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Transverse light guide pipe

A light pipe and light technology, applied in the field of optical light pipes, can solve problems such as limited folding angles

Pending Publication Date: 2022-04-26
LUMUS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such solutions yield higher efficiencies, these solutions are significantly limited to specific fold angles

Method used

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  • Transverse light guide pipe
  • Transverse light guide pipe
  • Transverse light guide pipe

Examples

Experimental program
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Embodiment Construction

[0043] Embodiments of the present invention are directed to light pipes that provide light paths that can be folded at any desired fold angle.

[0044]Unless otherwise defined herein, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of embodiments of the invention, exemplary methods and / or materials are described below. In case of conflict, the patent specification, including definitions, will control. Exemplary methods and / or materials in the practice or testing of embodiments of the invention are described below. In case of conflict, the patent specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and not intended to be necessarily limiting.

[0045] Before describing in det...

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Abstract

A light pipe includes at least two optical structures having different refractive indices. The interface between the two optical structures is inclined with respect to the longitudinal axis of the light pipe such that the output light from the output surface at the distal end of the light pipe is not parallel to the input light parallel to the longitudinal axis at the input surface at the proximal end of the light pipe. The light is refracted inside the light guide between (at least) the two optical structures, thereby changing the direction of the light path of the light through the light guide, thereby allowing a higher degree of freedom to select the offset angle (fold angle) of the light guide. By optimizing various parameters of the light pipe, a desired output optical axis angle (i.e., fold angle) suitable for a desired optical engine envelope can be achieved.

Description

technical field [0001] The present invention relates generally to optical light guides, and more particularly to light guides useful for illuminating electronic display sources such as liquid crystal on silicon (LCOS) microdisplays for injecting images into optical waveguides for near-eye displays, which The light guide has an optical axis (light path) that can be folded at any desired fold angle relative to the associated system components. Background technique [0002] Adapting optical system shape and form factor in an aesthetically pleasing wearable frame is a challenge in augmented reality systems, especially when mixing different light (e.g., LED) source colors is required. One way to mix different light channels together is to use light pipes to generate lighting. For aesthetic reasons, it is desirable to align the light pipe with the frame of the eyeglasses. However, light pipes are relatively long elements that typically protrude beyond the desired light engine en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/08G02B27/01F21V8/00G02B6/42
CPCG02B6/0008G02B27/0172G02B2027/0107G02B6/0006
Inventor 齐翁·艾森菲尔德乔纳森·基尔柏格
Owner LUMUS LTD