Diffraction grating with a variable refractive index using multiple resins
US10823887B1 · kind B1 · utility
39Cited by
25References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 23, 2018 |
| Grant date | Nov 3, 2020 |
| Priority date | — |
| Expiry date | Mar 12, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An inkjet is used to fabricate an optical device having a varying refractive index. The inkjet deposits a first material having a first refractive index and a second material having a second refractive index in a pattern on a substrate. The first material and/or the second material are processed to form an optical device having a refractive index that varies in one or two dimensions. The optical device is used in a virtual-reality system or augmented-reality system to provide angular selectivity from display to a user's eye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.