Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Waveguide display based on diffractive optical element

A technology for diffractive optical elements and waveguide displays, which is applied in the directions of optical elements, light guides, optics, etc., can solve problems such as the limitation of the viewing angle of the waveguide display, and achieve the effect of solving the limited viewing angle.

Active Publication Date: 2014-09-10
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF5 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to solve the problem that the viewing angle of existing waveguide displays based on diffractive optical elements is limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waveguide display based on diffractive optical element
  • Waveguide display based on diffractive optical element
  • Waveguide display based on diffractive optical element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

[0024] The display system of the see-through waveguide display in the prior art is as figure 1 As shown, the relay optical system is included, so that the overall volume and weight of the display system are significantly increased, and the viewing angle of the display is obviously limited.

[0025] This embodiment provides a waveguide display based on a diffractive optical element, including an image source, an input coupler, an output coupler, and a flat optical waveguide, and the output coupler is a multiplexing volume holographic grating. Wherein the multiplexing volume holographic grating is three volume holograms recorded on the same medium material. The volume hologram is a reflective holo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a waveguide display based on a diffractive optical element. The waveguide display comprises an image source, an input coupler, an output coupler and a planar optical waveguide, wherein the output coupler is a multiplexed volume holographic grating. By adopting the structure, the problem of limitation on the field angle of the conventional waveguide display based on the diffractive optical element is solved. The waveguide display can be widely applied to the field of waveguide displays.

Description

technical field [0001] The invention relates to a waveguide display, in particular to a waveguide display based on diffractive optical elements. Background technique [0002] Existing see-through optical waveguide displays are mainly composed of an image source, a relay optical system, an input coupler, an output coupler (beam combiner), and a flat optical waveguide. According to the output coupler (beam combiner, combiner, there are usually two channels, so that the transmitted beam enters the human eye, and at the same time, the virtual image of the image source after coupling through the waveguide enters the human eye, so that the human eye can observe a picture superimposed on the real image. Virtual image above the scene) category, including waveguide displays based on coated mirror arrays and waveguide displays based on diffractive optical elements. The disadvantage of waveguide displays based on coated mirror arrays is severe ghosting, whether for a single wavelength...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122G02B6/124G02B6/00G03H1/04
Inventor 刘娟韩剑王涌天
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com