Abstract: A luminaire (1) comprising identical curved LED Modules (13, 13?, 13?) in an inner and an outer arrangement of LED Modules. Said LED Module comprising a curved PCB (14) having a main surface and a number of LEDs (15) arranged thereon. The LED Module has width W and is curved with its main surface extending in a plane Q. The LED Module extends over a circle with a radius Rc, wherein 200 mm<=Rc<=450 mm, and extends over an angle a over said circle, wherein 36°<=a<=72°. The number of LEDs is in between 3 and 150. Each LED (15) has a respective doughnut like shaped lens to render the LED during operation to emit a rotational symmetric batwing beam with a maximum intensity Imax of the batwing beam at an angle 13 with 60°<=13<=80° with said optical axis, and a FWHM in the range of 15-30°.

Abstract: A luminaire (1) comprising identical curved LED Modules (13, 13?, 13?) in an inner and an outer arrangement of LED Modules. Said LED Module comprising a curved PCB (14) having a main surface and a number of LEDs (15) arranged thereon. The LED Module has width W and is curved with its main surface extending in a plane Q. The LED Module extends over a circle with a radius Rc, wherein 200 mm<=Rc<=450 mm, and extends over an angle a over said circle, wherein 36°<=a<=72°. The number of LEDs is in between 3 and 150. Each LED (15) has a respective doughnut like shaped lens to render the LED during operation to emit a rotational symmetric batwing beam with a maximum intensity Imax of the batwing beam at an angle 13 with 60°<=13<=80° with said optical axis, and a FWHM in the range of 15-30°.

Abstract: 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.

Abstract: A luminaire housing (10) comprises a light chamber (15) at least partially delimited by a light-transmissive cover (30). The light chamber comprises a mounting region for mounting at least one solid state lighting element. The cover comprises at least one rounded corner section (31) in between two further sections (33), wherein the rounded corner section has an inner surface (311) having opposing inner endpoints (103, 105) and an outer surface (313) having opposing outer endpoints (113, 115). Each inner endpoint is positioned relative to the outer endpoint proximal to said inner endpoint such that no ray of light (301, 301?) emitted by the at least one solid state lighting element entering the light-transmissive cover via an inner surface (331) of a further section exits the light-transmissive cover from the outer surface of a curved corner section. A luminaire including such a luminaire housing, a design method and a manufacturing method for such a luminaire housing are also disclosed.

Abstract: A luminaire housing (10) comprises a light chamber (15) at least partially delimited by a light-transmissive cover (30). The light chamber comprises a mounting region for mounting at least one solid state lighting element. The cover comprises at least one rounded corner section (31) in between two further sections (33), wherein the rounded corner section has an inner surface (311) having opposing inner endpoints (103, 105) and an outer surface (313) having opposing outer endpoints (113, 115). Each inner endpoint is positioned relative to the outer endpoint proximal to said inner endpoint such that no ray of light (301, 301?) emitted by the at least one solid state lighting element entering the light-transmissive cover via an inner surface (331) of a further section exits the light-transmissive cover from the outer surface of a curved corner section. A luminaire including such a luminaire housing, a design method and a manufacturing method for such a luminaire housing are also disclosed.

Abstract: A luminaire (10) is disclosed comprising a plurality of spatially separated solid state lighting elements (13), each solid state lighting element associated with a lens element (17) arranged to shape a luminous distribution (21, 23) around an optical axis (14) of the solid state lighting element and at least one further optical element (19) arranged to redistribute at least part of a peripheral portion (23) of said shaped luminous distribution such as to reduce a perceived brightness of the solid state light element along a viewing angle coinciding with said peripheral portion.

Abstract: A lighting system comprises an elongate light guiding structure comprising a input edge miming along the length of the structure, and first and second side walls which extend between the input edge and a end face, at least one of which is stepped. The steps comprise at least a first step region which forms a total internal reflection surface for the light provided into the light guiding structure from the input edge such that light leaves the light guiding structure from the second side wall, and at least a second step region which forms a refracting interface for the light provided into the light guiding structure from the input edge such that light leaves the light guiding structure from the first side wall. In this way the use of refraction and total internal reflection is combined to enable flexibility in the control of the light output distribution as well as the appearance of the system. The lighting system for example comprises luminaire for ceiling mounting.

Abstract: Presented is an LED module comprising: a printed circuit board, PCB, with a plurality of LEDs mounted thereon; and first and second optical cover plates each comprising an optically transmissive portion and coupled to the PCB so as to cover a respective subset of the plurality of LEDs. The first and second optical cover plates have complementary geometries so that they are self-aligning in two axes.

