Disclosed herein are a spectral sensing device and a method for measuring optical radiation. The optical radiation is provided by at least one measurement object and includes non-modulated optical radiation. The spectral sensing device includes
at least one radiation emitting element;
at least one photosensitive detector; and
at least one evaluation unit.
Disclosed herein are a spectral sensing device and a method for measuring optical radiation. The optical radiation is provided by at least one measurement object and includes non-modulated optical radiation. The spectral sensing device includes
at least one radiation emitting element;
at least one photosensitive detector; and
at least one evaluation unit.
The spectral sensing device is arranged in a manner such that modulated optical radiation is guided within the spectral sensing device towards at least one photosensitive detector.
Disclosed herein are a spectral sensing device and a method for measuring optical radiation. The optical radiation is provided by at least one measurement object and includes non-modulated optical radiation. The spectral sensing device includes
at least one radiation emitting element;
at least one photosensitive detector; and
at least one evaluation unit.
The spectral sensing device is arranged in a manner such that modulated optical radiation is guided within the spectral sensing device towards at least one photosensitive detector.
The spectral sensing device and a method for measuring optical radiation are configured to perform, preferably in a fully automatized fashion, a self-calibration of the spectral sensing device without requiring any predefined reflection target.
G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
(a) receiving an image set including at least two reflection images generated at different points in time and an indication of at least one interval between at least two different points in time, where a reflection image is generated while the living organism is illuminated by patterned coherent electromagnetic radiation and includes a pattern with at least one pattern feature, and, where the reflection image shows at least one pattern feature formed by illuminating at least a part of the living organism by the patterned coherent electromagnetic radiation;
(a) receiving an image set including at least two reflection images generated at different points in time and an indication of at least one interval between at least two different points in time, where a reflection image is generated while the living organism is illuminated by patterned coherent electromagnetic radiation and includes a pattern with at least one pattern feature, and, where the reflection image shows at least one pattern feature formed by illuminating at least a part of the living organism by the patterned coherent electromagnetic radiation;
(b) determining a feature contrast of the at least two pattern features;
(a) receiving an image set including at least two reflection images generated at different points in time and an indication of at least one interval between at least two different points in time, where a reflection image is generated while the living organism is illuminated by patterned coherent electromagnetic radiation and includes a pattern with at least one pattern feature, and, where the reflection image shows at least one pattern feature formed by illuminating at least a part of the living organism by the patterned coherent electromagnetic radiation;
(b) determining a feature contrast of the at least two pattern features;
(c) determining a condition measure of the living organism based on the feature contrast and the indication of the at least one interval; and
(a) receiving an image set including at least two reflection images generated at different points in time and an indication of at least one interval between at least two different points in time, where a reflection image is generated while the living organism is illuminated by patterned coherent electromagnetic radiation and includes a pattern with at least one pattern feature, and, where the reflection image shows at least one pattern feature formed by illuminating at least a part of the living organism by the patterned coherent electromagnetic radiation;
(b) determining a feature contrast of the at least two pattern features;
(c) determining a condition measure of the living organism based on the feature contrast and the indication of the at least one interval; and
(d) outputting the condition measure.
The invention is in the field of generation of chemometric models for spectrometers. It relates to a computer- implemented method for generating a chemometric model for a spectrometer comprising: a) receiving spectra of an object and object data associated with a physical or chemical characteristic of the object, b) augmenting the provided spectra and the associated object data, c) generating at least two different candidate chemometric models comprising d) training the candidate chemometric models using the augmented spectra and the object data, e) determining the prediction accuracy of the trained candidate chemometric models, f) selecting a chemometric model of the trained candidate chemometric models using the prediction accuracy and g) outputting the selected chemometric model.
G16C 20/70 - Machine learning, data mining or chemometrics
G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions
G16C 20/30 - Prediction of properties of chemical compounds, compositions or mixtures
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
The invention is in the field of generation of chemometric models for spectrometers. It relates to a computer-implemented method for generating a chemometric model for a spectrometer comprising: a) receiving spectra of an object and object data associated with a physical or chemical characteristic of the object, b) generating at least two different candidate chemometric models comprising i) a pre-processing method, ii) a machine learning method, iii) a feature selection filter, c) training the candidate chemometric models, d) determining the prediction accuracy of the trained candidate chemometric models, e) selecting the trained candidate chemometric model with the highest prediction accuracy and f) outputting the selected trained chemometric model.
G16C 20/70 - Machine learning, data mining or chemometrics
G16C 20/20 - Identification of molecular entities, parts thereof or of chemical compositions
G16C 20/30 - Prediction of properties of chemical compounds, compositions or mixtures
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
Disclosed herein is a method for determining at least one compensated detector signal for at least one photodetector. The at least one photodetector includes at least one detector element configured for generating at least one detector signal depending on an illumination of the at least one detector element. The method includes the following steps:
a) determining at least one dark detector resistance by using the at least one detector element and inhibiting illumination of the at least one detector element;
b) generating at least one bright detector signal by using the at least one detector element and allowing illumination of the at least one detector element; and
determining at least one compensated detector signal for compensating at least one temperature drift of the at least one detector element by using at least one evaluation unit.
Disclosed herein is a method for determining at least one compensated detector signal for at least one photodetector. The at least one photodetector includes at least one detector element configured for generating at least one detector signal depending on an illumination of the at least one detector element. The method includes the following steps:
a) determining at least one dark detector resistance by using the at least one detector element and inhibiting illumination of the at least one detector element;
b) generating at least one bright detector signal by using the at least one detector element and allowing illumination of the at least one detector element; and
determining at least one compensated detector signal for compensating at least one temperature drift of the at least one detector element by using at least one evaluation unit.
Also disclosed herein are a method for determining at least one item of measurement information on at least one measurement object by using at least one photodetector, a photodetector and a spectrometer.
G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
6.
CALIBRATION TRIGGER OF SMARTPHONE SPECTROMETER MODULE USING SENSOR FUSION
The present invention relates to a method for deriving at least one item of correction information, wherein the method comprises the following steps: a) receiving at least one item of sensor information provided by at least one external providing sensor (170) comprised by an external device (168) by using a connection interface (166) of the spectrometer device (162); b) comparing the item of sensor information to at least one predetermined condition for starting a correction procedure in order to update an item of correction information on the spectrometer device (162) for the spectrometer device (162) by using at least one evaluation unit.
Described herein is a method of fabricating at least one optical element, specifically at least one optical element for a spectrometer device. The method includes: i. at least one preparation step, where the preparation step includes providing at least one substrate having at least one first surface and at least one second surface, where the second surface is located opposite with respect to the first surface; ii. at least one deposition step, where the deposition step includes applying at least one first layer to the first surface of the substrate, where the first layer includes at least one of an optical filter and an anti-reflection coating and iii. at least one molding step, where the molding step includes molding at least one optical lens onto the first layer. Also described herein is a system for fabricating at least one optical element.
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/02 - Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29L 11/00 - Optical elements, e.g. lenses, prisms
CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS (CSIC) (Spain)
UNIVERSITAT AUTONOMA DE BARCELONA (Spain)
Inventor
Gould, Darren
Serra Graells, Francesc
Suanes, Alejandro
Abstract
Disclosed herein is a readout-circuit. The readout-circuit is configured for converting an analog sensor charge into a digital output count. The readout-circuit includes at least one integrate-and-fire(IAF)-circuit. The IAF-circuit is configured for converting the analog sensor charge into a first digital output count. An analog voltage remainder after a final IAF cycle is further processed. The readout-circuit includes at least one analog-to-digital-converter (ADC). The ADC is configured for converting the analog voltage remainder into a second digital output. Further, disclosed herein are a photodetector and a method for readout of an analog sensor charge.
Disclosed herein is a method of calibrating a spectral sensing device. The spectral sensing device includes:
a. at least one detector element;
b. at least one wavelength-selective element;
c. at least one light source:
d. at least one sample interface;
e. at least one first optical path; and
f. at least one second optical path.
Disclosed herein is a method of calibrating a spectral sensing device. The spectral sensing device includes:
a. at least one detector element;
b. at least one wavelength-selective element;
c. at least one light source:
d. at least one sample interface;
e. at least one first optical path; and
f. at least one second optical path.
The method includes:
I. illuminating the detector element via the at least one first optical path;
II. illuminating the detector element via the at least one second optical path with no sample applied to the sample interface;
III. illuminating the detector element via the at least one second optical path with at least one calibration sample applied to the sample interface; and
IV. determining at least one item of calibration information by using the first detector signal, the open port detector signal and the calibration detector signal.
Disclosed herein is a method of calibrating a spectral sensing device. The spectral sensing device includes:
a. at least one detector element;
b. at least one wavelength-selective element;
c. at least one light source:
d. at least one sample interface;
e. at least one first optical path; and
f. at least one second optical path.
The method includes:
I. illuminating the detector element via the at least one first optical path;
II. illuminating the detector element via the at least one second optical path with no sample applied to the sample interface;
III. illuminating the detector element via the at least one second optical path with at least one calibration sample applied to the sample interface; and
IV. determining at least one item of calibration information by using the first detector signal, the open port detector signal and the calibration detector signal.
