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Waveguide-based optical systems and methods for augmented reality systems

An augmented reality and optical system technology, applied in optics, optical components, light guides, etc., can solve the problems of light guide thickness, etc., and achieve the effect of cheap materials and easy design

Active Publication Date: 2020-06-02
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the lightguides used so far tend to be relatively thick, i.e., they are described by geometrical optics principles rather than by the electromagnetic theory of waveguides

Method used

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  • Waveguide-based optical systems and methods for augmented reality systems
  • Waveguide-based optical systems and methods for augmented reality systems
  • Waveguide-based optical systems and methods for augmented reality systems

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Embodiment Construction

[0028] Reference will now be made in detail to various embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same or like reference numbers and labels will be used throughout the drawings to refer to the same or like parts. The figures are not necessarily to scale, and those skilled in the art will recognize where the figures have been simplified to illustrate key aspects of the disclosure.

[0029] The claims set forth below are incorporated into and constitute a part of this Detailed Description.

[0030] Cartesian coordinates are shown in some figures for reference and are not intended to limit direction or orientation.

[0031] In the following description, λ refers to an operating wavelength of light, and Δλ refers to an operating wavelength range (ie, a spectral band) of light including the operating wavelength. Also, θ refers to an angle, and Δθ refers to an angular range, which in an example repr...

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Abstract

An augmented reality optical system comprises a waveguide structure that includes a waveguide layer supported by a substrate. An input grating and an output grating reside within the waveguide layer and are laterally spaced apart. Input light from a display is made incident upon the input grating. The input light is coupled into the waveguide layer and travels therein as multiple guided modes to the output grating. The input and output gratings provide phase matching so that the guided modes are coupled out of the waveguide layer by the output grating continuously along the output grating to form output light. Meantime, light from a scene is transmitted perpendicularly through the output grating so that the output light and the light from the scene are combined by the eye of a user to forman augmented reality image.

Description

[0001] This application claims the benefit of priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 62 / 572,109, filed October 13, 2017, the contents of which this application is based on and which are incorporated by reference in their entirety into this article. technical field [0002] The present disclosure relates to augmented reality (AR) systems, and more particularly to waveguide-based optical systems and methods for AR systems. Background technique [0003] AR systems are used to add virtual objects to the real visual scene that the user is observing. An example type of AR system is wearable and utilizes eyewear in the form of glasses, goggles, or a helmet worn by the user, and is sometimes referred to as a head-mounted display (HMD) system. AR systems typically include an optical system configured to allow viewing of an object or scene while also adding augmented objects to the actual object or directly viewed scene. [0004] AR systems generall...

Claims

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Application Information

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IPC IPC(8): G02B27/01G02B27/00
CPCG02B27/0081G02B27/0172G02B6/12007G02B6/1221G02B2027/0178G06V20/20
Inventor J·T·基奇M·F·克罗尔
Owner CORNING INC
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