US 2026/0140371 A1Published application

Image light guide system with aligned blocking features

AssigneeVuzix Corporation

InventorsRobert J. Schultz, Marek W. Kowarz

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Abstract

An image light guide system including an image light guide having an out-coupling diffractive region. The out-coupling diffractive region includes one or more sub-regions having diffractive features arranged to diffract at least a first portion of image-bearing light toward an eyebox. The image light guide system also includes a blocking region having a plurality of blocking features arranged to prevent a second portion of image-bearing light reflected from the one or more sub-regions from exiting the image light guide system in a direction opposite the eyebox. In son examples the blocking region is disposed on a surface of the image light guide, on a surface of a low-index cladding layer, or on a surface of a support substrate positioned a distance from the image light guide.

Claims21

Dependent claims

An image light guide system, comprising:

an image light guide comprising:
an in-coupling diffractive optic operable to couple image-bearing light into the image light guide;
and
an out-coupling diffractive region comprising a plurality of sub-regions, wherein each sub-region comprises a plurality of diffractive features arranged to out-couple at least a first portion of the image-bearing light and direct the first portion of image-bearing light in a first direction toward an eyebox, and wherein the plurality of diffractive features are arranged to diffract at least a second portion of the image-bearing light in a second direction opposite the first direction;
and
a blocking region comprising a plurality of blocking features, wherein each blocking feature of the plurality of blocking features is aligned with a respective sub-region of the out-coupling diffractive region, such that each blocking feature of the plurality of blocking features is operable to prevent the second portion of the image-bearing light from exiting the image light guide system in the second direction.

3 more elements

Dependencies are inferred from the claim text.