Abstract: Luminaire with channels Kn, each have a light source and a collimator. Each channel produces a light cone having different opening angles. The channels form a sequence (Kn)n?1, . . . , N, the light cones having progressively greater or smaller opening angles ?n. The intensity ln(x) of the channels, controlled by a manipulated variable x by an actuator, are dependent on the manipulated variable and each follow a curve having a maximum and a rising edge and/or a falling edge. The curves of adjacent channels Kn?1, Kn, Kn+1 are shifted in relation to one another such that a reduction in the intensity of a channel, controlled by the actuator, is associated with an increase in the intensity of an adjacent channel Kn±1 and an increase in intensity of a channel, controlled by the actuator, is associated with a reduction in intensity of an adjacent channel Kn±1.

Abstract: A collimator (1) for collimating light uses a plurality of optical surfaces each forming optical boundary surfaces with a change in the optical density. The collimator (1) has a substantially flat light entry surface (2), a convex light exit surface (4) and a totally reflective side wall (3) connecting the light entry surface (2) to the light exit surface (4). A portable lighting device is provided having such a collimator. In order to provide a collimator and a portable lighting device having a collimator which achieves a better light distribution, the light exit surface of the collimator has light-refracting structures (5).

Abstract: The invention relates to an optical collimator for focusing light by means of a plurality of optical surfaces, which are designed as light entry surfaces and/or light exit surfaces and/or reflection surfaces, which form respective optical boundary surfaces with a change in the optical density. The aim of the invention is to propose a collimator by means of which homogeneous illumination is possible even if a plurality of light sources is used, the collimator having a compact design and being economical to produce. This aim is achieved, according to the invention, in that the collimator has a plurality of concave micro-lenses (3, 11), which are formed on at least one of the optical surfaces.

Abstract: A lighting device includes at least on LED light source, ca collimator, a first lenslet array of lenslets tessellated in an irregular pattern, and a second array of lenslets tessellated in the same irregular pattern as the first array of lenslets, such that each of the lenslets in the first array is aligned with a corresponding one of the lenslets in the second array. The first array further includes a plurality of transmissive planar facets covering an intersection between lenslet.

Abstract: A lighting device comprises a light source defining a central axis and comprising at least two mutually independently operable lighting elements. The lighting device further comprises a rotatable deflective member rotatably mounted about said axis, and a fixed deflective member fixedly mounted on said axis and comprising at least two mutually differently deflective portions which each are associated with a respective lighting element. The lighting device of the invention enables various operation modes, like light beam rotation can rotate, jumping of the light beam from one location to another by a sequence of switching on and off one or more of the at least two lighting elements, or in that it can be dimmed or boosted, for example dimmable in steps by a sequence of one by one switching off the lighting elements.

Abstract: An integrating lenslet arrangement (40) is disclosed including a first lenslet array (50) of lenslets (51) tessellated in an irregular pattern; and a second lenslet array (60) of further lenslets (51) tessellated in said irregular pattern, each further lenslet being aligned with one of said lenslets; wherein the first lenslet array further comprises a plurality of transmissive planar facets (55), each facet covering a lenslet intersection (53). An optical arrangement, lighting device and luminaire including such an integrating lenslet arrangement are also disclosed.

Abstract: The invention relates to an optical collimator for focusing light by means of a plurality of optical surfaces, which are designed as light entry surfaces and/or light exit surfaces and/or reflection surfaces, which form respective optical boundary surfaces with a change in the optical density. The aim of the invention is to propose a collimator by means of which homogeneous illumination is possible even if a plurality of light sources is used, the collimator having a compact design and being economical to produce. This aim is achieved, according to the invention, in that the collimator has a plurality of concave micro-lenses (3, 11), which are formed on at least one of the optical surfaces.

Abstract: The invention provides a collimator comprising a Fresnel lens comprising a refractive lens portion and a toothed total internal reflection portion. A light blocking element is at least between the lens portion and the light source. A portion of a light source output is blocked from reaching at least one region of the inner lens portion. At some or all parts of the lens portion, light does not reach those parts from the full area of the light source. This partial light blocking means the whole shape of the light source is not projected onto all of the lens portion, and the halo effect is reduced or eliminated.

Abstract: Disclosed is a lighting device (1) for generating a dynamically adjustable spotlight without moving parts. The lighting device comprises a planar array of individually addressable sets of light sources (11), each set comprising at least one light source, each of said light sources being arranged to produce a luminous distribution; a controller (20) arranged to individually address said sets of light sources; and an optical system (100) comprising a plurality of refractive lenses (110, 120, 130) common to the individually addressable light sources and arranged to shape the luminous distribution of each set of light sources into a spotlight (13) and project said spotlight in an angular direction that is a function of a position of said set in the array.

Abstract: Disclosed is a lens plate (10) comprising a plurality of polygonal aspherical lenslets (11) each defined around a Voronoi point (13), said polygonal lenslets combining to form a Voronoi tessellation, wherein each polygonal lenslet includes a rotationally symmetric portion (15) centered on its Voronoi point and an aspherical surface (21) with a continually decreasing curvature from the surface vertex (25) of said rotationally symmetrical portion towards its edges (17). Such a lens plate is capable of generates wide beam angles, e.g. beam angles in excess of 30° at FWHM of the beam with high optical efficiency. Also disclosed is an optical arrangement including such a lens plate, a lighting device including such an optical arrangement and an apparatus including such a lighting device.

