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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: 2021-03-02
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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  • Waveguide display device
  • Waveguide display device
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Embodiment Construction

[0034] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. Herein, various embodiments may be referred to individually or collectively by the term "invention", which is for convenience only and is not intended to automatically limit the scope of this application if in fact more than one invention is disclosed. A single invention or inventive concept. Herein, relational terms such as first and second etc. are used only to distinguish one entity or operation from another with...

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Abstract

The invention discloses a waveguide display device, which relates to the field of optical technology. It includes an image source, a projection optical system, an input coupler, a waveguide, an optical transmission component, and an output coupler, wherein the image source is used to display an image; the projection optical system is used to direct the image displayed by the image source to the input coupler; The input coupler is used for coupling the outgoing light of the projection optical system into the waveguide; the output coupler is used for coupling out the light propagating in the waveguide; the optical transmission component is arranged on the waveguide and is opposite to the output coupler. The invention can reduce the exit pupil distance while avoiding exit pupil discontinuity, so that the exit pupils at each position of the system are uniform.

Description

technical field [0001] The 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, including image sources, projection optics, input couplers, waveguides, and output couplers, such as figure 1 shown. The light emitted by the image source is converted into parallel light at various angles by the projection optical system, and the input coupling grating diffracts the parallel light at each angle to a specific angle to meet the conditions of total reflection in the waveguide, so that the light can be reflected in the waveguide according to the total reflection to propagate. The output coupler installed in the waveguide corresponding to the position of the exit pupil is used to couple out the light transmitted in the waveguide and realize the expansion of the exit pupil at the same time. [0003] When the totally reflected light wave in the wavegu...

Claims

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Application Information

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