Further disclosed herein are a method of determining at least one calibrated optical property of at least one sample, a spectral sensing device and computer programs and computer-readable storage media for performing the methods.
Described herein is a method for beam profile analysis using at least one camera. The method includes:
a) at least one data acquisition step;
b) at least one image compression step; and
c) at least one evaluation step.
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
H04N 19/184 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
11.
RECALIBRATION OF TEMPERATURE DEPENDENT CALIBRATION FACTORS USING TEMPERATURE SLOPES
The present invention relates to a method for calibrating a spectrometer device (128) for obtaining an item of calibration information on the spectrometer device (128), the method comprising the following steps: a) obtaining at least one item of temperature variation information on at least one component of the spectrometer device (128) by monitoring the temperature of the at least one component of the spectrometer device (128) by using at least one temperature sensor (132) of the spectrometer device (128); b) generating at least one item of measurement information on the spectrometer during a change of the temperature of the at least one component of the spectrometer device (128) by using a measuring unit (134) of the spectrometer device (128), wherein the change of the temperature is determined by evaluating the item of temperature variation information by using an evaluation unit (136) of the spectrometer device (128), wherein the at least one item of measurement information is obtained in a temperature resolved manner, wherein the at least one item of measurement information is a measurement value generated in a measurement process; C) obtaining at least one item of calibration information on the spectrometer device (128) by evaluating the item of measurement information on the spectrometer by further using the evaluation unit (136) of the spectrometer device (128), wherein, for obtaining the at least one item of calibration information on the spectrometer device (128), at least one deviation between an item of reference information on a known reference value and the at least one item of measurement information is determined, wherein generating the item of measurement information is started when any predetermined condition is met, wherein a fourth predetermined condition is that an external device (156) comprising the spectrometer device (128) is in a stand-by mode.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
The present invention relates to a measurement device (110) for a spectrometer device (112), wherein the measurement device (110) comprises: (1) at least one object holder (114); wherein the object holder (114) is configured for receiving an object (118); (2) at least one mounting unit (116); wherein the mounting unit (116) is configured for accommodating the spectrometer device (112); wherein the measurement device (110) is configured for aligning at least one measurement position (120, 121) on the object (118) relative to a measurement spot (124) of the spectrometer device (112) for obtaining at least one item of spectral information at the measurement position (120, 121).
Disclosed herein is a method of obtaining at least one item of object information on at least one object by spectroscopic measurement. The method includes the following steps:
i. acquiring spectroscopic data by using at least one spectrometer device;
ii. acquiring, by using at least one imaging device image data of a scene within a field of view of the imaging device, the scene including at least a part of the object and at least a part of the spatial measurement range of the spectrometer device; and
iii. evaluating the spectroscopic data of step i. and at least one item of image information derived from the image data of step ii., for obtaining the at least one item of object information on the at least one object.
G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
G01N 21/17 - Systems in which incident light is modified in accordance with the properties of the material investigated
G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solidsPreparation of samples therefor
G01N 21/84 - Systems specially adapted for particular applications
Disclosed herein is an in-use calibration method for a spectrometer device. The method includes:
providing the at least one spectrometer device including at least one optical measurement element and at least one optical calibration element having different optical properties;
providing at least one sample;
performing at least two measurements using the spectrometer device;
generating by the at least one detector at least one first detector signal S_d1 according to the measurement without the sample and at least one second detector signal S_d2 according to the measurement with the sample; and
deriving at least one calibrated optical property of the at least one sample from the first detector signal S_d1 and the second detector signal S_d2.
Disclosed herein is an in-use calibration method for a spectrometer device. The method includes:
providing the at least one spectrometer device including at least one optical measurement element and at least one optical calibration element having different optical properties;
providing at least one sample;
performing at least two measurements using the spectrometer device;
generating by the at least one detector at least one first detector signal S_d1 according to the measurement without the sample and at least one second detector signal S_d2 according to the measurement with the sample; and
deriving at least one calibrated optical property of the at least one sample from the first detector signal S_d1 and the second detector signal S_d2.
Further disclosed herein are a spectrometer device configured for performing an in-use calibration method and various uses thereof.
SPECTROMETER DEVICE FOR OBTAINING SPECTROSCOPIC INFORMATION ON AT LEAST ONE OBJECT WHEREIN THE IMAGING PLANE OF THE IMAGING SYSTEM IS POSITIONED AT A DISTANCE FROM THE ILLUMINATION PLANE
A spectrometer device (130) and a method for obtaining spectroscopic information on at least one object (110) are disclosed. The spectrometer device (130) comprises: - at least one light emitting element (132) configured for emitting illumination light (134) for illuminating the at least one object (110) in at least one illumination plane (136); - at least one imaging system (140), the imaging system (140) comprising at least one detector (142) configured for detecting detection light (144) from the object (110) and for generating at least one detector signal upon detecting the detection light (144), wherein the imaging system (140) further comprises at least one optical element (148) for guiding the detection light (144) onto the detector (142), wherein the imaging system (140) is configured for receiving the detection light (144) from at least one imaging plane; - at least one sample interface (160) configured for allowing the illumination light (134) to illuminate the object (110) and configured for allowing the detection light (144) from the object (110) to propagate to the imaging system (140), wherein the sample interface (160) is configured for defining a measurement pose of the spectrometer device (130) with respect to the object (110); wherein the imaging plane of the imaging system (140) is positioned at a distance from the illumination plane (136).
The present invention relates to a spectrometer device (130) for obtaining at least one item of spectral information on at least one object (110) by spectral measurement, wherein the spectrometer device (130) comprises: (1) at least one sample interface (132), wherein the sample interface (132) is configured for defining a measurement pose of the object (110), particularly during the spectral measurement, wherein the measurement surface further defines an x-y- plane and, thereby, defines an x-axis and a y-axis; (2) at least one light emitting element (138), wherein the light emitting element (138) is configured for emitting illumination light (140) onto the at least one object (110) in order to generate detection light (142) from the at least one object (110); (3) at least one detector (144), wherein the detector (144) comprises a plurality of photosensitive elements (164), wherein each of the photosensitive elements (164) is configured for generating at least one detector (144) signal when receiving the detection light (142) from the object (110) in order to obtain the item of spectral information; wherein the spectrometer device (130) is configured in a manner that received detection light (142) of at least two photosensitive elements (164) of the plurality of photosensitive elements (164) each show an angular distribution θicxyy) on the sample interface, wherein the at least two angular distributions θicxyy) of the at least two photosensitive elements (164) at least partially overlap.
A spectrometer device (130) and a method for obtaining spectroscopic information on at least one object (110) are disclosed. The spectrometer device (130) comprises: - at least one light emitting element (132) configured for emitting illumination light (134) for illuminating the at least one object (110) with at least two object illumination spots (188), specifically with at least two disjoint object illumination spots, in at least one object illumination plane (136), wherein each object illumination spot (188) has a centroid (190), wherein the centroids (190) of the object illumination spots (188) define an object illumination line (192); - at least one imaging system (140), the imaging system (140) comprising at least one detector (142) configured for detecting detection light (144) from the object (110) and for generating at least one detector signal upon detecting the detection light (144), wherein the imaging system (140) further comprises at least one optical element (148) for guiding the detection light (144) onto the detector (142), wherein the imaging system (140) is configured for receiving the detection light (144) from at least one imaging plane, wherein the imaging system (140) is configured for receiving the detection light (144) from at least one elliptic light collection profile (196) in the imaging plane, wherein a major axis (194) of the elliptic light collection profile (196) is non-parallel to the object illumination line (192); and - at least one sample interface (160) configured for allowing the illumination light (134) to illuminate the object (110) and configured for allowing the detection light (144) from the object (110) to propagate to the imaging system (140), wherein the sample interface (160) is configured for defining a measurement pose of the spectrometer device (130) with respect to the object (110).
Disclosed herein is a spectrometer device for analyzing a sample. The spectrometer device includes at least one light emitting element; and at least one reference light emitting element. Further, the spectrometer device includes at least one interface element, at least one segmented aperture, and at least one optical separation element. Further, the spectrometer device includes at least one detector array including a plurality of detector elements.
Disclosed herein is a spectrometer device for analyzing a sample. The spectrometer device includes at least one light emitting element; and at least one reference light emitting element. Further, the spectrometer device includes at least one interface element, at least one segmented aperture, and at least one optical separation element. Further, the spectrometer device includes at least one detector array including a plurality of detector elements.
Further disclosed herein are a spectrometer system, a method for determining at least one information related to a spectrum of a sample with the spectrometer device and various uses of a spectrometer system.
A method for evaluating degradation of a photodetector (112), the photodetector (112) comprising at least one photosensitive element (116), the photodetector (112) being configured for generating at least one detector current depending on an illumination of the photosensitive element (116) by light, the photodetector (112) further comprising at least one evaluation unit (120) for evaluating the detector current, wherein method comprises: a) determining at least one detector current; b) evaluating the detector current with respect to at least one reference value to obtain at least one relative detector current value; and c) deriving at least one item of degradation information on the photosensitive element (116) using the relative detector current value, the item of degradation information describing the degradation of performance due to temperature hysteresis behavior, aging, excessive temperatures and/or excessive illumination.
