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Light modulating device for display

A light modulation device and display technology, applied in optics, instruments, nonlinear optics, etc., can solve the problems of being susceptible to failure, complex and expensive displays, and achieve the effect of reducing the number of

Active Publication Date: 2016-07-20
SEEREAL TECHNOLOGIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additional optical elements such as switchable diffusers or the above-mentioned deflection elements make displays for the representation of three-dimensional image content more complex, more expensive and more susceptible to failure

Method used

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  • Light modulating device for display
  • Light modulating device for display
  • Light modulating device for display

Examples

Experimental program
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Embodiment Construction

[0039] For the present invention it is assumed that the light beam transmitted through the diffractive device can be modulated by reflectivity modulation in the controlled layer of the diffractive device with a prism function and / or a lens function as well as a diffuse function. With these functions, the light beam can be deflected and / or diffused into defined directions at least one-dimensionally. The deflection or diffusion of the beam can be defined, since these functions are controllably encoded, at least in one dimension, onto a controllable layer such as a liquid crystal (LC) material using a voltage profile forming a diffraction grating.

[0040] In order to control the controllable material, the diffractive device comprises an electrode array with a large number of electrodes arranged parallel next to each other and in the shape of stripes or lines.

[0041] The display further comprises light modulating means with which the incident, at least partially coherent light ...

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Abstract

A display comprising an observer window, which in 3D and / or 2D representation mode of a 3D scene can be adapted to changing eye positions. Several observers can use the display simultaneously. The display includes a light modulation device having an actuatable diffraction unit and a controllable spatial light modulator, in which a 3D scene is coded in an actuatable manner, and a control unit. An observer window can be generated using coherent light beams on alternating eye positions. The diffraction unit includes at least electrodes and a controllable material into which a prism and / or lens function and / or scatter function can be written as a diffraction grating with a phase progression in an at least one-dimensionally controllable manner.

Description

technical field [0001] The invention relates to a light modulation device for a display, comprising at least one spatial light modulator and at least one controllable diffractive device, said components being controlled by a control unit, the display being designed for image processing of 3D scenes three-dimensional representation. Background technique [0002] The scope of application of the invention includes displays with a viewer window, such as holographic or autostereoscopic displays that can encode a 3D scene in, for example, a hologram, or holographic or autostereoscopic displays that can represent stereoscopic images of a 3D scene in two and / or three dimensions monitor. If at least one observer window coincides with the position of the observer's eyes, the observer can perceive the 3D scene as a holographic reconstruction or as a stereoscopic image. [0003] For a holographic display, if the observer window coincides with the pupil of the eye, the observer can see...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/29G03H1/04H04N13/04
CPCG02F1/292G03H1/2294H04N13/32H04N13/368H04N13/373H04N13/376
Inventor 拉尔夫·豪斯勒
Owner SEEREAL TECHNOLOGIES