Abstract: An optical output device comprises a plate having at least one surface formed as an array of tessellated lenses. The tessellated lenses comprise at least first and second regions of regular hexagonal lens tessellation, wherein the first and second regions are slanted with respect to each other. By removing full periodicity in this way, but maintaining localized periodicity, visible non-uniformities are reduced in both color and intensity. The optical output device does not need to be illuminated uniformly to generate an output without visible intensity or color edges.

Abstract: An optical output device comprises a plate having at least one surface formed as an array of tessellated lenses. The tessellated lenses comprise at least first and second regions of regular hexagonal lens tessellation, wherein the first and second regions are slanted with respect to each other. By removing full periodicity in this way, but maintaining localized periodicity, visible non-uniformities are reduced in both color and intensity. The optical output device does not need to be illuminated uniformly to generate an output without visible intensity or color edges.

Abstract: A dielectric collimator (1) comprising a center lens (3), the center lens comprising a light input surface (31) and a light exit surface (32), the light exit surface (32) being convex and substantially hemispherical, and the light input surface (31) comprising a central surface section (312) forming a light transmitting portion of the center lens adapted for receiving incoming light (5) and transmitting it to be emitted from the light exit surface, and a peripherally extending, annular outer surface section (311) being substantially plane and adapted for redirecting incoming light (5) in such a manner that the redirected light (7) undergoes TIR at the light exit surface and is emitted back out of the light input surface.

Abstract: A collimator (3) for a color over position light source (2) is provided. The collimator (3) comprises a focal point (F), an optical axis (OA) containing the focal point (F), an imaging element (4) arranged around or on the optical axis (OA) and several light spreading elements (5, 11, 12) ranged around the optical axis (OA) to receive at least one image from the imaging element (4). The light spreading elements (5, 11, 12) have different light beam widening characteristics, the light beam widening characteristics of each light spreading element (5, 11, 12) of said light spreading elements (5, 11, 12) depending on the position of the light spreading element (5, 11, 12) relative to the focal point (F). The light spreading elements (5, 11, 12) are adapted to spread light striking the light spreading elements (5, 11,12) in a first plane (M) including the optical axis (OA). A method for collimating light from a color over position light source (2) is also provided.

Abstract: A light funnel collimator has a central lens surface and a back reflecting surface, shaped to provide a wider background beam and a narrower hotspot beam within but off-center of the wider beam. One of the beams is on-axis of the collimator, and the other beam is off-axis. The reflector is at least partly asymmetrical relative to the axis, and provides or contributes to the off-axis beam.

Abstract: A solid state light emitter lighting assembly (100) and a luminaire are provided. The solid state light emitter assembly comprises a light exit window (110), a reflector (120?, 120?), a light guide (150?, 150?) and a solid state light emitter (160). The reflector reflect light towards the light exit window and has at least one edge (122?, 122?) bending towards the light exit window. The light guide receives light at a first end (152) and emits at a second end (154?, 15?) the guided light towards the reflector. The first end is arranged at a first side of the at least one edge. The first side is away from a reflecting surface (124) of the reflector. The solid state light emitter is also at the first side and emits light towards the first end of the light guide. A portion of the light that is reflected by the reflector is transmitted through the light guide through side surfaces of the light guide.

Abstract: Disclosed is a lighting device (1) for generating a dynamically adjustable spotlight without moving parts. The lighting device comprises a planar array of individually addressable sets of light sources (11), each set comprising at least one light source, each of said light sources being arranged to produce a luminous distribution; a controller (20) arranged to individually address said sets of light sources; and an optical system (100) 5 comprising a plurality of refractive lenses (110, 120, 130) common to the individually addressable light sources and arranged to shape the luminous distribution of each set of light sources into a spotlight (13) and project said spotlight in an angular direction that is a function of a position of said set in the array.

Abstract: The present disclosure relates to a color tunable lighting device comprising at least one light source (302), a symmetry axis (306) and an envelope (304). The at least one light source (302) is disposed on a base (301) extending within a plane and the envelope (304) is disposed at least above the base (301) and defines a cavity (305) extending along the symmetry axis (306). The at least one light source (302) is arranged at a distance X from the symmetry axis (306) along a radial direction relative to the symmetry axis. The plane is arranged to intersect the symmetry axis (306). The distance X may be at least 50% of a total distance between the symmetry axis (306) and an edge of the envelope (304), or a projection of the edge of the envelope (304) on the plane in which the base (301) extends, as seen along the radial direction. A curvature of the envelope (304) is monotonically increasing with an increasing distance from the base (301).

Abstract: The invention provides a collimator comprising a Fresnel lens comprising a refractive lens portion and a toothed total internal reflection portion. A light blocking element is at least between the lens portion and the light source. A portion of a light source output is blocked from reaching at least one region of the inner lens portion. At some or all parts of the lens portion, light does not reach those parts from the full area of the light source. This partial light blocking means the whole shape of the light source is not projected onto all of the lens portion, and the halo effect is reduced or eliminated.

Abstract: A dielectric collimator (1) comprising a center lens (3), the center lens comprising a light input surface (31) and a light exit surface (32), the light exit surface (32) being convex and substantially hemispherical, and the light input surface (31) comprising a central surface section (312) forming a light transmitting portion of the center lens adapted for receiving incoming light (5) and transmitting it to be emitted from the light exit surface, and a peripherally extending, annular outer surface section (311) being substantially plane and adapted for redirecting incoming light (5) in such a manner that the redirected light (7) undergoes TIR at the light exit surface and is emitted back out of the light input surface.