Disclosed herein is a method for controlling a display device including: a) receiving (S1) a process request for executing a process including at least one step executable by the display device; b) determining (S2) user-related and/or process-related information based on the received process request; c) generating (S3) a display control signal based on the user-related and/or process-related information, where the display control signal is suitable for controlling the functioning of at least one pixel of a display unit of the display device; and d) providing (S4) the generated display control signal.
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G09G 3/20 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
The present invention relates to a method for obtaining at least one item of object condition information on an object (147), the method comprising: i. acquiring image data of the object (147) by using at least one image generation unit (134); ii. evaluating the image data for obtaining at least one item of information on a local characteristic of the object (147); and evaluating the at least one item of information on the local characteristic of the object (147) for obtaining one or more measurement positions on the object (147); iii. acquiring at least one item of spectral information on the object (147) at the one or more measurement positions by using a spectrometer device (138); and iv. evaluating the item of spectral information for obtaining the at least one item of object condition information on the at least one object (147), wherein evaluating the item of spectral information for obtaining the at least one item of object condition information on the at least one object (147) further comprises evaluating the image data for obtaining the at least one item of object (147) condition information.
Disclosed herein is a method for alignment of optical components of a projector for illuminating at least one object with at least one illumination pattern including a plurality of illumination features. The projector includes at least one array of emitters. Each of the emitters is configured for generating at least one light beam. The projector includes at least one transfer device configured for generating the illumination features from the light beams impinging on the transfer device.
G03B 21/14 - Projectors or projection-type viewersAccessories therefor Details
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
Disclosed herein is a method for training a data-driven model for determining a user-selected parameter value related to the condition of a human including:
(a) receiving an image of a body part of the human while the body part is illuminated by a light pattern containing at least one pattern feature,
(b) determining skin pattern features from the image, where a skin pattern feature is a pattern feature which has been reflected by skin,
(c) receiving from a user interface a user-selected parameter value related to the condition of the human, and
(d) training a data-driven model with a training dataset comprising the skin pattern features and the user-selected parameter value.
Disclosed herein is a method for determining an access right of a user to a requesting computer device, the method including, by an authenticating computer device:
receiving (S1) a detector signal containing captured biometric information about the user from the requesting computer device,
authenticating (S2) the user based on the detector signal,
determining (S3) an access right information of the user based on the authentication and based on a prestored access right information indicating user rights associated with one or multiple users, the access right information indicating an extent to which the user is allowed to access the requesting computer device, and
transmitting (S4) the access right information of the user to the requesting computer device.
The invention is in the area of generation of datasets for biometric recognition. It relates to a computer-implemented method for generating datasets for training a biometric recognition system comprising a. receiving context information associated with hardware components of the biometric capture device, b. generating a dataset for training a biometric recognition system by providing the context information to a generative model which is configured to receive context information as input and output a dataset for training a biometric recognition system based on the context information, and c. outputting the dataset.
Disclosed herein is a method for characterizing material properties of an object, where the object has a form and including at least one material, the method includes receiving imaging data associated to the object, determining, by processing the received imaging data, at least one reflection feature corresponding to a spot in the first image: comparing, by processing the at least one reflection feature, the spot pattern comprised in the first image with reference spot patterns for obtaining a comparison result; and determining a material property of the object as a function of the comparison result. Further disclosed herein is a device with data processing capabilities and for implementing the method.
G06V 10/44 - Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersectionsConnectivity analysis, e.g. of connected components
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
skimminginitialskimming,jactual,kactual,k of at least one further pixel k (132) of the plurality of pixels (122) with k ≠ j; c) comparing the initial signal value of the further pixel k (132) and the actual signal value of the further pixel k (132), by using at least one processor (134), wherein the further pixel k (132) is detected as out-of-line pixel (116) in case the initial signal value and the actual signal value differ by more than at least one predefined tolerance.
Disclosed herein is a system for identifying a subject interacting with a display device, where the system includes i) an image providing unit for providing a first image showing a first body part of the subject and a second image showing a second body part of the subject, where the first and the second image have been acquired by imaging the first and second body part, respectively, through a display of the display device, ii) a combined similarity determining unit for determining a combined degree of similarity of a) the first and the second image to b) a first and a second reference image corresponding to a reference subject identity, and iii) a subject identity determining unit for determining whether an identity of the subject corresponds to the reference subject identity based on the combined degree of similarity.
Disclosed herein is a method for authenticating an object. A pattern image is received showing the object while it is illuminated with a light pattern including one or more pattern features. From the pattern image pattern features located on the object are selected based on information indicating the position and extend of the object in the pattern image, several cropped pattern images are generated by cropping the pattern image based on the selected pattern features, where a cropped pattern image has a predetermined size and contains at least a part of one of the selected pattern features. The object is the authenticated by providing the cropped pattern images to a machine learning based identification model which has been trained such that it can authenticate an object based on the cropped pattern images as input. The authentication of the object is then outputted.
Disclosed herein is a method for extracting material information of an object from a pattern image of the object. The pattern image showing the object while the object is illuminated with a light pattern is received. The pattern image is manipulated to generate a partial image from the pattern image. Material information of the object is extracted from the partial image by providing the partial image to a data-driven model. The data-driven model is parametrized according to a training data set including partial images and material information. The extracted material information is provided.
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
G06V 10/762 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using clustering, e.g. of similar faces in social networks
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
32.
FACE AUTHENTICATION INCLUDING MATERIAL DATA EXTRACTED FROM IMAGE
Disclosed herein is a method for authorizing an object of a device to perform at least one operation on the device that requires authentication, including the steps:
receiving, from a user interface associated with a device, an unlock request for the device from a user;
in response to receiving the unlock request, triggering illumination of the object with patterned infrared illumination;
triggering to capture at least one image of the object using a camera located on the device while the object is being illuminated with the patterned infrared illumination;
extracting material data from at least one image; and
allowing or declining the object to perform at least one operation on the device that requires authentication based on the material data.
Disclosed herein is a system for identifying a display device, where the system includes i) an image providing unit for providing an image of an object that has been acquired by projecting an illumination pattern through a display of the display device onto the object and imaging the illuminated object through the display. The system further includes ii) a reflection pattern extracting unit for extracting a reflection pattern corresponding to the illumination pattern from the image, and iii) an identity determining unit for determining an identity of the display device based on the reflection pattern.
G06V 40/40 - Spoof detection, e.g. liveness detection
G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
34.
SYSTEM AND METHOD FOR DETERMINING A MATERIAL OF AN OBJECT
Disclosed herein is a system for determining a material of an object. The system includes an image providing unit, a material score determination unit, a material determination unit and an output unit. The image providing unit is configured for providing at least two images, each showing a part of the object. The material score determination unit is configured for determining a material score for each of the at least two images, the material score being indicative of a presence of a predefined material in the respective image. The evaluation unit is configured for evaluating the material scores determined for each of the at least two images. This material determination unit is configured for determining the material of the object based on the evaluation. The output unit is configured for outputting the determined material of the object.
Described herein is an optical sensor, a detector including the optical sensor for an optical detection of at least one object, a method for manufacturing the optical sensor and various uses of the optical detector.
Described herein is an optical sensor, a detector including the optical sensor for an optical detection of at least one object, a method for manufacturing the optical sensor and various uses of the optical detector.
The optical sensor can, be supplied as a non-bulky hermetic package which provides an increased degree of protection against possible degradation by humidity and/or oxygen over long terms. Further, the optical sensor may be easily manufactured and integrated on a circuit carrier device.
Disclosed herein is a method for detecting a vital sign, the method including the steps of a) generating or receiving an image data set representing at least one reflection image of a speckle pattern produced by coherent electromagnetic radiation reflected from an object, b) determining a speckle contrast of the speckle pattern, c) determining a vital sign measure based on the determined speckle contrast, and d) providing the vital sign measure.
G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
The present invention relates to an optical element (110), wherein the optical element (110) comprises: (1) at least one first Vertical-Cavity Surface-Emitting Laser (112), wherein the first Vertical-Cavity Surface-Emitting Laser (112) comprises an active area situated on a bottom surface of the first Vertical-Cavity Surface-Emitting Laser (112); (2) at least one second Vertical-Cavity Surface-Emitting Laser (118), wherein the second Vertical-Cavity Surface-Emitting Laser (118) comprises an active area situated on a top surface of the second Vertical-Cavity Surface-Emitting Laser (118), wherein the top surface is opposite of a bottom surface of the second Vertical-Cavity Surface-Emitting Laser (118); (3) at least one supporting member (126); wherein the first Vertical-Cavity Surface-Emitting Laser (112) is arranged with the bottom surface on the supporting member (126); and wherein the second Vertical-Cavity Surface-Emitting Laser (118) is arranged with the bottom surface on the supporting member (126).
