The invention relates to an optical system (2) for lighting units (S), having: an optical support (3) which extends linearly along a longitudinal axis (A) between a light inlet opening (LE) and a light outlet opening (LA) and which delimits a receiving area (R) for receiving optical elements (4, 5) between the openings (LE, LE), wherein an inner wall (30) of the optical support (3) facing the receiving area (R) has at least two structural sections (31), which are axially offset to each other with respect to the longitudinal axis (A), for releasably mounting a respective optical element (4, 5) in the receiving area (R).
F21V 17/02 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
F21S 8/06 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure by suspension
Optical system (2) for a spotlight (S), comprising a first optical element (3) and a second optical element (4), which are arranged optically one behind the other along a light-radiating axis (A), and an adjustment mechanism (5), which is coupled to the first optical element (3) and the second optical element (4) such that it can move the optical elements (3, 4) along the light-radiating axis (A) in such a way that the optical elements (3, 4) can be moved relative to one another between a distanced position, in which the optical elements (3, 4) are spaced apart along the light-radiating axis (A), and an adjacent position, in which the optical elements (3, 4) are arranged closer to one another than in the distanced position, and wherein the adjustment mechanism (5) is further coupled to the first optical element (3) and the second optical element (4) such that the optical elements (3, 4), when they are in the adjacent position, can be moved together along the light-radiating axis (A) while maintaining said adjacent position. The invention also relates to a lighting system (1) comprising a spotlight (S) and the optical system (2) according to the invention, and to a method for adjusting a light emission characteristic of a spotlight (S) of the lighting system (1).
F21W 131/406 - Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
G02B 7/10 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
In the case of a lighting fixture (100) with lighting means having LEDs (5) arranged one behind the other in the longitudinal direction (I) of the lighting fixture (100) and a reflector (10) which is concave in a plane perpendicular to the longitudinal direction (I) of the lighting fixture (100), the lighting means are arranged in the upper region (11) of the reflector (10) such that they emit light onto the reflector (10) in essentially the opposite direction from a light emission direction (A) of the light fitting (100), wherein a diffuser (20) is arranged below the lighting means and extends as far as the reflector (10).
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21S 8/04 - Lighting devices intended for fixed installation intended only for mounting on a ceiling or like overhead structure
Disclosed is a downlight (100) comprising an annular mounting frame (50) to be mounted in the area of a ceiling mounting hole, and a light fixture (10) that is to be fastened to the mounting frame (50) and includes a luminaire head (30) thereon. The mounting frame (50) and the light fixture (10) are designed such that the light fixture (10) is fastened to the mounting frame (50) by twisting the former (10) relative to the latter (50), additional securing means being provided which prevent the light fixture (10) from being twisted in the unlocking direction in a mounted position.
Disclosed is a downlight (100) comprising a mounting frame (50) to be mounted in the area of a ceiling mounting hole, and a light fixture (10) that is to be fastened to the mounting frame (50) and includes a luminaire head (30). The light fixture (10) is formed by a substantially C-shaped element having a main surface (11) and two angled wings (20) on two opposite sides of the main surface (11); the wings (20) of the light fixture (10) are designed in a flexible manner and in such a way as to interlock with the mounting frame (50).
F21S 8/02 - Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
F21V 17/16 - 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 by deformation of parts of the lighting deviceSnap action mounting
A lighting unit which has a lighting unit housing with a profiled element and which has a retaining element arranged on the profiled element for retaining another lighting unit component, for example a lighting unit top sleeve and/or an operating device. The lighting unit is designed such that the retaining element is held on the profiled element solely via a latching connection. The design allows the retaining element to be connected to the profiled element in a particularly simple manner. Additionally, no special fixing elements are required in order to attach the retaining element to the profiled element.
F21V 23/02 - Arrangement of electric circuit elements in or on lighting devices the elements being transformers or impedances
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21V 17/16 - 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 by deformation of parts of the lighting deviceSnap action mounting
A downlight comprises a light source for generating a light to be emitted downwards by the downlight, a mounting ring for retaining the downlight on a ceiling element, and a reflector for reflecting the light generated by the light source. A holding device which retains the reflector on the mounting ring is designed in such a way that the reflector is retained on the mounting ring merely by lying thereon.
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
The invention relates to a recessed light having a base body for holding a light source and a dome-shaped reflector which can be detachably fastened to the base body by means of a connecting element. The connecting element is designed such that an optical element for influencing the emission of light is accommodated and fixed when the base body and the reflector are fitted together.
F21V 17/06 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages onto or by the lamp holder
F21V 29/00 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems
The invention relates to a mounting element for a built-in light provided for fitting in a built-in opening. The mounting means (1) has a base part (4) and a locking element (5) that can be moved relative to the base part (4) from a mounting position into a locking position. A corresponding built-in light, equipped with the mounting element (1), can be introduced into the built-in opening, if the locking element is in the mounting position, and is fixed in a designated built-in position in the built-in opening if the locking element (5) is in the locking position. The mounting element further comprises means for independent movement of the locking element (5) from the mounting position to the locking position.
The invention relates to a light fixture (1), in particular a standard lamp or a table lamp, with a light head (10) which can be extended with respect to a carrier arm (5) and which accommodates a light source (15), and with a power supply lead (21) which extends up to the light head (10), wherein the power supply lead (21) is passed at least partially through the carrier arm (5), and a retraction mechanism (20), for the defined accommodation of the power supply lead (21), is disposed in the carrier arm (5) and/or in the light head (10).
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