摘要:
A light emitting device, comprising a flexible substrate (2) with a single, structured conductive layer (5), and a plurality of LEDs (3) arranged on said substrate (2), said structured conductive layer (5) forming electrodes for driving said LEDs (3). The structured conductive layer comprises a plurality of heat dissipating pads (8), each having an area significantly larger than the area of each LED (3), and each LED (3a) is thermally connected to at least one of said pads (8a), and electrically connected in series between two pads (8a, 8b). Through this design, each LED is thermally connected to a relatively large heat dissipating area, and the thermal energy built up in the LED will be distributed over this area, and then dissipated upwards and downwards from this area. As the addressing can be handled by a single conducting layer, the flexibility of the substrate is improved compared to multilayer substrates. By connecting each LED in series between two pads, a very large portion of the conducting layer can be used for the pads, and very little area needs to be occupied by conducting tracks, which otherwise may be a problem with single layer designs.
摘要:
A light emitting device, comprising a flexible substrate (2) with a single, structured conductive layer (5), and a plurality of LEDs (3) arranged on said substrate (2), said structured conductive layer (5) forming electrodes for driving said LEDs (3). The structured conductive layer comprises a plurality of heat dissipating pads (8), each having an area significantly larger than the area of each LED (3), and each LED (3a) is thermally connected to at least one of said pads (8a), and electrically connected in series between two pads (8a, 8b). Through this design, each LED is thermally connected to a relatively large heat dissipating area, and the thermal energy built up in the LED will be distributed over this area, and then dissipated upwards and downwards from this area. As the addressing can be handled by a single conducting layer, the flexibility of the substrate is improved compared to multilayer substrates. By connecting each LED in series between two pads, a very large portion of the conducting layer can be used for the pads, and very little area needs to be occupied by conducting tracks, which otherwise may be a problem with single layer designs.
摘要:
A lighting system is disclosed which includes a light source unit and a projection system for producing a desired light distribution pattern in a target area, especially for use in an automotive head lighting, studio and theater lighting, indoor spots with adjustable beam width or direction, architectural dynamic lighting, disco lighting and other. The lighting system is especially suitable for a light source unit having one or more Lambertian light sources, especially a plurality of LEDs. For generating a desired light distribution pattern in the target area, the light source unit may include a plurality of collimators that are configured especially such that the curved focal plane (P) of the projection system intersects with or tangentially touches the exit apertures of the collimators.
摘要:
The invention describes a lighting assembly (10, 10′, 20, 20′) for use in a lighting arrangement (2) of a vehicle (1), comprising a projection lens (11, 21) and an array (12, 22) of light sources (S11, . . . , S26), wherein the projection lens (11, 21) and the light source array (12, 22) are arranged according to an asymmetry displacement (Φi, Φ2, di, d2) of the optical axis (X1, X2) of the projection lens (11, 21), and wherein the light sources (S11, . . . , S26) of the light source array (12, 22) of the lighting assembly (10, 10′, 20, 20′) are individually controllable to adjust a swivel angle (σ1, σ2) of a light beam (BL, BH) generated by that lighting assembly (10, 10′, 20, 20′). The invention further describes a controller (3) for controlling the light sources (S11, . . . , S26) of such a lighting assembly (10, 10′, 20, 20′). The invention also describes a lighting arrangement (2) for a vehicle (1), comprising such a lighting assembly (10, 10′, 20, 20′) and such a controller (3) for controlling the light sources (S11, . . . , S26) of the lighting assembly (10, 10′, 20, 20′) to adjust the swivel angle (σ1 σ2) of the light beam (BL, BR). The invention also describes a method of generating a front beam (BL, BR) for a vehicle (1) comprising such a lighting assembly (10, 10′, 20, 20′).
摘要:
A lighting system is disclosed comprising a light source unit (1) and a projection system (2) for producing a desired light distribution pattern in a target area, especially for use in an automotive head lighting, studio and theatre lighting, indoor spots with adjustable beam width or direction, architectural dynamic lighting, disco lighting and other. The lighting system is especially suitable for a light source unit (1) having one or a plurality of Lambertian light sources (11), especially a plurality of LEDs. For generating a desired light distribution pattern in the target area, the light source unit (1) comprises a plurality of collimators (12) which are dimensioned and/or arranged especially such that the curved focal plane (P) of the projection system (2) intersects with or tangentially touches the exit apertures of the collimators (12).
摘要:
Projection system comprising at least two light sources, a projection lens and a spatial light modulator located between the light sources and the projection lens, which light modulator comprises a plurality of light-deflection devices each provided with an element which is tiltable about a tilt axis. The light sources are arranged with respect to the spatial light modulator in such a way that, in operation, the centers of the light beams coming from the light sources and projected on each element are located on a projection line which extends substantially parallel to the tilt axis of the element.
摘要:
The electric lamp with reflector has a concave reflecting surface of a rotationally-symmetric general shape, onto which flat four-sided facets are superimposed which are tangent to the general shape. The facets each illuminate a rectangular field in a plane perpendicular to the optical axis of the reflector, which fields are of equal shape and size and have the same orientation. Thereby, the electric lamp with reflector is able to illuminate a rectangular field with a high degree of uniformity and of efficiency. The electric lamp with reflector may be used in an image-projection apparatus.
摘要:
The invention provides a mirror unit having a mirror unit front with a mirror surface and having a lighting unit comprising a plurality of light sources and a lenticular lens array. The light sources and the lenticular lens array are arranged to provide mirror unit light in a space in front of the mirror unit front.
摘要:
The invention describes a lighting assembly (10, 10′, 20, 20′) for use in a lighting arrangement (2) of a vehicle (1), comprising a projection lens (11, 21) and an array (12, 22) of light sources (S11, . . . , S26), wherein the projection lens (11, 21) and the light source array (12, 22) are arranged according to an asymmetry displacement (Φi, Φ2, di, d2) of the optical axis (X1, X2) of the projection lens (11, 21), and wherein the light sources (S11, . . . , S26) of the light source array (12, 22) of the lighting assembly (10, 10′, 20, 20′) are individually controllable to adjust a swivel angle (σ1, σ2) of a light beam (BL, BH) generated by that lighting assembly (10, 10′, 20, 20′). The invention further describes a controller (3) for controlling the light sources (S11, . . . , S26) of such a lighting assembly (10, 10′, 20, 20′). The invention also describes a lighting arrangement (2) for a vehicle (1), comprising such a lighting assembly (10, 10′, 20, 20′) and such a controller (3) for controlling the light sources (S11, . . . , S26) of the lighting assembly (10, 10′, 20, 20′) to adjust the swivel angle (σ1 σ2) of the light beam (BL, BR). The invention also describes a method of generating a front beam (BL, BR) for a vehicle (1) comprising such a lighting assembly (10, 10′, 20, 20′).
摘要:
The present invention relates to a light emitting device (100) comprising at least one light emitter (101), a substrate (102) and a reflective optic housing (103,108), the space between the reflective optic housing (103,108) and the one or more light emitters (101) being filled at least partly by a suspension of a reflective material (104), in order to increase the light output from the light emitter(s) (101).