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
The invention is in the area of biometric recognition. It relates to a biometric recognition system for recognizing a user from its hand comprising: a. projector for projecting light onto the hand of the user, b. a camera for recording an image of the hand, and c. a processor configured to i. extract features of the hand of the user for comparing them to reference features, ii. determine from the image if the hand is made of skin, and iii. generating a recognition signal based on the feature comparison and the skin determination.
A method for measuring blood perfusion of an object, the method comprising: receiving an image generated while the object is illuminated by coherent infrared light, generating a plurality of partial images based on the image, providing the plurality of partial images to a data-driven model based on a location of the plurality of partial images within the image for determining a material property measure, wherein the data-driven model is trained based on historical partial images provided to the data-driven model based on a location of the historical partial images and corresponding material property measures, providing the material property measure.
A method for authenticating an authorized user, the method comprising: receiving a request to access a resource, in response to receiving the request to access the resource triggering to illuminate the object by light, and triggering to generate an image of the object while the object is being illuminated by the light, receiving a template image of the authorized user, providing the image and the template image to a data-driven model for determining if the object associated with the image corresponds to the authorized user, wherein the data-driven model is trained with a plurality of training images obtained by generating a plurality of synthetic representations of a human generated from a representation of the human and augmenting the plurality of synthetic representations of a human to generate a plurality of training images, allowing the authorized user to access a resource in response determining that the object corresponds to the authorized user.
G06F 18/214 - Generating training patternsBootstrap methods, e.g. bagging or boosting
G06F 18/2413 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on distances to training or reference patterns
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
41.
OPTICAL ELEMENTS ON FLOOD VCSELS FOR 2IN1 PROJECTORS
An optoelectronic apparatus (112) is proposed which is configured for emitting at least one infrared light pattern comprising a plurality of infrared light beams and for emitting infrared flood light, comprising: - a light emitter structure (114) comprising a plurality of light emitters (116), wherein a first array (118) of light emitters (116) of the plurality of light emitters (116) forms a pattern illumination source (120) configured for emitting the infrared light pattern, wherein a second array (122) of light emitters (116) of the plurality of light emitters (116), different from the light emitters (116) of the first array (118), forms a flood illumination source (124) configured for emitting the infrared flood light; - a base (125) providing a single plane for mounting the light emitters (116); - at least one system of optical elements (126) comprising a plurality of optical elements, wherein the system of optical elements (126) is configured for focusing the emitted infrared light pattern onto a focal plane, wherein the system of optical elements (126) covers the light emitter structure (114); - at least one flood light optical element (130) configured for defocusing light emitted by the light emitters (116) of the flood illumination source (124) thereby forming overlapping light spots, wherein the flood light optical element (130) is configured for leaving the emitted infrared light pattern uninfluenced.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
42.
FACE AUTHENTICATION INCLUDING OCCLUSION DETECTION BASED ON MATERIAL DATA EXTRACTED FROM AN IMAGE
Disclosed herein is a method for authorizing a user of a device to perform at least one operation on the device that requires authentication, including receiving, in response to receiving the unlock request, at least one image of the user using a camera located on the device while the user is being illuminated with the flood infrared illumination and/or the patterned infrared illumination; generating infrared pattern image data for the region of interest from the at least one image; extracting material data from the infrared pattern image data and determining at least one occlusion from material data; and allowing or declining the user to perform at least one operation on the device that requires authentication based on the material data and/or the determined occlusion.
An optoelectronic apparatus (112) is proposed configured for emitting at least one infrared light pattern (124) comprising a plurality of infrared light beams and for emitting infrared flood light (128), comprising: - a base (114) providing at least four platforms (116) of alternating heights with respect to the base (114), wherein the heights of the platforms (116) alternate between a first height and a second height, different from the first height; - a light emitter structure (118) comprising a plurality of light emitters (120), wherein at least one light emitter (120) is mounted on each platform (116), wherein the light emitters (120) mounted on platforms (116) of the first height form a pattern illumination source (122) configured for emitting the infrared light pattern (124), wherein the light emitters mounted on platforms (116) of the second height form a flood illumination source (126) configured for emitting the infrared flood light (128).
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
The invention is in the field of portable spectrometer devices. It relates to a spectrometer comprising a. an interface to an application, wherein the interface is configured to receive a request for performing a spectroscopic measurement and to provide spectroscopic measurement results to the application, b. a spectrometer module which is configured to receive electromagnetic radiation and generate spectroscopic data comprising intensity values, wherein each intensity value is indicative of the intensity of the electromagnetic radiation in at least a part of its spectral range, and c. a processor which is configured to trigger the spectrometer module to execute a spectroscopic measurement in response to a request received through the interface and to receive spectroscopic data from the spectrometer module, wherein the processor is further configured to derive composition data from the spectroscopic data and to provide the spectroscopic data and the composition data to the interface.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
45.
SKIN ROUGHNESS AS SECURITY FEATURE FOR FACE UNLOCK
A computer-implemented method for authenticating a user (114) of a device (102) is proposed. The method comprising: a. (302) receiving a request for accessing one or more functions associated with the device (102); b. executing at least one authentication process comprising the following steps: b.1 (304) triggering to illuminate the user (114) by coherent electromagnetic radiation associated with a wavelength between 850 nm and 1400 nm, b.2 (306) triggering to generate at least one speckle image of the user (114) while the user is being illuminated by the coherent electromagnetic radiation, b.3 (308) determining at least one surface roughness measure based on the speckle image, b.4 (310) authenticating the user (114) or denial using the surface roughness measure.
The invention is in the field of portable spectrometer devices. It relates to a spectrometer comprising a. an interface to an application, wherein the interface is configured to receive a request for performing a spectroscopic measurement and to provide spectroscopic measurement results to the application, b. a spectrometer module which is configured to receive electromagnetic radiation and generate spectroscopic data comprising intensity values, wherein each intensity value is indicative of the intensity of the electromagnetic radiation in at least a part of its spectral range, and c. a processor which is configured to trigger the spectrometer module to execute a spectroscopic measurement in response to a request received through the interface and to receive spectroscopic data from the spectrometer module, wherein the processor is further configured to derive composition data from the spectroscopic data and to provide the spectroscopic data and the composition data to the interface.
Described herein is a method of manufacturing at least one spectrometer device for evaluating electromagnetic radiation. The method includes: a) providing at least one electro-optical system configured for generating at least one electronic signal according to the electromagnetic radiation; b) providing at least one readout integrated circuit (ROIC) for processing the at least one electronic signal; c) providing at least one circuit carrier; d) arranging the electro-optical system on the ROIC; e) bonding the electro-optical system and the ROIC to establish at least one electrical connection between the electro-optical system and the ROIC; and f) arranging the ROIC on the circuit carrier, such that the ROIC is located between the electro-optical system and the circuit carrier. Also described herein is a spectrometer device for evaluating electromagnetic radiation.
A device (110) for authenticating a user (112) is proposed. The device (110) comprising: - at least one projector (116) configured for projecting a plurality of light beams through at least one display (118) onto the user (112), - at least one image generation unit (122) configured for generating a pattern image showing the projecting of the plurality of light beams onto the user (112); - at least one processor (124) configured for extracting liveness data from the pattern image and allowing the user (112) to perform an operation on the device (110) that requires authentication based on the liveness data; - at least one control unit (126) and at least one status inquiry device (128) configured for retrieving at least one item of status information on a current environmental status of the device (110), wherein the control unit (126) is configured for automatically triggering at least one calibration depending on the fulfillment of at least one predetermined environmental status condition.
The invention relates to the field of biometric authentication, in particular to the field of anti-spoofing. The disclosure relates to methods, apparatuses, devices, material information and computer elements for authorizing a user of a device to perform at least one operation that requires authentication.
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/28 - Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/40 - Spoof detection, e.g. liveness detection
The invention relates to the field of biometric authentication, in particular to the field of anti-spoofing. The disclosure relates to methods, apparatuses, devices, material information and computer elements for authorizing a user of a device to perform at least one operation that requires authentication.
It relates to a method (110) for verifying at least one attribute of a virtual character in a virtual environment associated with a user, the method (110) comprising: -receiving a request (112) to verify at least one attribute of the virtual character, -receiving at least one pattern image (114) showing the user associated with the virtual character while the user is being illuminated by patterned infrared illumination, -determining if the user corresponds to a living human (116) based on the at least one pattern image, -providing an indication (118) on that the at least one attribute of the virtual character is verified based on the determining if the user corresponds to a living human based on the at least one pattern image.
Disclosed herein is a portable spectrometer device for acquiring at least one item of spectral information. The portable spectrometer device includes at least one spectrometer unit. The spectrometer unit includes at least one wavelength-selective element configured for separating incident light into a spectrum of constituent wave-lengths and at least one detector device configured for detecting at least a portion of the constituent wavelengths. The portable spectrometer device further includes at least one control unit and at least one status inquiry device configured for retrieving at least one item of status information on a current environmental status of the portable spectrometer device. The control unit is configured for automatically triggering at least one reference measurement with the detector device, depending on the fulfillment of at least one predetermined environmental status condition.
