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3D display apparatus

A technology for display devices and diffractive optical elements, which can be used in optical elements, optics, instruments, etc., and can solve problems such as increased weight and cost

Active Publication Date: 2018-08-21
ULTRA D COOPERATIEF U A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Display apparatus 140 for enabling a user to experience a 3D perception when visual information is presented by the display apparatus is described. The display apparatus has an image forming unit 142having a two-dimensional array of image subpixels arranged to emit light for presenting associated visual information, and an optical system 144 having an array of diffractive optical elements 150 associated with respective ones of the array of image subpixels. Each diffractive optical element is arranged to diffract light from the associated image subpixel into a diffraction pattern with a plurality of diffraction orders to provide the visual information from the associated image subpixel to a plurality of directional viewing regions associated with the plurality of diffraction orders.

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 Applications(China)
IPC IPC(8): G02B27/22G02B30/26
CPCG02B30/24G02B30/26G02B5/1866G02B30/36G02B30/27
Inventor W·A·H·勒伦H·G·马斯曼
Owner ULTRA D COOPERATIEF U A