Optical device for augmented reality display
US12416754B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jun 29, 2021 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Dec 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0174
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device for controlling light in an augmented reality display is provided. The optical device includes a waveguide and a diffractive optical element to couple light into the waveguide. The diffractive optical element includes an array of structured grating elements. The structured grating elements are arranged based on a repeating unit cell, each unit cell including at least two grating elements defining an irregular grating structure such that the diffractive optical element produces an asymmetrical diffraction response. Methods of manufacturing the optical device are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.