Disclosed herein is a field of biometric authentication, in particular the field of anti-spoofing. Further disclosed herein are methods, apparatuses, devices, material information and computer elements for generating biometric authentication information.
The present invention relates to an optical element (110), wherein the optical element (110) comprises: (1) at least one lens element (112), wherein the lens element (112) comprises at least one optical lens (114); (2) at least one optoelectronic component (116), wherein the optoelectronic component (116) is configured for emitting and/or detecting light (126) through the optical lens (114); (3) at least one supporting member (118), wherein the optoelectronic component (116) is arranged between the lens element (112) and the supporting member (118); and (4) at least one electrical wire (120), wherein the electrical wire (120) is secured to the supporting member (118), wherein the electrical wire (120) secures the optical lens (114) to the optoelectronic component (116) in a manner that it breaks when the optical lens (114) dislocates from the optoelectronic component (116) so that at least a portion of the illumination light (126) emitted and/or detected by the optoelectronic component (116) avoids the optical lens (114).
F21V 5/04 - Refractors for light sources of lens shape
F21V 17/10 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
F21V 25/04 - Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
G01S 7/481 - Constructional features, e.g. arrangements of optical elements
G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
H01S 5/068 - Stabilisation of laser output parameters
H01S 5/183 - Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
The invention relates to the field of biometric authentication, in particular to the field of anti-spoofing. The disclosure relates to methods, apparatuses, devices, material information and computer elements for generating biometric authentication information.
Disclosed herein is a detector for determining at least one material property of at least one object. The detector includes
at least one projector configured for illuminating the object with at least one illumination pattern including a plurality of illumination features;
at least one first camera having at least one first sensor element;
at least one second camera having at least one second sensor element; and
at least one evaluation device configured for evaluating a first reflection image and the second reflection image.
Disclosed herein is a method for authenticating a user of a mobile device. The method includes:
a) imaging at least one first image of a face by using at least one camera of the mobile device;
b) providing the at least one first image to a regular execution environment of a processor of the mobile device and providing the at least one first image to a trusted execution environment of the processor;
c) analyzing the at least one first image using at least one trained model in the regular execution environment thereby determining a multi-dimensional vector comprising image information; and
d) a face verification step.
G06F 21/32 - User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
G06F 21/53 - Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems during program execution, e.g. stack integrity, buffer overflow or preventing unwanted data erasure by executing in a restricted environment, e.g. sandbox or secure virtual machine
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
58.
PHOTODETECTOR AND METHOD FOR CONVERTING ILLUMINATION CHARGES
A photodetector (112) is disclosed, comprising at least one photosensitive element (120) having a resistance depending on an illumination by light, wherein the photodetector (112) further comprises at least one readout circuit (124), the readout circuit (124) comprising: - at least one input circuit (126) configured for providing at least one bias voltage (128) to the photosensitive element (120), the bias voltage (128) being adaptable between at least one first voltage (130) in an illumination phase (132) and ground (134) in a dark phase (136); - at least one integrator circuit (142) for storing photoelectric charges generated by the photosensitive element (120), the integrator circuit (142) comprising at least one operational amplifier (144) and at least one capacitor (146), the photosensitive element (120) being connected to an inverting input (148) of the operational amplifier (144) and the capacitor (146) being connected to an output (150) of the operational amplifier (144), wherein the capacitor (146) is configured for storing dark current charges and illumination charges during the illumination phase (132), wherein the integrator circuit (142) is configured for reversing current flow of the dark current charges in the dark phase (136) thereby removing the dark current charges from the capacitor (146); - at least one trimmed voltage divider (152) connected to the input circuit (126) and to a non-inverting input (154) of the operational amplifier (144); and - at least one analog-to-digital converter (164) for converting the illumination charges stored in the integrator circuit (142) into one voltage value (182). Further disclosed is a system (110) comprising the photodetector (112), a method for converting illumination charges and a computer program and a computer-readable storage medium for performing the method.
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112) is disclosed, comprising at least one detector (114) for detecting light; at least one light source (118) configured for emitting light in at least one optical spectral range; at least one sample interface (120) configured for allowing the emitted light of the light source (118) to leave the spectrometer device (110) through the sample interface (120) and configured for allowing detection light to enter the spectrometer device (110) through the sample interface (120), wherein the sample interface (120) comprises at least one optical element configured for providing at least one internal calibration target; at least one optical path (122), wherein the optical path (122) is configured for allowing the emitted light of the light source (118) to propagate to the sample interface (120) and for allowing detection light to propagate to the detector (114), wherein the optical path (122) is further configured for allowing the emitted light of the light source (118) to propagate to the internal calibration target and for allowing reference emission to be directed by the internal calibration target to the detector (114). The spectrometer device (110) is configured for separating the reference emission and the detection light from each other by polarization multiplexing. The spectrometer device (110) is configured for I. (138) illuminating through the sample interface (120) with light having a first polarization via the at least one optical path (122) to obtain at least one first detector signal relating to the detection light; II. (140) illuminating the internal calibration target with light having a second polarization, different from the first polarization, via the optical path (122) to obtain at least one calibration signal relating to the reference emission; and III.(142) determining at least one item of calibration information by using the first detector signal and the calibration signal.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
A method for authenticating a user of a device (110) is disclosed. The method comprising: a. projecting (130) a plurality of light beams through a display (114) onto the user by a projector (112), wherein an emission angle of the projector (112) is below or equal to 60°, b. generating (132) a pattern image showing the projecting of the plurality of light beams onto the user, c. extracting (134) liveness data from the pattern image, d. allowing (136) the user to perform an operation on the device (110) that requires authentication based on the liveness data.
The invention relates to a spectrometer device (110) for determining an item of spectral information on at least one object (112), the spectrometer device (110) comprising: - at least one sample interface (130), wherein the sample interface (130) defines at least one component of a predetermined pose of the object (112) when the item of spectral information is determined; - at least one light emitting element (116), wherein the at least one light emitting element (116) is designated to emit illumination light (118) onto the object (112) for generating object light (119); - at least two photosensitive detectors (122) that generate at least two detector signals when receiving light, wherein the photosensitive detectors (122) are designated to receive at least a portion of the generated object light (119); - at least one evaluation unit (140), wherein the at least one evaluation unit (140) is configured to consider the detector signals of the at least two photosensitive detectors (122) for determining an item of placement information on the object (112).
A method for authenticating a user of a device comprising an illumination source, the method comprising: a) receiving a visible light image showing the object while the object is illuminated with visible light, b) receiving an IR pattern image showing the object while the object is illuminated with an infrared light pattern emitted from the illumination source, c) determining if a material indicator associated with the object shown in the IR pattern image corresponds to a living organism, in particular by providing the IR pattern image to an IR data-driven model parametrized based on an IR training data set comprising at least one training IR pattern image and at least one training material indicator, wherein the IR data-driven model provides a material indicator based on the IR pattern image, d) determining if the object shown in the visible light image corresponds to an authorized user, and, e1) allowing the object to access at least one function of the device based on determining that the object shown in the visible light image corresponds to an authorized user and determining that the material indicator corresponds to a living subject, or e2) declining the object to access at least one function of the device based on determining that the object shown in the visible light image corresponds to an unauthorized object and/or the material indicator corresponding to a non-living subject.
The invention relates to an optical unit (114) for a spectrometer device (112) for analyzing at least one sample (116). The optical unit (114) comprises a plurality of light emitting elements (120) configured for emitting light for illuminating the sample (116); a conical light guide (122) comprising at least one scattering element (124) arranged between opposing, differently sized openings (126) of the conical light guide (122), the conical light guide (122) being configured for scattering at least part of the light emitted by the light emitting elements (120); at least one reflector (128) configured for reflecting at least part of the light scattered by the light guide (122) in a direction toward the sample (116), wherein the light emitting elements (120) and the reflector (128) are arranged on a side of the conical light guide (122) having the bigger opening (130), wherein the sample (116) is placeable on a side of the conical light guide (122) having the smaller opening (132). Further disclosed are a spectrometer device (112), a spectrometer system (110) and various uses of the spectrometer device (112).
G01N 21/3563 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solidsPreparation of samples therefor
The invention relates to a method for generating an IR image by a detector (110), wherein the detector (110) comprises a first plurality of IR pixels (112, 118, 236) and at least one second plurality of IR pixels (112, 118, 238), wherein the IR pixels (112, 118) comprised by the detector (110) are arranged in a plurality of rows, wherein the first plurality of IR pixels (112, 118, 236) comprises at least one first row of IR pixels (237) of the plurality of rows, wherein the at least one second plurality of IR pixels (112, 118, 238) comprises at least one second row of IR pixels (239) of the plurality of rows, wherein a read out of the pixels (112, 118, 122) for determining the pixel values is performed sequentially by reading out the at least one first row and then reading out the at least one second row, the method comprising: - illuminating an object by IR light; - receiving detection light from the object generated by the illuminated IR light at the first plurality of I R pixels (112, 118, 236); - determining the pixel values of the first plurality of IR pixels (112, 118, 236) by reading out the at least one first row of IR pixels (237), wherein illuminating the object is stopped before reading out the at least one first row; - further illuminating the object by IR light; - receiving detection light from the object generated by the illuminated IR light at the second plurality of IR pixels (112, 118, 238); - determining the pixel values of the second plurality of IR pixels (112, 118, 238) by reading out the at least one second row of IR pixels (239), wherein further illuminating is stopped before reading out the at least one second row; - providing the IR image based on the pixel values of the first plurality of IR pixels (112, 118, 236) and the pixel values of the at least one second plurality of IR pixels (112, 118, 238).
