Abstract: A luminaire is disclosed comprising an optical stack (200) transparent to radio waves, the optical stack comprising a first surface (210) including a light exit window (211) and a further surface (220) opposing the first surface, the optical stack including a planar light guide (300) having a first major surface facing or defining the first surface, an opposing second major surface facing or defining the further surface and at least one edge surface (310) extending between said opposing first and second major surfaces; and a frame (700) around the optical stack, the frame carrying at least one light source (100) optically coupled to one or more of said edge surfaces of the light guide, wherein the frame delimits the light exit window and an exposed portion (221) of the further surface opposing the light exit window, said light exit window and the exposed portion delimiting a conduit (230) for said radio waves through the optical stack.

Abstract: A modular ceiling kit comprising a luminaire arrangement and a mounting frame (12) is disclosed. The luminaire arrangement has a luminaire (20) with a first light exit window (22) framed by a rim (25). The mounting frame (12) has an aperture (13) for receiving the luminaire (20). The luminaire arrangement also has a component (30) that is mountable in between the mounting frame (12) and the luminaire (20). The component (30) has a first light exit window (22) framed by a rim (25). The component (30) comprises a second light exit window (35) larger than the first light exit window (22), the second light exit window (35) being delimited by a side wall arrangement (33) extending away from the second light exit window (35), wherein the component (30) is dimensioned such that when the component (30) is positioned on the luminaire (20), the component (30) obscures the rim (25) and the sidewall arrangement (33) creates a clearance (40) between the first light exit window (22) and the second light exit window (35).

Abstract: A modular ceiling kit comprising a luminaire arrangement and a mounting frame (12) is disclosed. The luminaire arrangement has a luminaire (20) with a first light exit window (22) framed by a rim (25). The mounting frame (12) has an aperture (13) for receiving the luminaire (20). The luminaire arrangement also has a component (30) that is mountable in between the mounting frame (12) and the luminaire (20). The component (30) has a first light exit window (22) framed by a rim (25). The component (30) comprises a second light exit window (35) larger than the first light exit window (22), the second light exit window (35) being delimited by a side wall arrangement (33) extending away from the second light exit window (35), wherein the component (30) is dimensioned such that when the component (30) is positioned on the luminaire (20), the component (30) obscures the rim (25) and the sidewall arrangement (33) creates a clearance (40) between the first light exit window (22) and the second light exit window (35).

Abstract: A luminaire is disclosed comprising an optical stack (200) transparent to radio waves, the optical stack comprising a first surface (210) including a light exit window (211) and a further surface (220) opposing the first surface, the optical stack including a planar light guide (300) having a first major surface facing or defining the first surface, an opposing second major surface facing or defining the further surface and at least one edge surface (310) extending between said opposing first and second major surfaces; and a frame (700) around the optical stack, the frame carrying at least one light source (100) optically coupled to one or more of said edge surfaces of the light guide, wherein the frame delimits the light exit window and an exposed portion (221) of the further surface opposing the light exit window, said light exit window and the exposed portion delimiting a conduit (230) for said radio waves through the optical stack.

Abstract: The invention provides a fixture element (1) for mounting a luminaire (10) at least partly in an opening (510) of a ceiling (500), wherein the fixture element (1) comprises (i) a body (100), (ii) a first side portion (155) protruding relative to the body (100) at a first side (150) of the body (100) and configured to support the luminaire (10), (iii) a second side portion (165) protruding relative to the body (100) at a second side (160) of the body (100), and (iv) an engagement element (200) resiliently connected to the second side (160) of the body (100) and configured to clamp a part of the ceiling (500) between the engagement element (200) and the second side portion (165).

Abstract: Disclosed is a luminaire (10) comprising a luminaire housing delimited by a light exit structure (20) engaging with an edge of a pliable container (30), wherein the container is structurally reinforced, i.e. rendered less pliable, by its engagement with the light exit structure; and at least one light engine (40) disposed within the luminaire housing. A method of manufacturing such a luminaire is also disclosed.

Abstract: The invention provides a fixture element (1) for mounting a luminaire (10) at least partly in an opening (510) of a ceiling (500), wherein the fixture element (1) comprises (i) a body (100), (ii) a first side portion (155) protruding relative to the body (100) at a first side (150) of the body (100) and configured to support the luminaire (10), (iii) a second side portion (165) protruding relative to the body (100) at a second side (160) of the body (100), and (iv) an engagement element (200) resiliently connected to the second side (160) of the body (100) and configured to clamp a part of the ceiling (500) between the engagement element (200) and the second side portion (165).

Abstract: The invention provides a lighting unit (10) comprising a first lighting device (100), a second lighting device (200), and a control unit (300) configured to control the lighting devices (100,200), wherein (a) the first lighting device (100) is configured to provide first lighting device light (101) having a first spectral distribution with at least two first emission maxima (EM11, EM12, . . . ) spaced by at least 75 nm, a first color point x1,y1 and a first correlated color temperature T1; (b) the second lighting device (200) is configured to provide second lighting device light (201) having a second spectral distribution with at least two emission maxima (EM21, EM22, . . .

Abstract: Disclosed is a luminaire (10) comprising a luminaire housing delimited by a light exit structure (20) engaging with an edge of a pliable container (30), wherein the container is structurally reinforced, i.e. rendered less pliable, by its engagement with the light exit structure; and at least one light engine (40) disposed within the luminaire housing. A method of manufacturing such a luminaire is also disclosed.

Abstract: The invention provides a lighting unit (10) comprising a first lighting device (100), a second lighting device (200), and a control unit (300) configured to control the lighting devices (100,200), wherein (a) the first lighting device (100) is configured to provide first lighting device light (101) having a first spectral distribution with at least two first emission maxima (EM11, EM12, . . . ) spaced by at least 75 nm, a first color point x1,y1 and a first correlated color temperature T1; (b) the second lighting device (200) is configured to provide second lighting device light (201) having a second spectral distribution with at least two emission maxima (EM21, EM22, . . .

Abstract: A light source assembly comprising: a solid state lighting device; a wavelength converting element arranged to receive light emitted by the solid state lighting device and adapted to convert some of the received light to a different wavelength; and a scattering layer applied to a light emitting surface of the wavelength converting element. The scattering layer is adapted to scatter light back to the wavelength converting element, and a backscattering strength of the scattering layer varies over said light emitting surface so as to reduce variations in the color of the light emitted from the light emitting surface.

Abstract: The invention provides a sheet-like light collector device comprising a light receiving side and a light exit side, and a plurality of curved structures of light guiding material comprising an organic dye configured to absorb at least part of the light of a light source and to convert at least part of the absorbed light into converted light in the visible wavelength range. Each curved structure has a convex curved part at the light receiving side, a concave part at the light exit side, and a light exit edge part at the light exit side. Each curved structure has a curvature and light guide thickness configured to facilitate transport of incoupled light and the visible converted light in the direction of the light exit edge part to provide device light escaping from the light exit edge part.

Abstract: The invention provides a sheet-like light collector device comprising a light receiving side and a light exit side, and a plurality of curved structures of light guiding material comprising an organic dye configured to absorb at least part of the light of a light source and to convert at least part of the absorbed light into converted light in the visible wavelength range. Each curved structure has a convex curved part at the light receiving side, a concave part at the light exit side, and a light exit edge part at the light exit side. Each curved structure has a curvature and light guide thickness configured to facilitate transport of incoupled light and the visible converted light in the direction of the light exit edge part to provide device light escaping from the light exit edge part.