Abstract: An optical measurement method using an optical sensor apparatus (15), the optical sensor apparatus comprising an optical element (20) comprising a mark (22) configured to selectively transmit incident radiation (24), a photodetector (26) configured to receive radiation transmitted by the mark and provide an output signal that is indicative of the received radiation, and a support (30) which supports the optical element and is in thermal contact with the optical element. A thermal conductivity of the support is greater than a thermal conductivity of the optical element and a coefficient of thermal expansion of the support is greater than a coefficient of thermal expansion of the optical element. The method comprises performing a first measurement using the optical sensor apparatus, the first measurement including illuminating the mark with radiation. The temperature of the optical element changes during the first measurement.

Abstract: This invention relates to an ambience lighting system for a display device for emitting an ambience light onto a wall behind the display device. Light sources are placed at the rear side of the display device along with a reflector, where the internal arrangement of the light sources and the reflector is such that when the display device is placed in proximity to the wall the light emitted by the at least one light source becomes reflected by the reflector towards the wall such that the reflected light at least partly peripherally surrounds the viewing area of the display device.

Abstract: The invention relates to a display apparatus with a display unit, having means for background lighting at the back of the display apparatus. According to the invention, the means for background lighting comprise two illumination units being provided at the right-hand and left-hand of the display apparatus, said illumination units being formed as substantially vertically positioned, longitudinal light guides comprising means for coupling out light, each of the light guides being provided on at least one of its ends with a light source. The light sources preferably comprise colored LEDs.

Abstract: An apparatus for audio, video and/or data recording and/or reproducing includes a cabinet. The cabinet is provided with a front and a side. In order to get the impression of a slim device the side is provided with an optically reflecting surface.

Abstract: The invention relates to a light projection system (10) for use in conjunction with a display device (40). The light projection system comprises a light source for emitting light being modulated by video and/or audio content of the display device (40), and a light guide (20). The longitudinal light guide guides light emitted by the light source substantially along a longitudinal axis (26) and projects the light propagating through the longitudinal light guide on a projection surface (50). The longitudinal light guide comprises: a light input window, and a plurality of light out-coupling elements. The plurality of light out-coupling elements project the light on the projection surface via light out-coupling elements comprising sub-sets (70a, 70d) of light out-coupling elements. A particular sub-set (70a, 70d) is arranged for substantially illuminating a particular area (50a, 50d) of the projection surface (50).

Abstract: The invention relates to a display apparatus with a display unit, having means for background lighting at the back of the display apparatus. According to the invention, the means for background lighting comprise two illumination units being provided at the right-hand and left-hand of the display apparatus, said illumination units being formed as substantially vertically positioned, longitudinal light guides comprising means for coupling out light, each of the light guides being provided on at least one of its ends with a light source. The light sources preferably comprise coloured LEDs.

Abstract: A light guide system (20) for controlling out-coupling of light is provided. The light guide system comprises a light guide (21) configured to receive ambient light from at least one light source (26), and emit spread ambient light from a surface thereon. The light guide system further comprises a reflector (22) provided with a number of protrusions (23). In use, the reflector (22) and the light guide (21) are attached together. An advantage of this embodiment is that a uniform light -radiating surface using a light guide is enabled.

Abstract: This invention relates to an ambience lighting system for a display device for emitting an ambience light onto a wall behind the display device. Light sources are placed at the rear side of the display device along with a reflector, where the internal arrangement of the light sources and the reflector is such that when the display device is placed in proximity to the wall the light emitted by the at least one light source becomes reflected by the reflector towards the wall such that the reflected light at least partly peripherally surrounds the viewing area of the display device.

Abstract: This invention relates to a light guide (100). A first light guide portion (101) extending at least partly along the light guide is provided from conducting an incoming light along the first light guide portion. A second light guide portion (102) having a light out coupling structure is provided for coupling out an incoming light from the first light guide portion. The first and the second light guide portions are separated by a light separation structure (103), where the amount of light conducted from the first light guide portion towards the second light guide portion is determined by the thickness of the light separation structure.