H04N 25/131 - Arrangement of colour filter arrays [CFA]Filter mosaics characterised by the spectral characteristics of the filter elements including elements passing infrared wavelengths
H04N 23/11 - Cameras or camera modules comprising electronic image sensorsControl thereof for generating image signals from different wavelengths for generating image signals from visible and infrared light wavelengths
H04N 25/531 - Control of the integration time by controlling rolling shutters in CMOS SSIS
H04N 23/12 - Cameras or camera modules comprising electronic image sensorsControl thereof for generating image signals from different wavelengths with one sensor only
H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means
Disclosed herein is a method for calibrating a spectrometer device. The method includes the following steps:
a) illuminating at least one detector device of the spectrometer device with at least one broadband light source through at least one narrow band pass filter having a plurality of predetermined transmission bands;
b) generating, by using the detector device, a plurality of detector signals depending on the illumination of step a);
c) determining at least one item of wavelength calibration information, where the item of wavelength calibration information includes at least one assignment assigning wavelengths of incident light to corresponding photosensitive elements being responsive to these wavelengths; and
d) determining at least one item of stray light calibration information based on the plurality of detector signals.
Disclosed herein is a method for calibrating a spectrometer device. The method includes the following steps:
a) illuminating at least one detector device of the spectrometer device with at least one broadband light source through at least one narrow band pass filter having a plurality of predetermined transmission bands;
b) generating, by using the detector device, a plurality of detector signals depending on the illumination of step a);
c) determining at least one item of wavelength calibration information, where the item of wavelength calibration information includes at least one assignment assigning wavelengths of incident light to corresponding photosensitive elements being responsive to these wavelengths; and
d) determining at least one item of stray light calibration information based on the plurality of detector signals.
Further disclosed herein are a system for calibrating a spectrometer device, a computer program and a computer-readable storage medium.
A spectral sensing device (110) is disclosed, comprising - at least one first light source (112) configured for emitting light in at least one first optical spectral range and at least one second light source (114) configured for emitting light in at least one second optical spectral range; - at least one detector (122) comprising a plurality of sensor elements (124), wherein each of the sensor elements (124) is configured for generating at least one detector signal in response to an illumination of the sensor element (124) by incident light; - at least one sample interface (128) configured for allowing light emitted from the first light source (112) to illuminate at least one sample (130); - at least one first optical path (132) configured for allowing light emitted from the first light source (112) to propagate to the detector (122) by passing the sample interface (128) at least once; and - at least one second optical path (134) allowing light emitted from the second light source (114) to propagate to the detector (122) without passing the sample interface (128), wherein the second light source (114) is positioned to illuminate each of the sensor elements (124) with the entire second optical spectral range. Further disclosed are a method of determining at least one relative time-corrected detector signal of at least one sample (130), a computer program and a computer-readable storage medium for performing the method.
Disclosed herein is a method for calibrating at least one camera and at least one projector of a detector. The projector is configured for illuminating at least one object with at least one illumination pattern including a plurality of illumination features, where the camera has at least one sensor element having a matrix of optical sensors, the optical sensors each having a light-sensitive area, where each optical sensor is designed to generate at least one sensor signal in response to an illumination of its respective light-sensitive area by a light beam propagating from the object to the camera.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light
G06T 7/80 - Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
68.
STRUCTURED LIGHT PATTERN COMBINED WITH PROJECTION OF MARKERS
Disclosed herein is a projector for illuminating at least one object with at least one illumination pattern. The illumination pattern includes a plurality of illumination features, where the illumination pattern further includes at least one marker.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
A method for measuring a surface roughness associated with an object, the method comprising: a) receiving a speckle image showing an object while being illuminated by coherent electromagnetic radiation associated with a wavelength between 850 nm and 1400 nm, b) determining a surface roughness measure based on the Speckle image, c) providing the surface roughness measure.
A detector for material detection of at least one object is disclosed. The detector includes:
at least one projector for illuminating at least one object with at least one illumination pattern;
at least one flood light source configured for scene illumination;
at least one sensor element having a matrix of optical sensors,
and
at least one evaluation device.
G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
G01S 7/48 - Details of systems according to groups , , of systems according to group
G01S 7/481 - Constructional features, e.g. arrangements of optical elements
G01S 17/46 - Indirect determination of position data
G06V 10/143 - Sensing or illuminating at different wavelengths
G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/40 - Spoof detection, e.g. liveness detection
71.
MEASURING THE HUMAN SKIN AGE THROUGH NEAR-INFRARED SPECTROSCOPY
Disclosed herein is a computer-implemented method of optically determining an estimated age of a skin of a living being. The method includes:
i. using at least one sample reflection spectrum of at least one portion of the skin of the living being over a spectral measurement range, the spectral measurement range including at least one portion of the wavelength range of from 1 μm to 2.5 μm; and
ii. determining the estimated age of the skin of the living being by applying, to the sample reflection spectrum, at least one trained trainable model.
Disclosed herein is a computer-implemented method of optically determining an estimated age of a skin of a living being. The method includes:
i. using at least one sample reflection spectrum of at least one portion of the skin of the living being over a spectral measurement range, the spectral measurement range including at least one portion of the wavelength range of from 1 μm to 2.5 μm; and
ii. determining the estimated age of the skin of the living being by applying, to the sample reflection spectrum, at least one trained trainable model.
The trainable model is trained on a training dataset including a plurality of labeled reference reflection spectra. Each of the reference reflection spectra is acquired over a spectral range at least partially overlapping with the spectral measurement range of the sample reflection spectrum of step i.
Disclosed herein is a method of controlling operation of at least one light-emitting system including at least one light-emitting element. The method includes:
a) monitoring at least temporarily, at least one electrical parameter of the light-emitting element;
b) evaluating the electrical parameter and verifying if the electrical parameter meets at least one predetermined criterion; and
c) taking at least one safeguard action depending on the outcome of step b).
H05B 47/20 - Responsive to malfunctions or to light source lifeCircuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant for protection
Disclosed herein is a method for calibrating a spectrometer device. The spectrometer device includes at least one detector device including at least one optical element configured for separating incident light into a spectrum of constituent wavelength components and further includes a plurality of photosensitive elements. The method includes the following steps:
a) illuminating, by using at least one broadband light source, the spectrometer device through at least one optical interferometer;
b) determining for the plurality of photosensitive elements a plurality of detectors signals depending on the illumination through the optical interferometer in step a); and
c) determining at least one item of calibration information from the plurality of detector signals.
Disclosed herein is a method for calibrating a spectrometer device. The spectrometer device includes at least one detector device including at least one optical element configured for separating incident light into a spectrum of constituent wavelength components and further includes a plurality of photosensitive elements. The method includes the following steps:
a) illuminating, by using at least one broadband light source, the spectrometer device through at least one optical interferometer;
b) determining for the plurality of photosensitive elements a plurality of detectors signals depending on the illumination through the optical interferometer in step a); and
c) determining at least one item of calibration information from the plurality of detector signals.
Further disclosed herein are a system for calibrating a spectrometer device, a computer program and a computer-readable storage medium for performing the method.
Disclosed herein is a method for authenticating a user for access involving at least a first device and a second device including:
receiving an access request,
in response to the access request, recording at least one image with the first device,
extracting at least one facial feature of the at least one image,
receiving a template from the second device,
generating an access signal indicative of whether the user has access based on a comparison of the at least one facial feature and the template, and
outputting the access signal.
G07C 9/25 - Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
75.
Detector for identifying at least one material property
Described herein is a detector for identifying at least one material property m. The detector includes at least one sensor element including a matrix of optical sensors, the optical sensors each having a light-sensitive area. The sensor element is configured for recording at least one reflection image of a light beam originating from at least one object. The detector includes at least one evaluation device configured for determining the material property m by evaluation of at least one beam profile of the reflection image and evaluation of a material feature φ2m.
G01S 17/46 - Indirect determination of position data
G01B 11/22 - Measuring arrangements characterised by the use of optical techniques for measuring depth
G01C 21/16 - NavigationNavigational instruments not provided for in groups by using measurement of speed or acceleration executed aboard the object being navigatedDead reckoning by integrating acceleration or speed, i.e. inertial navigation
G01S 17/66 - Tracking systems using electromagnetic waves other than radio waves
G06T 5/20 - Image enhancement or restoration using local operators
G06T 7/521 - Depth or shape recovery from laser ranging, e.g. using interferometryDepth or shape recovery from the projection of structured light
G06T 7/73 - Determining position or orientation of objects or cameras using feature-based methods
G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
H04N 23/56 - Cameras or camera modules comprising electronic image sensorsControl thereof provided with illuminating means
H04N 23/74 - Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
76.
