Abstract: Light-emitting devices (100) and methods for operating light-emitting devices are disclosed. Each of the light-emitting devices (100) comprises a plurality of light sources (112A-112F) for illuminating a target (120), wherein each of the light sources is configured to emit light within a predetermined color range. Each of the light-emitting devices comprises means (140) for automatically adjusting the spectral power distribution of light-emitted by the light-emitting device on basis of the color of the target or a region of the target illuminated by the light-emitting device, such that light emitted by the light-emitting device is made increasingly compliant or even compliant with a criteria of a predetermined color characteristics.

Abstract: The invention provides amongst others a light emitting tufted carpet with a primary backing layer permeable to light, an optional adhesive layer, a waveguide comprising a light out-coupling site, and an optional secondary backing layer. The primary backing layer is provided with tufts. The waveguide is arranged to couple light source light of a light source in as waveguide light, and arranged to couple waveguide light out at the waveguide light out-coupling site to provide carpet light. The waveguide light out-coupling site is below the primary backing layer.

Abstract: The present invention relates to a surgical lamp (100) comprising both a first light source (110) and a second light source (112), where the first light source is capable of emitting light across a broad first spectral range and the second light source being capable of emitting light having an emission peak in a narrow second spectral range. The surgical lamp further features a light source selecting device (120), capable of selectively turning on and off the first and the second light source. The first light source has a high color rendering index so as to enable objects, such as tissues, to appear in their true color, and the second light source has a low or non-definable color rendering index, so as enable accentuation of particular tissues.

Abstract: A light guide (11; 101; 111) comprising first and second oppositely arranged faces, an in-coupling portion (13a-f) for in-coupling of light from a light-source (12a-f; 95a-f; 102; 106a-c; 112a-f), and an out-coupling portion (15a-f; 103; 113a-f) located adjacent to the in-coupling portion (13a-f). The out-coupling portion (15a-f; 103; 113a-f) is configured to out-couple a primary light beam having a direction of propagation directed from a position in the in-coupling portion (13a-f) with a lower out-coupling efficiency than a secondary light beam having a direction of propagation directed from a position in the light guide (11; 101; 111) outside the in-coupling portion (13a-f). In this manner, a good mixing of light in the light guide can be achieved without imposing any particular requirements on the collimation of the in-coupled light.

Abstract: It is provided a luminaire kit of parts (100) for assembling a luminaire. The luminaire kit of parts (100) comprises light sources (107a-b) and light out-coupling devices (105a-b), The luminaire kit of parts (100) further comprises a light guiding element (101), the light guiding element (101) being configured to receive at least a subset of the light sources (107a-b) and at least a subset of the light out-coupling devices (105a-b) into a first type of 5 openings (103a-c) and a second type of openings (104a-b) respectively. It is also provided a method for assembling a luminaire.

Abstract: A multi-view display device comprises a pixellated display panel and a backlight comprising an arrangement of light sources (30), wherein each light source, when turned on, illuminates an associated region of pixels of the display panel. A display controller is adapted to control the pixellated display panel and the arrangement of light sources such that a partial display output is provided comprising simultaneously a set of at least three 2D views with no repetition of individual 2D views. This arrangement provides an output with controlled illumination direction of the pixels so that view repetitions are avoided. The output can be a single cone of views, and the location from which the cone of views can be viewed depends on the relationship between the light sources of the backlight which are activated and the display panel.

Abstract: The invention relates to an illumination device (10) for illuminating a surface, with a lighting element (20) and an illuminating body (30), wherein the lighting element (20) emits an artificial light (21,21?), a housing element (40) comprises the lighting element (20) and supports the illuminating body (30), the illuminating body (30) comprises a transparent light conductive material and is generally overlying the surface, being illuminated. The invention discloses, that the illuminating body (30) comprises a light extraction layer (50), configured to receive and to deflect the artificial light (21,21?) from the lighting element (20) onto the surface.