Abstract: The invention relates to a display apparatus with a display unit, having means for background lighting at the back of the display apparatus. According to the invention, the means for background lighting comprise two illumination units being provided at the right-hand and left-hand of the display apparatus, said illumination units being formed as substantially vertically positioned, longitudinal light guides comprising means for coupling out light, each of the light guides being provided on at least one of its ends with a light source. The light sources preferably comprise coloured LEDs.

Abstract: A display system (20, 100, 300, 320) is provided for presenting images to a viewer (50) together with complementary peripheral surround-lighting (130). The system (20, 100, 300, 320) includes a monitor (20) for presenting the images to the viewer (50), and lights (100) for generating the surround-lighting (130) appearing in operation to the viewer (50) as at least partially peripherally surrounding the monitor (20). Moreover, the system (20, 100, 300, 320) further includes a controller (320) for energizing the lights (100) in response to properties of portions of the images presented on the monitor (20), and a sensor (300, 310) for sensing the surround-lighting (130) and/or environmental illumination and generating corresponding sensor signals (330). The controller (320) is arranged in operation to receive the sensor signals (330) for controlling the lights (100) for at least partially compensating the surround-lighting (130) to influence from the environmental illumination.

Abstract: The invention relates to a compensating light guide (10) for guiding visible light (20) from a light source (100). The light guide has a first transmission region (1TR), where light is guided from the light source along a first optical path (1OP), and a second transmission region (2TR), where light is guided from the light source along a second optical path (2OP). The light guided along the second optical path has a larger absorption in a first sub band resulting in an absorption difference between the first and the second optical path. The first (1TR) and second (2TR) transmission regions are optically arranged to transmit light so as to relatively reduce a second sub band of the first spectral distribution. The relative reduction between the first (1TR) and second (2TR) transmission regions is proportionated so as to psycho-visually compensate the absorption difference in the light guide (10) resulting in a uniform color emitted from the light guide (10) as perceived by a viewer (200).

Abstract: The invention relates to a light projection system (10) for use in conjunction with a display device (40). The light projection system comprises a light source for emitting light being modulated by video and/or audio content of the display device (40), and a light guide (20). The longitudinal light guide guides light emitted by the light source substantially along a longitudinal axis (26) and projects the light propagating through the longitudinal light guide on a projection surface (50). The longitudinal light guide comprises: a light input window, and a plurality of light out-coupling elements. The plurality of light out-coupling elements project the light on the projection surface via light out-coupling elements comprising sub-sets (70a, 70d) of light out-coupling elements. A particular sub-set (70a, 70d) is arranged for substantially illuminating a particular area (50a, 50d) of the projection surface (50).

Abstract: A display system (20, 100, 300, 320) is provided for presenting images to a viewer (50) together with complementary peripheral surround-lighting (130). The system (20, 100, 300, 320) includes a monitor (20) for presenting the images to the viewer (50), and lights (100) for generating the surround-lighting (130) appearing in operation to the viewer (50) as at least partially peripherally surrounding the monitor (20). Moreover, the system (20, 100, 300, 320) further includes a controller (320) for energizing the lights (100) in response to properties of portions of the images presented on the monitor (20), and a sensor (300, 310) for sensing the surround-lighting (130) and/or environmental illumination and generating corresponding sensor signals (330). The controller (320) is arranged in operation to receive the sensor signals (330) for controlling the lights (100) for at least partially compensating the surround-lighting (130) to influence from the environmental illumination.

Abstract: A structure (1) hides a cable (2) running along a surface (3). The structure (1) comprises a wall (10, 11; 12, 13, 14) arranged between a viewer (4) and the cable (2) for hiding the cable (2) for the viewer (4). The structure has a wall surface directed towards the viewer (4). At least part of the wall surface directed towards the viewer (4) has reflective properties. The wall (10, 11; 12, 13, 14) has a shape for reflecting the surface (3) or another surface (30) having similar appearance as the surface (3) to the viewer (4), thereby giving the structure which hides the cable a similar appearance as the surface in front of which the cable is arranged.