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Waveguide device and optical engine

A waveguide device and optical engine technology, applied in the field of waveguides and optical engines, can solve the problems of reducing the weight and thickness of the optical engine, low efficiency, etc., and achieve the effects of reducing weight and thickness, increasing viewing angle, and increasing viewing angle

Active Publication Date: 2020-06-12
HTC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such, conventional optical engines for providing projected images to the user's eyes generally require multiple waveguides to transmit the three primary colors, which is not conducive to reducing the weight and thickness of the optical engine
In addition, it is inefficient due to the need for conventional diffraction gratings on waveguides to deliver the projected image at an enlarged viewing angle

Method used

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  • Waveguide device and optical engine
  • Waveguide device and optical engine
  • Waveguide device and optical engine

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Embodiment Construction

[0034] A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some commonly used structures and elements are shown in a simple and schematic manner in the drawings, and the same elements in different embodiments are marked with the same reference numerals.

[0035] Please refer to figure 1 . figure 1 It is a schematic diagram illustrating an optical engine 100 according to some embodiments of the present invention. like figure 1 As shown, the optical engine 100 can be used in an augmented reality device (not shown), which can be implemented as (but not limited to) head-mounted dis...

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Abstract

A waveguide device includes two holographic optical elements and a waveguide element. Each of the holographic optical elements has a first holographic grating and a second holographic grating. The first holographic grating is configured to diffract light of a first wavelength to propagate with a first diffraction angle. The second holographic grating is configured to diffract light of a second wavelength to propagate with a second diffraction angle. The waveguide element is configured to guide light propagated from one of the holographic optical elements to another of the holographic optical elements.

Description

technical field [0001] The invention relates to a waveguide and an optical engine. Background technique [0002] Various types of computing, entertainment, and / or mobile devices can be implemented with transparent or translucent displays through which a user of the device can view the surrounding environment. Such devices (which may be referred to as see-through, mixed reality display device systems, or augmented reality (AR) systems) allow users to view their surroundings through the device's transparent or translucent display, as well as see images of virtual objects ( For example, text, graphics, video, etc.), these images are generated to appear as part of and / or overlaid on the surrounding environment. These devices, which can be implemented as, but are not limited to, head-mounted display (HMD) glasses or other wearable display devices, typically utilize optical waveguides to replicate images to the device that the user can view as a virtual image in an augmented real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01G02B6/124
CPCG02B27/0172G02B6/124G02B27/0081G02B2027/0125G02B27/0103G02B2027/0118G02B6/005G02B6/0058G02B6/0055G02B2027/0105G02B2027/0112G03H1/0248G03H1/28G03H2223/23
Inventor 邓清龙
Owner HTC CORP