摘要:
Various embodiments related to a multi-section light guide and computing devices comprising a plurality of wedge light guides are disclosed. For example, one disclosed embodiment comprises a multi-section light guide having a monolithic wedge-shaped body comprising a plurality of logical light guide sections. Each logical light guides section is configured to direct light via total internal reflection between a first light input/output interface located at a first end of the logical light guide section and a second light input/output interface located at a major face of the logical light guide section.
摘要:
This invention relates to a light guide plate and methods of manufacture. The light guide plate is suitable for use in a range of applications, particularly those which require backlighting for display units, for example, liquid crystal displays. The light guide plate comprises a combination of light guide layers and one or more scattering features.
摘要:
Illuminating light (B2, B3) for a liquid crystal on silicon (LCOS) micro-display (210) is provided by an illuminating unit (100). The illuminating unit (100) comprises a waveguiding substrate (7) and a plurality of light out-coupling features (F 30 ). The substrate (7) has two substantially parallel surfaces (41,42). Light coupled into said substrate (7) is reflected several times on the surfaces (41,42) of the substrate (7) by total internal reflection (TIR)before being coupled out of the substrate (7). Thus a portion (102) of said substrate (7) may act as an optical integrator for smoothing out variations in spatial intensity distribution of light propagating within said substrate (7). The out-coupling efficiencies of the out-coupling features (F 30 ) may be selected to minimize vignetting and/or to minimize stray light effects.
摘要:
A projection display (40) includes first and second waveguide elements (42) and (44), wherein the first waveguide element (42) has a two input regions for injecting image bearing light into the first waveguide element (42). In this manner, the total field of view of the image to be displayed at the second waveguide element (44) is divided into two sub-images prior to injection of one sub-image into one input region and the other sub-image into the other input region of the first waveguide element (42). This results in a smaller first waveguide element (42), thereby reducing obscuration of an observers view of a forward scene over which to the image to be displayed is overlaid.
摘要:
This invention relates to a light guide device and methods of manufacture. The light guide device is suitable for use in a range of applications, particularly in connection with the backlighting of displays, for example, liquid crystal displays. The light guide device comprises a combination of guide layers and one or more scattering structures in order to mask the appearance of one or more light sources.
摘要:
The invention relates to an arrangement comprising a semiconductor chip (1) which is designed to emit light during operation as well as a cover layer (2) that lies across from a light-emitting surface of the semiconductor chip (1) such that light emitted by the semiconductor chip (1) penetrates into the cover layer (2). According to the invention, said arrangement is characterized in that a light-deflecting structure is provided in an area of the cover layer (2) that overlaps the chip (1). Said light-deflecting structure deflects the light that penetrates into the cover layer (2) in the direction of the longitudinal extension of the cover layer (2). Furthermore, the coating (2) acts as an optical waveguide and is designed to emit the light in a distributed manner across the top surface of the cover layer (2).
摘要:
Disclosed is a display unit (1) for the binocular representation of a multicolor image, comprising a single imaging element (2), by means of which the multicolor image that is to be represented can be generated, and a projection lens system that is provided with a collimation lens (4) and a transparent substrate (6) which is located behind the collimation lens and encompasses a diffractive injection element (8) and a first and second diffractive extraction element (10, 11) arranged at a distance from each other. Said display unit (1) further comprises a control unit (12) for triggering the imaging element (2), a first beam path (13) which extends from the imaging element (2) to the first extraction element (10) via the collimation lens (4) and the injection element (8) through the substrate (6), and via the first extraction element (10) out of the substrate (6), and a second beam path (14) that extends from the imaging element (2) to the second extraction element (11) via the collimation lens (4) and the injection element (8) through the substrate (6), and via the second extraction element (11) out of the substrate (6). Different chromatic aberrations are generated in the first and second beam path (13, 14) because of the injection element (8) and the extraction elements (10, 11). The control unit triggers the imaging element (2) such that the imaging element (2) successively generates the image to be displayed for the first beam path (13) and the second beam path (14) as a first image and second image, respectively, in a pre-distorted manner, opposite the chromatic aberration of the respective beam path, in such a way that the chromatic aberration generated in the respective beam path (13, 14) is compensated when the first and second image is displayed. The display unit also comprises a switching module which ensures that, in synchrony with the first and second image being generated, a user can see the first image only via the first beam path (13) and the second image only via the second beam path (14).
摘要:
Die Erfindung betrifft eine Anordnung mit einem Halbleiterchip (1), der dazu eingerichtet ist, im Betrieb Licht zu emittieren, und einer Abdeckschicht (2), die einer lichtabstrahlenden Oberfläche des Halbleiterchips (1) gegenüber liegt, so dass von dem Halbleiterchip (1) abgestrahltes Licht in die Abdeckschicht (2) eindringt. Die Anordnung ist erfindungsgemäß dadurch gekennzeichnet, dass in einem sich mit dem Chip (1) überschneidenden Bereich der Abdeckschicht (2) eine Licht umlenkende Struktur vorgesehen ist, durch die in die Abdeckschicht (2) eingedrungenes Licht in Richtung der Längserstreckung der Abdeckschicht (2) umgelenkt wird und die Abdeckschicht (2) als Lichtleiter wirkt und dazu eingerichtet ist, dass Licht verteilt über die Oberseite der Abdeckschicht (2) abzustrahlen.
摘要:
A toy device unit that includes a pair of stacked transparent plates coupled to a housing. A user can write images on each plate. Mounted to the housing is a first light source aligned with an edge of the first plate and a second light source aligned with an edge of the second plate. The unit has a switch that can be moved by a user to illuminate either the first plate or the second plate.