Unlock instant, AI-driven research and patent intelligence for your innovation.

Image light guide with circular polarizer

A circular polarizer and image technology, applied in the field of electronic displays, can solve problems such as harm and damage to the continuous performance of image light guides

Active Publication Date: 2020-10-02
ICUITI CORP
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dust, chemicals and other environmental hazards can also impair the continued performance of image light guides exposed to these conditions

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
  • Image light guide with circular polarizer
  • Image light guide with circular polarizer
  • Image light guide with circular polarizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present description relates in particular to elements forming part of, or cooperating more directly with, a device according to the invention. It is to be understood that elements not specifically shown or described may take various forms well known to those skilled in the art.

[0026] Where they are used herein, the terms "first", "second", etc. do not necessarily denote any order, order, or precedence, but are used only to more clearly distinguish one element or group of elements from another or group of elements, unless otherwise specified.

[0027] In the context of this disclosure, the terms "viewer", "operator", "observer" and "user" are considered equivalent and refer to a person viewing a virtual image through a near-eye viewing device.

[0028] In the context of optical devices, the term "coupling" or "coupler" refers to the connection by which light travels from one optical medium or device to another through an intermediate structure that facilitates th...

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

An imaging apparatus for conveying a virtual image superimposed within a view of an ambient environment has a waveguide having first and second surfaces. An in-coupling diffractive optic on one of theplanar surfaces is disposed to direct image-bearing light beams into the waveguide. An out-coupling diffractive optic on one of the planar surfaces of the waveguide is disposed to direct the image-bearing light beams from the waveguide toward a viewer eyebox. An outer cover protects as least part of the waveguide from undesirable environmental influences of an ambient environment while supportingviews of the ambient environment from the eyebox. A circular polarizer interposed between waveguide and the outer cover blocks the return of stray light into the waveguide.

Description

technical field [0001] The present invention relates generally to electronic displays, and more particularly to displays that use image light to guide a viewer to deliver virtual image content. Background technique [0002] Head-mounted displays (HMDs) are being developed for a wide variety of uses, including military, commercial, industrial, firefighting, and entertainment applications. For many of these applications, it is particularly valuable to form a virtual image that can be visually superimposed on the real world image formed in the eye from within the HMD user's field of view. The image light guide transports image-bearing light along the transmissive waveguide from a location outside the viewer's field of view to a location aligned with the viewer's pupil while maintaining the viewer's view of the environment through the waveguide. [0003] In such conventional image lightguides, a collimated, relative angle-encoded beam from an image source is coupled into a slab...

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
IPC IPC(8): G02B27/02G02B27/01G02B27/28H04N13/344
CPCG02B27/0172G02B6/0075G02B2027/0185G02B2027/0118G02B2027/0178H04N13/344H04N13/337G02B6/0016G02B6/0036G02B6/0056G02B6/0093G02B6/0076G02B6/2753G02B6/276
Inventor R·J·舒尔茨
Owner ICUITI CORP