MULTI SINGLE DETECTOR APPLICATION SPECIFIC SPECTROMETER
Disclosed herein is a spectral measurement device for measuring optical radiation provided by at least one measurement object in at least one classification based spectral measurement. The spectral measurement device includes:
at least one radiation source configured for emitting optical radiation at least partially towards the measurement object;
at least two photodetectors, wherein each photodetector includes at least one pixel;
at least one read-out device configured for measuring the photodetector signals and generating at least one item of spectral data; and
at least one evaluation device comprising at least one processor and at least one memory storage.
Disclosed herein is a spectral measurement device for measuring optical radiation provided by at least one measurement object in at least one classification based spectral measurement. The spectral measurement device includes:
at least one radiation source configured for emitting optical radiation at least partially towards the measurement object;
at least two photodetectors, wherein each photodetector includes at least one pixel;
at least one read-out device configured for measuring the photodetector signals and generating at least one item of spectral data; and
at least one evaluation device comprising at least one processor and at least one memory storage.
The evaluation device is configured for generating at least one item of measurement information by applying the classification model and the transfer function to the item of spectral data.
G01N 21/31 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
A method for authenticating a user of a device (110) is proposed. The method comprising: a. projecting (130) a plurality of light beams through a display (114) onto the user by a projector (112), wherein the plurality of light beams comprises a first light beam and a second light beam, and directing the first light beam and the second light beam to illuminate an at least partially overlapping area of the user by the display (114), b. generating (132) a pattern image showing the projecting of the plurality of light beams onto the user, c. extracting (134) liveness data from the pattern image, d. allowing (136) the user to perform an operation on the device (110) that requires authentication based on the liveness data.
Disclosed herein is a method for classifying a sample into one of at least two types of polyamide. The method includes the following steps:
a) providing at least one sample, where the sample includes at least one type of polyamide;
b) acquiring at least one spectrum of the sample using at least one near-infrared spectrometer device;
c) determining at least one peak from the at least one spectrum; and
d) classifying the sample depending on the at least one peak determined from the at least one spectrum into one of the at least two types of polyamide.
G01N 21/359 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
The present invention refers to a spectrometer device (110) for obtaining spectroscopic information on at least one object (112), the spectrometer device (110) comprising: i. at least one first light source (114) for generating illumination light (116) for illuminating the object (112), the first light source (114) comprising at least one first light-emitting diode (118) and at least one first luminescent material (120) for light-conversion of primary light generated by the first light-emitting diode (118); ii. at least one second light source (114') for generating illumination light (116') for illuminating the object (112), the second light source (114') comprising at least one second light-emitting diode (118') and at least one second luminescent material (120') for light-conversion of primary light generated by the second light-emitting diode (118'); iii. at least one detector (128) for detecting detection light (130) from the object (112) and for generating at least one detector signal for each of the first light source (114) and the second light source (114') thereby; iv. at least one driving unit (138) for electrically driving the first light source (114) and the second light source (114'), the driving unit (138) being configured for jointly driving the first light source and the second light source; and v. at least one evaluation unit (136) for evaluating the detector signals generated by the detector (128) and for deriving the spectroscopic information on the object (112) from the detector signals.
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112) is disclosed. The spectrometer device (110) comprises: - at least one detector (116) for detecting light from an object (112); - at least one optical filter (122) configured for transferring incident light within at least one selected wavelength range onto the detector (116); - at least one light source (126) configured for emitting light in at least one optical spectral range; - at least one sample interface (132) configured for allowing the emitted light of the light source(126) to illuminate an object (112) held by the sample interface (132) and configured for allowing light from the object (112) held by the sample interface (132) to propagate via the optical filter (122) to the detector (116), wherein the sample interface (132) comprises at least one module cover window (134) comprising at least one substrate (136), wherein the module cover window (134) comprises at least one internal calibration target (138) partially covering the substrate (136); - at least one first optical path (140), wherein the first optical path (140) is configured for allowing the emitted light of the light source (126) to propagate via the optical filter (122) to the detector (116) by passing the sample interface (132) at least once; and - at least one second optical path (142), wherein the second optical path (142) is configured for allowing the emitted light of the light source (126) to propagate via the optical filter (122) to the detector (116) by interacting with the internal calibration target (138) at least once.
A spectrometer device (110) and a method of obtaining spectroscopic information on at least one object (112) are disclosed. The spectrometer device (110) comprises: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118) into secondary light, wherein the illumination light (116) at least partially comprises the primary light and the secondary light; ii. at least one broadband detector (128) for detecting detection light (130) from the object (112) in a spectral range at least partially comprising the spectral ranges of the primary light and the secondary light, wherein the broadband detector (128) is configured for generating at least one primary detector signal upon detecting the detection light (130) in the spectral range of the primary light, wherein the broadband detector (128) is further configured for generating at least one secondary detector signal upon detecting the detection light (130) in the spectral range of the secondary light; and iii. at least one evaluation unit (136) for evaluating the primary detector signal and the secondary detector signal generated by the broadband detector (128), for determining temperature information (137) on the light source (114) from one of the primary detector signal or the secondary detector signal, and for deriving the spectroscopic information on the object (112) from the other of the primary detector signal or the secondary detector signal by taking into account the temperature information (137) on the light source (114).
A spectrometer device (110) and a method of obtaining spectroscopic information on at least one object (112) are disclosed. The spectrometer device (110) comprises: at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118) into secondary light; ii. at least one broadband detector (128) for detecting detection light (130) in a spectral range at least partially comprising the spectral ranges of the primary light and the secondary light, wherein the broadband detector (128) is configured for generating at least one primary detector signal upon detecting the detection light (130) in the spectral range of the primary light, wherein the broadband detector (128) is further configured for generating at least one secondary detector signal upon detecting the detection light (130) in the spectral range of the secondary light; and iii. at least one evaluation unit (136) for evaluating the primary detector signal and the secondary detector signal generated by the broadband detector (128), for determining responsivity information (137) on the broadband detector (128) from one of the primary detector signal or the secondary detector signal, and for deriving the spectroscopic information on the object (112) from the other of the primary detector signal or the secondary detector signal by taking into account the responsivity information (137) on the broadband detector (128).
A spectrometer device (110) and a method of obtaining spectroscopic information on at least one object (112) are disclosed. The spectrometer device (110) comprises: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118) into secondary light, wherein the illumination light (116) at least partially comprises the primary light and the secondary light; ii. at least one broadband detector (128) for detecting detection light (130) from the object (112) in a spectral range at least partially comprising the spectral ranges of the primary light and the secondary light, wherein the broadband detector (128) is configured for generating at least one primary detector signal upon detecting the detection light (130) in the spectral range of the primary light, wherein the broadband detector (128) is further configured for generating at least one secondary detector signal upon detecting the detection light (130) in the spectral range of the secondary light; and iii. at least one evaluation unit (136) for evaluating at least one of the primary detector signal and the secondary detector signal generated by the broadband detector (128) and for determining the spectroscopic information on the object (112) from at least one of the primary detector signal and the secondary detector signal.
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
86.
CALIBRATION AND OPERATION METHODS FOR DEVICES FOR MONITORING AN EMISSION TEMPERATURE
The invention refers to a calibration method of assembling a set of items of information for use in a method for operating a measurement device (110) for monitoring an emission temperature of at least one radiation emitting element (114), wherein the measurement device (110) comprises a detector module (112), a transition material (116) and an assembly unit (111 ), wherein the detector module (112) and the transition material (116) are designated for being integrated into the assembly unit (111) when performing the method for operating a measurement device (110) for monitoring an emission temperature of at least one radiation emitting element (114) in a manner that the transition material (116) is arranged between the detector module (112) and the radiation emitting element (114) such that radiation generated by the radiation emitting element (114) incident onto the detector module (112) is propagating through the transition material (116), wherein the detector module (112) is designated for generating at least one sensor signal depending on an intensity of the thermal radiation, the method comprising the following steps: (i) performing a plurality of calibration measurements for determining at least one relationship (352) between at least one sensor signal and at least one temperature of a radiation emitting element (114) by measuring a plurality of sensor signals for at least two different emission temperatures of at least one radiation emitting calibration element when the detector module (112) and the transition material (116) are separate from the assembly unit (111); (ii) performing at least one further calibration measurement for determining at least one correction for the at least one relationship (352) by measuring at least one sensor signal for at least one known emission temperature of at least one radiation emitting calibration when the detector module (112) and the transition material (116) are integrated in the assembly unit (111); (iii) recording the relationship (352) and the correction.
G01J 5/20 - Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
The invention is in the area of polymer compositions containing carbon particles suitable for infrared spectroscopy. It relates to a polymer composition containing - a polymer, - carbon particles and - a laser absorbing additive, wherein at least a part of the surface of the polymer composition absorbs less infrared radiation than the bulk.