Abstract: A lighting system comprising an array of LEDs, collimators for collimating the light output from the LEDs and a lightguide mounted over the array of collimators. The lightguide comprises an elongate structure having a length direction with one light input end mounted over the collimators, wherein the general shape in cross section perpendicular to the length direction comprises a non-circular arc. The array of LEDs is mounted following a corresponding non-circular arc. Light extraction features are provided for out-coupling light from an outer arcuate surface of the lightguide. The non-circular arc formed by the outer surface of lightguide enables a non-uniform light output distribution to be formed. The shape of the surface can thus be used to control the directional light output.

Abstract: The invention relates to a lighting device for issuing a light beam in a main direction along an optical axis. The lighting device comprises a light source and a positive, refractive lens provided on the optical axis, the lens being movable with respect to the light source over the optical axis. The lighting device further comprises a mixing structure provided on the optical axis and having an added blurring strength FWHM, with FWHM being in a range of 3° to 15°.

Abstract: The invention provides a lighting device configured to present to an observer a spatially dynamic sparkling light dis play. The device comprises a luminaire containing a plurality of light sources (28) located on a first surface portion, and arranged to direct light in a direction of a plurality of light transmissive areas (32) formed within an opposing second surface portion. The opposing second surface portion may at least partially bound a chamber (14) within which the primary light sources are disposed, where an internal surface arrangement of the chamber is configured to absorb at least part of the spectral composition of any light emitted by the primary light sources which does not fall directly onto the light transmissive areas.

Abstract: 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.

Abstract: The invention relates to a lighting device for issuing a light beam in a main direction along an optical axis. The lighting device comprises a light source and a positive, refractive lens provided on the optical axis, the lens being movable with respect to the light source over the optical axis. The lighting device further comprises a mixing structure provided on the optical axis and having an added blurring strength FWHM, with FWHM being in a range of 3° to 15°.

Abstract: A lighting system comprising an array of LEDs, collimators for collimating the light output from the LEDs and a lightguide mounted over the array of collimators. The lightguide comprises an elongate structure having a length direction with one light input end mounted over the collimators, wherein the general shape in cross section perpendicular to the length direction comprises a non-circular arc. The array of LEDs is mounted following a corresponding non-circular arc. Light extraction features are provided for out-coupling light from an outer arcuate surface of the lightguide. The non-circular arc formed by the outer surface of lightguide enables a non-uniform light output distribution to be formed. The shape of the surface can thus be used to control the directional light output.

Abstract: Presented is an LED module comprising: a printed circuit board, PCB, with a plurality of LEDs mounted thereon; and first and second optical cover plates each comprising an optically transmissive portion and coupled to the PCB so as to cover a respective subset of the plurality of LEDs. The first and second optical cover plates have complementary geometries so that they are self-aligning in two axes.

Abstract: The present invention relates to a luminaire comprising one or more LED light sources (102) arranged within a light chamber that is enclosed by a translucent cover (302), having an inner surface (308), wherein the LED light source (102) is arranged to illuminate the inner surface (308) of the translucent cover (302). The translucent cover (302) comprises a prismatic optical structure (304) on the inner surface (308) for reflecting and/or refracting light from the LED light source (102) omni-directionally. The prismatic optical structure (304) is designed such that a direct view of the LED light source from outside the luminaire is obstructed by means of total internal reflection at the prismatic optical structure.

Abstract: There is provided a light-emitting device (1) that may be mounted in a ceiling. The light-emitting device (1) comprises an optically reflecting layer (11) and a light-transmissive layer (12) arranged such that a space is formed in-between. In the space a light source (10a, 10b) and a reflector (13a, 13b) are arranged such that light emitted by the light source (10a, 10b) is redirected by the reflector (13a, 13b) and emitted primarily towards a reflective side (14) of the optically reflecting layer (11). The reflector (13a, 13b) is arranged to emit a portion of the light directly towards the light-transmissive layer (12). Furthermore, the reflector (13a, 13b) may comprise optically specular portions (20a, 20b, 31) and optically diffusive portions (18, 32, 33, 34, 35) arranged such that a larger surface fraction of the reflector (13a, 13b) comprises diffusive surface portions closer to the optically reflecting layer (11).

Abstract: A non-transparent light-emitting construction element (100; 200; 300; 400), comprising: a construction element having a mounting side and a user-facing side (104; 204; 304) to be facing a user when the light-emitting construction element is used in a construction; and a light-emitter (108; 404) embedded in the construction element, wherein the light-emitter is embedded in the construction element in such a way that the light-emitter is non-visible in its off-state and light from the light-emitter escapes from the construction element when the light-emitter is in its on-state.