Waveguide display device

A technology of a display device and a waveguide, applied in the optical field, can solve problems such as discontinuity of exit pupils, achieve uniform and consistent exit pupils, reduce the distance between exit pupils, and avoid discontinuity of exit pupils

Active Publication Date: 2018-04-27
JOURNEY TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Designed to solve the problem of exit pupil discontinuity in augmented reality display devices

Method used

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Embodiment Construction

[0034] The following description and drawings fully illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. The embodiments only represent possible changes. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments of the present invention includes the entire scope of the claims, and all available equivalents of the claims. In this document, each embodiment may be individually or collectively denoted by the term "invention", which is only for convenience, and if more than one invention is actually disclosed, it is not intended to automatically limit the scope of the application to any A single invention or inventive concept. In this article, relational terms such as first and second are only used to distinguish one...

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Abstract

The invention discloses a waveguide display device, which relates to the technical field of optics. The waveguide display device includes an image source, a projection optical system, an input coupler, a waveguide, an optical transmission component and an output coupler. The image source is used for displaying an image. The projection optical system is used for projecting the image displayed by the image source to the input coupler. The input coupler is used for coupling the emergent light of the projection optical system into the waveguide. The output coupler is used for coupling out the light propagated in the waveguide. The optical transmission component is arranged on the waveguide and is opposite to the output coupler. The exit pupil spacing can be reduced and the exit pupil in all positions of the system can be made uniform while exit pupil discontinuity can be avoided.

Description

Technical field [0001] The present invention relates to the field of optical technology, in particular to a waveguide display device. Background technique [0002] Existing grating-based augmented reality display devices include image sources, projection optical systems, input couplers, waveguides and output couplers, such as figure 1 Shown. The light emitted by the image source is transformed into parallel light at various angles by the projection optical system, and the input coupling grating diffracts the parallel light at various angles to a specific angle to meet the conditions of total reflection in the waveguide, so that the light can be totally reflected in the waveguide To spread. The output coupler set in the waveguide corresponding to the exit pupil position is used to couple out the light transmitted in the waveguide while achieving exit pupil expansion. [0003] When the totally reflected light wave in the waveguide enters the output coupling grating, when the incide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0101G02B2027/0129
Inventor 丁武文
Owner JOURNEY TECH LTD
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