A display device (100) is disclosed, comprising: - at least one pattern illumination source (112) configured for emitting an infrared light pattern (116), - at least one flood illumination source (114) configured for emitting infrared flood light (118), - at least one image generation unit (150) configured for generating at least one pattern image while the pattern illumination source (112) is emitting the infrared light pattern (116) and configured for generating at least one flood image while the flood illumination source (114) is emitting infrared flood light (118), - at least one masking element (130) configured for covering at least one contiguous area around the flood illumination source (114) and/or the pattern illumination source (112), - at least one display (140) configured for displaying content, wherein the display (140) covers at least partially the pattern illumination source (112), the flood illumination source (114), the masking element (130) and/or the image generation unit (150).
A method for face authentication is proposed. The method includes at least one face detection step including determining at least one first image by using at least one camera, determining at least one material property from a second image, where the second image is recorded while projecting at least one illumination pattern including a plurality of illumination features on the scene, and at least one authentication step including authenticating the detected face by using the face detection and the material property.
G06V 10/145 - Illumination specially adapted for pattern recognition, e.g. using gratings
G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
G06V 10/54 - Extraction of image or video features relating to texture
G06V 10/60 - Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/16 - Human faces, e.g. facial parts, sketches or expressions
90.
DEVICE AND METHOD FOR MONITORING AN EMISSION TEMPERATURE OF A RADIATION EMITTING ELEMENT
Disclosed herein are a device for monitoring an emission temperature of at least one radiation emitting element, a heating system for heating the at least one radiation emitting element to emit thermal radiation at an emission temperature, a method for monitoring an emission temperature of at least one radiation emitting element, and a method for heating the at least one radiation emitting element to emit thermal radiation at an emission temperature.
BiasoutRefRefBiasoutRef RefoutRef Ref through the reference resistor (182) thereby estimating the bias voltage influence for obtaining the spectroscopic information, wherein the spectroscopic information on the object (112) is compensated for the bias voltage influence.
G01J 5/90 - Testing, inspecting or checking operation of radiation pyrometers
G01J 5/44 - Radiation pyrometry, e.g. infrared or optical thermometry using extension or expansion of solids or fluids using change of resonant frequency, e.g. of piezoelectric crystals
A spectrometer device (110) and a method of obtaining spectroscopic information on at least one object (112) are disclosed. The spectrometer device (110) comprises: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112); ii. at least one detector (128) for detecting detection light (130) from the object (112) and generating at least one detector signal; iii. at least one driving unit (138) for electrically driving the light source (114); iv. at least one multi-channel read-out integrated circuit (139), wherein each channel of the multi-channel read-out integrated circuit (139) comprises at least one buffered direct injection (BDI) circuit (141), wherein the BDI circuit (141 ) is configured for read-out of the detector signal, wherein the BDI circuit (141) is configured for generating at least one item of information on an electrically measurable quantity required for driving the light source (114), wherein the multi-channel read-out integrated circuit (139) comprises at least one multi-channel read-out application-specific integrated circuit (ASIC) (142) configured for synchronous sampling the detector signal and the item of information on the electrically measurable quantity required for driving the light source (114); and v. at least one evaluation unit (136) for evaluating at least one detector signal generated by the detector (128) and for deriving the spectroscopic information on the object (112) from the detector signal, wherein the evaluation unit (136) is configured for taking into consideration the item of information on the electrically measurable quantity required for driving the light source (114) when deriving the spectroscopic information from the detector signal.
The invention relates to a method of operating a spectrometer device (110) for obtaining spec troscopic information on at least one object (112), the method comprising, particularly, evaluating the detector (128) signal deriving the spectroscopic information on the object (112) thereof by using at least one evaluation unit (136) of the spectrometer device (110), the evaluation unit (136) being configured for selecting at least one item of correction information from a predetermined set of items of correction information in accordance with the actual value of the at least one operating parameter and for taking the selected item of correction information into account for the deriving of the spectroscopic information. The invention further relates to, a calibration method of assembling a set of items of correction information, a spectrometer device (110) for obtaining spectroscopic information on at least one object (112), a computer program, a computer-readable storage medium and to a non-transient computer-readable medium. The invention has the advantage that the operating parameter may provide for a reliable correction parameter, particularly as the ambient temperature may be considered. Thereby, a fluctuation in a spectral flux of the at least one light source (114) and/or in spectral property, specifically a shift, of the at least one light source (114) may be compensated.
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112) is proposed. The spectrometer device (110) comprises: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118); ii. at least one detector (128) for detecting detection light (130) from the object (112); iii. at least one driving unit (138) for electrically driving the light source (114); iv. at least one measurement unit (139) for generating at least one item of information on at least one electrically measurable quantity, in particular a forward voltage, required for driving the light-emitting diode (118); and v. at least one evaluation unit (136) for evaluating at least one detector signal generated by the detector (128) and for deriving the spectroscopic information on the object (112) from the detector signal, wherein the evaluation unit (136) is configured for taking into consideration the item of information on the at least one electrically measureable quantity, in particular the forward voltage, when deriving the spectroscopic information from the detector signal.
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112), the spectrometer device (110) comprising: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118);10 ii. at least one detector (128) for detecting light (116, 130, 256) and, thereby, generating at least one detector signal; iii. at least one evaluation unit (136) configured for deriving the spectroscopic information on the object (112) from the at least one detector signal, wherein the evaluation unit (136) is configured for deriving the spectroscopic information on the object (112) by taking into consideration wavelength correction information.
G01N 21/27 - ColourSpectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection
G01J 3/10 - Arrangements of light sources specially adapted for spectrometry or colorimetry
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
96.
CONSIDERING A TIME CONSTANT FOR OBTAINING SPECTROSCOPIC INFORMATION
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112), the spectrometer device (110) comprising: (i) at least one light source (114) configured for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one lightemitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118), wherein the spectrometer device (110) is configured for driving the light source (114) in a manner that the driving state of the light source (114) is changed at least one time; (ii) at least one detector (128) configured for detecting light and, thereby, generating at least one detector signal when the driving state of the light source (114) is changed, wherein the detector signal is time resolved; (iii) at least one evaluation unit (136) configured for deriving the spectroscopic information on the object (112) by detecting detection light from the object (112) by using the detector (128), and further configured for deriving at least one time constant T of the light source (114) describing a property of the light source (114) when the driving state is changed from the time resolved detector signal, wherein the at least one time constant T is considered when the spectroscopic information on the object (112) is derived.
λλ, wherein the evaluation (136) unit is configured for correcting for a temperature dependent drift of the detector (128) in the detector signal Sλ by using the reference detector signal R.
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112) is disclosed. The spectrometer device (110) comprises: i. at least one light source (114) for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) for generating primary light and at least one luminescent material (120) for light-conversion of the primary light into secondary light; ii. at least one detector for detecting detection light from the object (112) and for generating at least one detector signal; iii. at least one driving unit (138) for driving the light source (114) in a manner that the light-emitting diode (118) is generating the primary light, wherein the light-emitting diode (118) is driven with a pulse modulation scheme having a variable duty cycle for controlling an emission power of the secondary light, wherein the duty cycle is varied based on an influencing parameter having an influence on the light- conversion efficiency of the luminescent material (120); and iv. at least one evaluation unit (136) for evaluating the detector signal generated by the detector and for deriving the spectroscopic information on the object (112) from the detector signal. Furthermore, a corresponding method of obtaining spectroscopic information on at least object (112) is disclosed.
H01L 25/16 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices the devices being of types provided for in two or more different subclasses of , , , , or , e.g. forming hybrid circuits
99.
CONSIDERING A PLURALITY OF TIME CONSTANTS τ FOR OBTAINING SPECTROSCOPIC INFORMATION
A spectrometer device (110) for obtaining spectroscopic information on at least one object (112), the spectrometer device (110) comprising: (i) at least one light source (114) configured for generating illumination light (116) for illuminating the object (112), the light source (114) comprising at least one light-emitting diode (118) and at least one luminescent material (120) for light-conversion of primary light generated by the light-emitting diode (118), wherein the spectrometer device (110) is configured for driving the light source (114) in a manner that the driving state of the light source (114) is changed at least one time; (ii) at least one detector (128) configured for detecting detection light (130) from the object (112) and, thereby, generating at least one detector signal when the driving state of the light source (114) is changed, wherein the detector signal is time-resolved; (iii) at least one evaluation unit (136) configured for evaluating the detector signal generated by the detector (128) for deriving the spectroscopic information on the object (112), and further configured for considering a plurality of known time constants (τ) of the light source (114) describing a property of the light source (114) when the driving state is changed for determining a contribution of signal intensities of a plurality of wavelength intervals (236) to the detector signal when the spectroscopic information on the object (112) is derived.
121 212122(T) may provide for a reliable correction parameter. Thereby, a fluctuation in a spectral flux of the at least one light source (114) and/or in spectral property, specifically a shift, of the at least one light source (114) may be compensated.
