Abstract: A light emitting device comprises a substrate (61) and an arrangement of light emitting elements (62) provided over the substrate. The substrate has a contoured surface which defines at least first and second regions (60a, 60b, 60c), having normal directions which face in different directions. The light emitting elements (62) comprise directional light emitting elements, and are provided on the first and second regions (60b, 60c), thereby to define first and second light emission directions. This arrangement provides light source elements on a structured (topographically non-flat) substrate in a device, such that the angular distribution of light emitted by the device can be electronically adapted by controlling the light emission per light-emitting area.

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 an imaging arrangement for directing the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed. The imaging arrangement is electrically switchable between at least three modes comprising a 2D mode and two 3D modes. The imaging arrangement comprises an electrically configurable graded index lens array. The display can be switched between a number of modes to enable the display to be adapted or to adapt itself to the image content to be displayed and/or the display device orientation.

Abstract: A method and device for generating and/or displaying 3D images include temporarily increasing the depth of content of an image or a part of an image to a high level and afterward the depth of content is decreased to a low level. This temporary increase of the depth of content renders a large 3D effect to the image or the part of the image to which it has been applied. The actual average depth of content can be made relatively low thus reducing fatigue, while the perceived depth of content is relatively high.

Abstract: A multi view display comprising a light emitting element having an optical cavity formed by a first and a second reflecting layer, at least said second reflecting layer being semi-transparent, and a light emitting layer arranged between said reflecting layers, wherein said optical cavity is designed so that light emitted in at least two preferred viewing directions has a higher intensity than light emitted in other directions. The invention is based on interference phenomena in the optical cavity, making it possible to realize a light emitting element that intrinsically emits more light in the preferential viewing directions than in other directions. This emission profile makes the light emitting element very useful in a multi view display, reducing the problems of cross talk.

Abstract: A multi view display comprising a light emitting element having an optical cavity formed by a first and a second reflecting layer, at least said second reflecting layer being semi-transparent, and a light emitting layer arranged between said reflecting layers, wherein said optical cavity is designed so that light emitted in at least two preferred viewing directions has a higher intensity than light emitted in other directions. The invention is based on interference phenomena in the optical cavity, making it possible to realize a light emitting element that intrinsically emits more light in the preferential viewing directions than in other directions. This emission profile makes the light emitting element very useful in a multi view display, reducing the problems of cross talk.

Abstract: In a method and device for generating and/or displaying 3D images the depth of content (d) of an image or a part of an image is temporarily increased to a high level (h) where after the depth of content is decreased to a low level (1). This temporary increase of the depth of content renders a large 3D effect to the image or the part of the image to which it has been applied. It has been found that this enhancement effect of an increased 3D effect lingers on in the perception of the viewer even after application. The actual average depth of content can be made relatively low thus reducing fatigue, while the perceived depth of content is relatively high.

Abstract: A projection television receiver is given 3-dimensional functionality by mounting a lenticular array of substantially vertically arranged cylindrical lenses in front of the display screen. The position of this lenticular array is critical to the performance of the 3-D functionality. In order to correct for misalignment, the lenticular array is equipped with a photo-sensor on the side facing the display. The display is then controlled to selectively energize the pixels such that the actual position of the lenticular array can be determined. The displayed image is then shifted based on the measurement such that the user will see an optimal 3-D image quality.

Abstract: The invention relates to the detection of the position of a projection of an electromagnetic beam on a surface such as a laser pointer projection on a display screen. It is suggested to measure intensities of the electromagnetic radiation from the beam projection at three or more different positions at the borders of the surface and to process the measured intensities for determining the centre position of the electromagnetic beam projection on the surface. The intensities may be measured applying only a few low cost receivers.

Abstract: A light emitting device comprises a substrate (61) and an arrangement of light emitting elements (62) provided over the substrate. The substrate has a contoured surface which defines at least first and second regions (60a, 60b, 60c), having normal directions which face in different directions. The light emitting elements (62) comprise directional light emitting elements, and are provided on the first and second regions (60b, 60c), thereby to define first and second light emission directions. This arrangement provides light source elements on a structured (topographically non-flat) substrate in a device, such that the angular distribution of light emitted by the device can be electronically adapted by controlling the light emission per light-emitting area.

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 an imaging arrangement for directing the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed. The imaging arrangement is electrically switchable between at least three modes comprising a 2D mode and two 3D modes. The imaging arrangement comprises an electrically configurable graded index lens array. The display can be switched between a number of modes to enable the display to be adapted or to adapt itself to the image content to be displayed and/or the display device orientation.

Abstract: A configurable multi-view display device (100) is disclosed. The multi-view display device (100) comprises: a structure (104) of light modulating elements (105-108) being located in a first plane, which are arranged to provide respective light beams to; optical directory means (110) being located in a second plane which is substantially parallel to the first plane, for directing the respective light beams into one or more predetermined directions relative to the first plane, depending on an actual view configuration of the multi-view display device; and optical configuration means (120) for optically setting the multi-view display device in the actual view configuration, by means of the structure (104) of light modulating elements (105-108).

Abstract: An apparatus comprising a first cell (10b), said first cell comprising a plurality of first elements (34b), said first elements being controllable between a non-reflective state, in which electromagnetic radiation having a first polarization is reflected to a first extent, and a reflective state, in which said electromagnetic radiation having a first polarization is reflected to a second extent, said second extent being greater than said first extent. Said apparatus further comprises a second cell (10a), superimposed on the first cell, said second cell comprising a plurality of second elements (34a), said second elements being controllable between a non-reflective state, in which electromagnetic radiation having a second polarization is reflected to a third extent, and a reflective state, in which said electromagnetic radiation having a second polarization is reflected to a fourth extent, said fourth extent being greater than said third extent.

Abstract: A reflective color filter includes: a first domain reflecting visible red colored light at substantially normal angles of incidence; a second domain reflecting invisible infrared colored light at substantially normal angles of incidence and reflecting red colored light at an oblique angle of incidence, greater than zero degrees; a third domain reflecting green red colored light at substantially normal angles of incidence; and a fourth domain reflecting blue colored light at substantially normal angles of incidence. In one configuration, the second domain overlies or underlies the first domain, but not the third or fourth domains. The reflective color filter can be used in a color liquid crystal display device.

Abstract: A reflective filter structure (30) adapted to reproduce color by reflection, which filter structure comprises a first domain (31) reflecting visible red color at zero angle of incidence, as well as a second domain (34) reflecting invisible infrared color at zero angle of incidence. Furthermore, the second domain is adapted to reflect visible red color at a predetermined angle of incidence greater than zero. The invention also relates to a display device based on the reflective filter structure.

Abstract: Three electrodes (8, 9, 10) per pixel are used instead of the conventional two. In this way, a change of the orientation of LC molecules (3) can be regulated at will so as to obtain faster switching.

Abstract: A reflective filter structure (30) adapted to reproduce color by reflection, which filter structure comprises a first domain (31) reflecting visible red color at zero angle of incidence, as well as a second domain (34) reflecting invisible infrared color at zero angle of incidence. Furthermore, the second domain is adapted to reflect visible red color at a predetermined angle of incidence greater than zero. The invention also relates to a display device based on the reflective filter structure.