Abstract: A display or lighting element comprising at least one pixel element for producing or controlling light is provided. The pixel element has a light emitting surface. The display or lighting element furthermore includes a substantially transparent material above at least the light emitting surface. The substantially transparent material above the light emitting surface has a modified roughness so as to decrease the reflectivity of the substantially transparent material above the light emitting surface.

Abstract: A method and system are described for adjusting displaying of images to be displayed on a display system. The method is suitable for display systems comprising at least one hardware feature (f1, f2, f3) influencing the display uniformity of the displaying of images, such as e.g. a defect pixel, seams, variations in positions of hardware components, etc. The method comprises obtaining pixelated image information to be displayed on a display system (100), and adjusting the displaying thereof by applying a distributed variation correction signal to the displaying of the pixelated image information. Such a distributed variation correction signal thereby takes into account the at least one hardware feature (f1, f2, f3) of said display system (100) so as to influence the perception of the display uniformity.

Abstract: The present invention relates to a light emitting device assembly. Such a LED assembly comprises a plurality of lamp-type light emitting devices, each of said lamp-type light emitting devices having a light output side and side walls. The plurality of lamp-type light emitting devices are directly or indirectly connected to each other via said side walls. The latter allows to obtain a compact LED assembly with high brightness.

Abstract: A display panel with improved reflectivity A display or lighting element comprising at least one pixel element for producing or controlling light is provided. The pixel element has a light emitting surface. The display or lighting element furthermore includes a substantially transparent material above at least the light emitting surface. The substantially transparent material above the light emitting surface has a modified roughness so as to decrease the reflectivity of the substantially transparent material above the light emitting surface.

Abstract: An improved architecture for a projector comprising a light source in the form of a lamp with a curved reflector with a distinctive focal distance for converging the light beam of the lamp; a so called cold mirror; an integration rod; a relay optics system consisting of a plurality of lenses followed by a light valve, wherein the architecture allows for the use of light sources with different focal distances.

Abstract: A device for coupling the light of multiple light sources (2, 3) that substantially consists of a reflectance surface (10, 11) for one or more of said light sources (2, 3) and at least one integration rod (14) having an incident surface (15), whereby the reflectance surfaces (10, 11) are positioned in light bundles (12) emitted by the light sources (2, 3) between said light sources (2, 3) and said integration rod (14); whereby the spot of each light source (2, 3) at its focal point has a surface that is smaller than the surface of said incident surface (15); and whereby said light bundles (12) enter the integration rod (14) at different parts of its incident surface (15).

Abstract: A prism assembly for use in optical devices, which includes a total internal reflection (TIR) assembly for redirecting an incoming lightbeam, a color prism assembly for splitting the incoming lightbeam into spectral bands, and at least one reflection light valve for redirecting and recombining the spectral bands to form an outgoing lightbeam, wherein the total internal reflection assembly has a back surface and said color prism assembly has a frontal surface facing said back surface and being parallel therewith, and wherein said back surface forms an angle with a general plane defined by the incoming and the outgoing lightbeams, which is different from 90°.

Abstract: A method for controlling a lighting device that consists of at least a lighting source, a color sequential device and a single light valve consisting of an array of light processing elements that are controlled by bits, the method comprising the steps of emitting a light beam with said light source, filtering said light beam by said color sequential device to achieve a colored light beam and processing said colored light beam with a bit depth of less than 16.

Abstract: The present invention relates to a light integrating device (10) comprising a solid light integrating device (1) with a first length (L1) and with coupled in abutment thereto by an optical coupling a hollow light integrating device (2) such that the light integrating device (10) has a second length (L2) larger than the first length (L1). The difference between the second length and the first length is in the range of 5 mm to 10 mm. No obstructions such as dirt or dust can attach to the end surface of the light integrating system (10) because the end surface is formed by a virtual surface, i.e. a surface which is not physically present. The light integrating system (10) according to the present invention may be used in projection systems, in lighting systems or in illumination systems. The present invention furthermore provides a method for generating a shaped and uniform light spot.

Abstract: An optical system as subject of the present invention comprises at least one packaged spatial light modulator comprising a front side for facing incident light. The optical system further comprises projection optics for projecting an image formed by the packaged spatial light modulator, there being a sealed gas space in between the front side of the packaged spatial light modulator. The optical system comprises a first heat transporting means being thermally coupled to the frontside of the packaged spatial light modulator, the first heat transporting means comprising a thermally conductive frame contacting the front side of the packaged spatial light modulator along an edge thereof. A second heat transporting means being thermally coupled to the package back side may be provided as well. The first and second heat transporting means are thermally separated by the package.

Abstract: The present invention provides a display board (30) comprising an array of light emitting elements (31), a driving means (32) for driving the light emitting elements (31) with image data, and an aging determination means (33). The aging determination means (33) comprises one or more light emitting elements for emitting light representative of the light emitted by the light emitting elements (31) of the display board (30), and at least one reference light emitting element (35) which, during use of the display board (30) is not driven. At the time of an intermediate calibration, the at least one reference light emitting element (35) is driven with calibration data and the light emitted by the reference light emitting element (35) is measured, as well as light representative of the light emitted by the light emitting elements.

Abstract: Digital video projection device comprising a light source (3) to produce an image building light beam (7), one or more lenses (4), a light valve (5) and a colour wheel (6), characterized in that means are provided for altering the relative position of the colour wheel (6) in view of the path of said light beam (7), between at least a first position wherein the colour wheel (6) interferes with the image building light beam (7) and a second position wherein it does not interfere with said light beam (7), such that the device can be switched between two operation modes, in particular a video mode wherein the colour wheel (6) is positioned in the path of said light beam (7) and a light mode, wherein the colour wheel is positioned in the second position and does not interfere with said light beam (7).

Abstract: A device for coupling the light of multiple light sources (2, 3) that substantially consists of a reflectance surface (10, 11) for one or more of said light sources (2, 3) and at least one integration rod (14) having an incident surface (15), whereby the reflectance surfaces (10, 11) are positioned in light bundles (12) emitted by the light sources (2, 3) between said light sources (2, 3) and said integration rod (14); whereby the spot of each light source (2, 3) at its focal point has a surface that is smaller than the surface of said incident surface (15); and whereby said light bundles (12) enter the integration rod (14) at different parts of its incident surface (15).

Abstract: A light projection device at least comprising a light source and a light valve consisting of an array of light processing elements, wherein a lens unit is provided in between the light source and the concerned light valve.

Abstract: A light valve meant to be used in a lighting device, comprising an array of light processing elements that are arranged in an outline substantially corresponding to the overall contour of an image to be built.

Abstract: An imaging device comprising a direct current short arc metal halide lamp and at least one reflective light valve.

Abstract: An improved single light valve projection device comprising: a metal halide lamp which is driven by a direct current (DC); a relay-optic, consisting of an optical assembly; a single light valve element; a rotating color wheel which is positioned in between said metal halide lamp and the relay-optic and which color wheel contains at least two different color filters; means for realizing at regular time intervals a boost of the current through the metal halide lamp and means for synchronizing the rotational speed of said color wheel, with the sequence of generating the different color components by the light valve element, such that the passing of a specific color filter between said metal halide lamp and said relay-optic coincides with said boost of the current through the metal halide lamp and with the projection of the corresponding image component by the light valve element.

Abstract: A method for controlling a lighting device that consists of at least a lighting source, a color sequential device and a single light valve consisting of an array of light processing elements that are controlled by bits, the method comprising the steps of emitting a light beam with said light source, filtering said light beam by said color sequential device to achieve a colored light beam and processing said colored light beam with a bit depth of less than 16.

Abstract: A method for displaying images on a display device. The display device includes a general processing unit, a display having several display units and an individual processing unit per display unit. In order to display the images, data concerning the image to be displayed are transmitted from the general processing unit to the individual processing units in the form of a data stream, in that there is a control communication between the general processing unit and each of the individual processing units in the form of control signals. The data from the data stream are collected at every individual processing unit as a function of the control signals transmitted to the individual processing units.

Abstract: An improved single light valve projection device comprising a metal halide lamp which driven by alternating current (AC); a relay-optic, consisting of an optical assembly; a single light valve element; a rotating color wheel which is positioned in between said metal halide lamp and the relay-optic and which color wheel contains at least two different color filters; and means for synchronizing the rotational speed of said color wheel, with the frequency of the alternating drive current of said metal halide lamp and with the sequence of generating the single color components by the light valve element.