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Waveguide display device

A display device and waveguide technology, applied in the field of optics, can solve problems such as uneven brightness of the field of view, small field of view, etc., and achieve the effect of improving the uniformity of field of view brightness and improving the system's field of view

Inactive 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 uneven brightness and small viewing angle in augmented reality display devices

Method used

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  • Waveguide display device
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Embodiment Construction

[0035] 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. A first image source is used for generating an S-polarized light image. A second image source is used for generating a P-polarized light image. A first projection optical system is used for projecting the S-polarized light image generated by the first image source to a first input coupler. A secondprojection optical system is used for projecting the P-polarized light image generated by the second image source to a second input coupler. The first input coupler is used for coupling the S-polarized light emitted by the first projection optical system into a waveguide. The second input coupler is used for coupling the P-polarized light emitted by the second projection optical system into the waveguide. A first output coupler is used for coupling out the S-polarized light propagated in the waveguide. A second output coupler is used for coupling out the P-polarized light propagated in the waveguide. The brightness uniformity of the field of view of the display image and the field angle of the system can be improved.

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] But for the grating, the distribution of its diffra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01
CPCG02B27/0101G02B2027/0123
Inventor 丁武文
Owner JOURNEY TECH LTD
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