Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 12, 2022
Patent Application Number
16963535
Date Filed
June 26, 2018
Patent Citations
Patent Primary Examiner
An optical device includes a lightguide having a first pair of external surfaces parallel to each other, and at least two sets of facets. Each of the sets including a plurality of partially reflecting facets parallel to each other, and between the first pair of external surfaces. In each of the sets of facets, the respective facets are at an oblique angle relative to the first pair of external surfaces, and at a non-parallel angle relative to another of the sets of facets. The optical device is particularly suited for optical aperture expansion.
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