发明人：
DIJKEN, DURANDUS, KORNELIUS | TALGORN, ELISE, CLAUDE, VALENTINE | BOOIJ, SILVIA, MARIA | THIJSSEN, JOHANNES, MARIA
摘要：
The invention provides a lighting device (12) configured to provide both functional lighting for illuminating a space, and simultaneously to present a spatially dynamic sparkling light display. The device comprises a chamber (14) containing one or more light sources (28). The light sources are arranged to direct light in the direction of a translucent surface portion (20), and in the direction of a plurality of light exit areas (32) delimited by the translucent surface portion. The light exit areas each have a higher transmittance than the surrounding surface portion.
权利要求：
CLAIMS:
1. A lighting device for simultaneously providing functional lighting for illuminating a space and a dynamic sparkling or glittering effect,
wherein the lighting device comprises an exposed outer surface and at least one primary light source disposed within a chamber,
wherein the chamber has an internal surface arrangement including at least a first surface portion and an opposing second surface portion, the at least one primary light source being located on the first surface portion, the second surface portion being translucent and delimiting a plurality of light exit areas having a higher transmittance than the second surface portion, and
wherein the at least one primary light source is arranged to illuminate the plurality of light exit areas delimited by the translucent second surface portion in order to create a plurality of secondary light sources located on the exposed outer surface of the lighting device, each of the plurality of secondary light sources having a light-emitting surface with an anisotropic luminance.
2. A lighting device as claimed in claim 1, wherein the first surface portion is a mounting surface portion, and wherein a plurality of primary light sources is mounted to said mounting surface portion. 3. A lighting device as claimed in claim 1 , wherein one or more internal surfaces of the chamber are at least partially reflective and optionally wherein said internal surfaces are bounding internal surfaces.
4. A lighting device as claimed in any preceding claim, further comprising one or more optical elements each arranged in optical communication with one or more of the plurality of light exit areas, wherein each optical element is adapted to absorb, deflect or refract a portion of the light incident at them.
5. A lighting device as claimed in claim 4, wherein each optical element is directly coupled to or is comprised by one or more of the plurality of light exit areas.
6. A lighting device as claimed in any preceding claim, comprising a plurality of primary light sources, the plurality of primary light sources comprising at least a first subset of primary light sources and a second subset of primary light sources, the first subset of primary light sources being configured to emit light that is directly incident at one or more of the plurality of light exit areas, and the second subset of primary light sources being configured to emit light that is not directly incident at any of the plurality of light exit areas.
7. A lighting device as claimed in claim 6, wherein the output intensity of each of the first and second subsets of primary light sources is independently adjustable.
8. A lighting device as claimed in claim 7, wherein the lighting device further comprises a controller configured to adjust the output intensity of the first subset of primary light sources in dependence upon the output intensity of the second subset of primary light sources.
9. A lighting device as claimed in any preceding claim, wherein the lighting device further comprises a translucent front panel positioned directly opposing an exterior side of said translucent second surface portion, and a space in between the translucent front panel and the translucent second surface portion.
10. A lighting device as claimed in claim 9, wherein the space in between the translucent front panel and the translucent second surface portion is configured to receive and/or at least partially retain a light transmissive fluid.
1 1. A lighting device as claimed in any preceding claim, wherein the plurality of light exit areas comprises a first pattern of light exit areas, and the at least one primary light source is a plurality of primary light sources comprising a second pattern of primary light sources, the second pattern of primary light sources being different to the first pattern of light exit areas, and wherein at least one of the first pattern of light exit areas and the second pattern of primary light sources optionally is an irregular or semi-random pattern.
12. A lighting device as claimed in any preceding claim, wherein the at least one primary light source comprises a first set of primary light sources adapted to emit light of a first spectral composition, and a second set of primary light sources adapted to emit light of a second spectral composition, wherein the chamber is arranged to at least partially mix the light of the first spectral composition with that of the second spectral composition.
13. A lighting device as claimed in claim 12, further comprising one or more further optical elements together adapted to direct light emitted by the first set of primary light sources through the light exit areas at a first range of propagation angles, and to direct light emitted by the second set of primary light sources through the light exit areas at a second range of propagation angles, and wherein optionally the further optical elements comprise light blocking elements adapted to deflect or absorb at least a portion of the light emitted by the first and/or second sets of primary light sources.
14. A lighting device as claimed in any preceding claim wherein the translucent second surface portion comprises one or more shaped opaque regions for patterning the light output from the lighting device and/or wherein the lighting device comprises a front panel element comprising one or more shaped opaque regions for patterning light output from the lighting device.