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Waveguide display device

A technology of a display device and a waveguide, applied in the optical field, can solve the problems of low energy utilization rate of an augmented reality display device, and achieve the effects of improving the energy utilization rate, improving the brightness uniformity of the field of view, and improving the coupling efficiency

Inactive Publication Date: 2018-06-01
JOURNEY TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Designed to solve the problem of low energy utilization in augmented reality display devices

Method used

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Embodiment Construction

[0029] 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 technical field of optics. The waveguide display device comprises an image source, a projection optical system, an input coupler, a waveguide and an output coupler, wherein the image source is used to display 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 emergent light of the projection optical system in the waveguide; and the output coupler is used for coupling light propagated in the waveguide out. The waveguide display device also comprises a quarter-wave plate and a reflector arranged on the surface of the waveguide. The grating coupling efficiency can be improved, the uniformity of the field of view of the displayed image is improved, and the overall energy utilization rate of the system is improved.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a waveguide display device. Background technique [0002] An existing augmented reality display device based on a transflective film includes an image source, a projection optical system, a waveguide, an input coupling prism, and an output coupling transflective film. The output light of the image source is converted into parallel light at various angles by the projection optical system. Each angle corresponds to each pixel point on the image source. The light is deflected so that the light can propagate in the waveguide according to the principle of total reflection. Corresponding to the position of the exit pupil in the waveguide, multiple output coupling semi-transparent and semi-reflective films are arranged to couple the light transmitted in the waveguide to the waveguide, and multiple output coupling semi-transparent and semi-reflective films arranged in parallel realize ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B6/00
CPCG02B6/005G02B6/0055G02B27/0101
Inventor 丁武文郑昱
Owner JOURNEY TECH LTD
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