Abstract: The present invention relates to a method for providing an ambience light effect in a cinema comprising a cinema display screen arranged on a front wall of the cinema and a plurality of light sources, comprising receiving first and second image content to be sequentially displayed on the cinema display screen, determining at least one of a color and intensity for the second image content, determining a second set of control data for controlling the plurality of light sources to emit an ambient light effect based on at least one of the color and intensity for the second image content, and associating the second set of control data with the first set of image content. Advantages with the invention include the possibility to provide an improved ambient lighting experience by using the “extra space” specifically available in a cinema, e.g. walls, floor and ceiling.

Abstract: The invention relates to a light source and an illumination system. The light source (10) comprises a light emitter (20) and a light conversion element (30). The light emitter emits visible light of a first color through the light conversion element in a direction away from the light source. The light conversion element comprises a photoluminescent material (40) for converting at least a part of the light of the first color into light of a second color different from the first color. The light source further comprises conversion material (42) for converting at least a part of ambient light impinging on the conversion material into light of a third color (Ba) different from the second color. When the light emitter emits light, the color of the light emitted is mainly a mixture of the light of the first color and light of the second color.

Abstract: The present invention provides a lighting device, comprising a first light guide adapted to guide light and output the light in a first direction; a second light guide adapted to guide light and output the light in another, second direction; a dividing structure adapted to receive light from a light source and guide the light into the first light guide and into the second light guide, wherein the dividing structure comprises controllable dividing means for guiding a first percentage of the light from the light source into the first light guide, and a second percentage of the light from the light source into the second light guide.

Abstract: The invention provides an adjuster for adjusting the direction of a light beam (5). The adjuster (1) has an off-state and an on-state and comprises a stack (10) of layers. The stack (10) comprises a first solid material layer (100) having a first optic axis (111), a second solid material layer (200) having a second optic axis (211), and switchable birefringent material (30). Further, the stack includes a first interface (130) between the first solid material layer (100) and birefringent material (30) and a second interface (230) between the second solid material layer (200) and birefringent material (30). In the off-state, the birefringent material (30) at the first interface (130) is configured to have an optic axis parallel to the first optic axis (111) and the birefringent material (30) at the second interface (230) is configured to have an optic axis parallel to the second optic axis (211).

Abstract: A beam steering device (300) for deflecting a beam of light is provided. The beam steering device comprises a first deflecting member (310), a rotating member (320), and a second deflecting member (330). For an incoming beam of light having components (303, 302) with their polarization parallel (303?) and perpendicular (302?), respectively, to an optic axis (314, 334) of the beam steering device, the parallel component (303) is deflected by a first angle (304) when passing the first deflecting member. When passing the rotating member, the polarization (303?, 302?) of the beam of light is rotated by 90 degrees (303?, 302?). When passing the second deflecting member, the perpendicular component (302) is deflected by a second angle (305).

Abstract: The invention relates to a light-guide (100), an illumination system (200), a luminaire (400), a scanning backlight system (200) and a display device. The light-guide comprises a plurality of light-guide segments (10), each light-guide segment being substantially optically separated from a neighboring light-guide segment. Each light-guide segment comprises light-extraction means (40) for extracting at least part of the distributed light via a front wall (20) to illuminate in operation a light output window (220). A distance (D) between the front wall and the light output window being smaller at a center (C) of the front wall compared to a predefined edge (50) of the front wall. The predefined edge of the front wall is an edge at which the light-guide segment is arranged adjacent to the neighboring light-guide segment.

Abstract: An autostereoscopic display device includes a reflection layer for reflecting at least a portion of incident light, a polarization conversion layer arranged over the reflection layer, and an array of lenticular elements arranged over at least a portion of the polarization conversion layer and including a birefringent material. Light having a first state of polarization is configured to pass through the lenticular element array without substantial lenticular element focusing, where the polarization state is transformed by the polarization conversion layer such that the reflected light has a second state of polarization. Light having the second polarization state passes through the lenticular element array with the lenticular element focusing to provide multiple views to different viewing locations.

