Optical element and method of forming an optical element
First Claim
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1. An optical element, comprising:
- an optically transparent substrate;
first and second pluralities of light extraction features of optically transparent material that exhibit total internal reflection respectively disposed on opposing first and second sides of the substrate; and
a waveguide body wherein the light extraction features of one of the first and second pluralities secure the substrate to the waveguide body;
wherein the first and second pluralities of light extraction features are non-adhesively bonded to the optically transparent substrate;
wherein the light extraction features of one of the first and second pluralities are non-adhesively bonded to the waveguide body; and
wherein the optical element comprises non-adhesive bonds on at least three surfaces thereof.
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Abstract
According to one aspect, an optical waveguide comprises a waveguide body exhibiting total internal reflection, a substrate, and a plurality of light extraction features disposed on a surface of the substrate. The light extraction features are non-adhesively bonded to the waveguide body or may be disposed on opposing sides of the substrate. A method of forming an optical element is also disclosed.
681 Citations
9 Claims
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1. An optical element, comprising:
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an optically transparent substrate; first and second pluralities of light extraction features of optically transparent material that exhibit total internal reflection respectively disposed on opposing first and second sides of the substrate; and a waveguide body wherein the light extraction features of one of the first and second pluralities secure the substrate to the waveguide body; wherein the first and second pluralities of light extraction features are non-adhesively bonded to the optically transparent substrate; wherein the light extraction features of one of the first and second pluralities are non-adhesively bonded to the waveguide body; and wherein the optical element comprises non-adhesive bonds on at least three surfaces thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification