Optical devices that combine imaging with spectral detection usually require bulky or expensive optics or are limited in the spectral measurements that can be made. The disclosed device uses a lens and mirror to provide two image planes: one for a pixelated detector and the other for an optical fiber assembly. The optical fiber assembly may be scanned over most or all of the field of view, or this may be achieved with a fixed fiber assembly and translatable mirror. Multiple fibers may be included in the assembly and multiple measurement or other devices may be connected to the remote ends of the optical fibers.
Optical devices that combine imaging with spectral detection usually require bulky or expensive optics or are limited in the spectral measurements that can be made. The disclosed device uses a lens and mirror to provide two image planes: one for a pixelated detector and the other for an optical fiber assembly. The optical fiber assembly may be scanned over most or all of the field of view, or this may be achieved with a fixed fiber assembly and translatable mirror. Multiple fibers may be included in the assembly and multiple measurement or other devices may be connected to the remote ends of the optical fibers.
G01D 18/00 - Testing or calibrating apparatus or arrangements provided for in groups
G01D 5/28 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
G02B 26/08 - Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
3.
System, Method and Apparatus for Wide Wavelength Range Imaging with Focus and Image Correction
A variable focus imaging lens assembly has different, calibrated settings for each of multiple different wavelength ranges. Images are captured for each wavelength range using the different settings, corrected and stacked to form an image data cube. Using multiple wavelength ranges allows a scene or object to be imaged by multispectral imagers, hyperspectral imagers and imaging spectrometers using an overall wide wavelength range.
A variable focus imaging lens assembly has different, calibrated settings for each of multiple different wavelength ranges. Images are captured for each wavelength range using the different settings, corrected and stacked to form an image data cube. Using multiple wavelength ranges allows a scene or object to be imaged by multispectral imagers, hyperspectral imagers and imaging spectrometers using an overall wide wavelength range.
A system and method for an imaging circadiometer that measures the spatial distribution of eye-mediated, non-image-forming optical radiation within the visible spectrum.
A multicamera imaging system includes multiple imaging subsystems. Each subsystem includes imaging optics, an optical filter, an optional shutter, a digital imaging sensor, and an analog-to-digital converter. After optional scaling, image displacement, keystone and other corrections, the captured images are aligned to result in a multi-layer registered image. Illumination metrics of individual pixels of the registered image are then calculated. The spatial distribution of the optical illumination properties of planar objects are measured, including colorimetric, photometric, radiometric, and spectroradiometric characterization and calibration of digital image displays and radiant scenes.
G02B 7/09 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
H04N 5/235 - Circuitry for compensating for variation in the brightness of the object
G02B 7/28 - Systems for automatic generation of focusing signals
H04N 5/232 - Devices for controlling television cameras, e.g. remote control
H04N 9/09 - Picture signal generators with more than one pick-up device
H04N 9/64 - Circuits for processing colour signals
A multicamera imaging system includes multiple imaging subsystems. Each subsystem includes imaging optics, an optical filter, an optional shutter, a digital imaging sensor, and an analog-to-digital converter. After optional scaling, image displacement, keystone and other corrections, the captured images are aligned to result in a multi-layer registered image. Illumination metrics of individual pixels of the registered image are then calculated. The spatial distribution of the optical illumination properties of planar objects are measured, including colorimetric, photometric, radiometric, and spectroradiometric characterization and calibration of digital image displays and radiant scenes.