Abstract: The invention provides a floor covering system (10) with (a) a PVC-based floor covering (100) and (b) a lighting system (200) arranged to generate light (210). The PVC-based floor covering (100) has a user side (101) and an opposite back side (102). The lighting system (200) is arranged at the back side (102) of the PVC-based floor covering (100). The PVC-based floor covering (100) has a light transmission for light (210) generated by the lighting system (200) in the range of 0.5% to 30%, especially in the range of 1% to 20%.

Abstract: It is presented an optical component (5) a first side (30) and a refractive opposite side (14). The refractive side (14) presents a refractive surface (13) and has radially extending refractive structures (6) for refracting light mainly in the azimuth direction (27) of an inciding light beam. The optical component (5) can be used as an exit window in a luminaire (1) having at least one light source (4), whereby light inhomogeneity may be reduced.

Abstract: The invention describes a light sensor (1) comprising a filter arrangement (11), which filter arrangement (11) comprises a number of spectral filters (F1, F2, . . . , Fn) for filtering incident light (L), wherein a spectral filter (F1, F2, . . . , Fn) is realized to pass a distinct component of the incident light (L), an aperture arrangement (12) for admitting a fraction of the incident light (L), and a sensor arrangement (13) realized to collect the admitted filtered light (L?), which sensor arrangement (13) comprises an array of sensor elements (130) for generating image-related signals (S, S1, S2, . . . , Sn) and which sensor array is sub-divided into a number of regions (R1, R2, . . . , Rn), wherein a region (R1, R2, . . . , Rn) of the sensor array is allocated to a corresponding spectral filter (Fi, F2, . . . , Fn) such that an image-related signal (S) generated by a sensor element (130) of a particular region (R1, R2, . . .

Abstract: The invention relates to a lighting system comprising: -a light source (1) to emit light; -a transparent first optical element (3) comprising at least one bounded space (5) filled with blue phase mode liquid crystal material, wherein at least a part of the emitted light successively passes a first boundary surface (6) and a second boundary surface (7) of the bounded space, said first boundary surface being unparallel to said second boundary surface; and—electric means (9-12) to apply an electric field to the bounded space substantially parallel to a direction of the emitted light incident on the first boundary surface of the at least one bounded space.

Abstract: The invention provides a multi-beam illumination system (1) for providing an illumination image (53). The multi-beam illumination system (1) has a plurality of light sources (11) with optional collimating optics (12), arranged to generate a plurality of light beams (13); a panel (30) comprising a plurality of panel segments (32) in a panel plane (35) at a first distance (d1) and arranged to contain a plurality of segment patterns (34) on the corresponding panel segments (32); and an imaging lens array (40) comprising a plurality of imaging lenses (42) in an imaging lens plane (45) parallel to the panel plane (35). Each imaging lens (42) of the imaging lens array (40) is arranged to image a corresponding segment pattern (34) of the plurality of segment patterns (34) into a respective projection image (52) of a plurality of projection images (52). The plurality of projection images (52) over-lap at a predetermined image distance (Lp) and form the illumination image (53).

Abstract: A switchable autostereoscopic display device comprises a display panel having an array of display pixels for producing a display, the display pixels being arranged in rows and columns, and a lens arrangement for directing the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed, the lens arrangement being in a plane parallel to the display panel. The lens arrangement comprises an electrically switchable LC layer which defines a lens pattern or a lens replica pattern, wherein the LC alignment of the LC layer is electrically switchable such that the lens arrangement is switchable between a 2D mode and a 3D mode. In the 2D mode, the LC alignment is in a first direction substantially within the plane of the lens arrangement, and in the 3D mode the LC alignment is in a second, perpendicular direction also substantially within the plane of the lens arrangement. The light output of the display panel is polarized in the second direction.