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3d display device

A technology for display devices and diffractive optical elements, which is applied in the direction of instruments, optics, and diffraction gratings, and can solve the problems of increased weight and cost

Active Publication Date: 2021-06-29
ULTRA D COOPERATIEF U A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, optical tolerances may require additional mechanical measures to define and maintain this distance, for example by using solid transparent plates to provide this distance, which may result in a significant increase in weight and cost

Method used

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Embodiment Construction

[0028] figure 1 The presentation of visual information by the display device 140 is schematically shown. The display device 140 may enable a user to experience 3D perception when visual information is presented by the display device 140 . The display device 140 includes: an image forming unit 142 including a two-dimensional image sub-pixel array (shown as 142b in later figures); and an optical system 144 including a diffractive optical element array 150 . The two-dimensional array of image sub-pixels is arranged to emit light for presenting associated visual information. The two-dimensional image forming unit 142 is arranged for emitting light with a predefined angular intensity profile from image sub-pixels of the two-dimensional image sub-pixel array to the optical system. In the illustrated embodiment, the two-dimensional image forming unit 142 is arranged to emit slightly divergent light. An array of diffractive optical elements 150 is associated with respective image s...

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Abstract

A display device 140 is described for enabling a user to experience 3D perception when visual information is presented by the display device. The display device has: an image forming unit 142 having a two-dimensional array of image sub-pixels arranged to emit light for presenting associated visual information; and an optical system 144 having a An array of diffractive optical elements 150 associated with respective image sub-pixels in the array of image sub-pixels. Each diffractive optical element is arranged to diffract light from an associated image sub-pixel into a diffraction pattern having a plurality of diffraction orders to provide visual information from the associated image sub-pixel to the plurality of diffraction orders Associated multiple directional viewing zones.

Description

technical field [0001] The present invention relates to a display device for enabling a user to experience 3D perception when visual information is presented by the display device. Background technique [0002] Numerous variations of display devices are known for enabling a user to experience 3D perception when visual information is presented by the display device. Some known systems require the user to wear glasses, for example, to separate the visual information presented to the left eye from that presented to the right eye. The inconvenience of having to wear glasses can be overcome by a so-called autostereoscopic system. Some systems for 3D perception use lenticular lenses to spatially guide visual information. An example of a biconvex system is described in "Multiview 3D-LCD" by C. van Berkel et al., published in Proceedings of SPIE, Vol. 2653, pp. 32-39. Some system approaches suffer from their design limitations due to physical constraints. For example, some high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B30/24G02B30/26G02B5/18G02B30/36G02B30/27
CPCG02B30/24G02B30/26G02B5/1866G02B30/36G02B30/27
Inventor W·A·H·勒伦H·G·马斯曼
Owner ULTRA D COOPERATIEF U A