Multi-part optical system for light propagation in confined spaces and method of fabrication and use thereof
US10473938B2 · kind B2 · utility
0Cited by
9References
15Claims
0Family size
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Key dates
| Filing date | Dec 29, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Dec 29, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0174
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is a Substrate guided hologram that allows a wider range of optical devices based on SGHs with improved parameters such as larger NTE displays with a wider field of view, thinner substrates and more compact form factors. The Substrate-Guided Hologram of the subject invention includes a holographic lens which is positioned at an angle to and spaced from a holographic grating, with a mirror located at a diagonal to each of the lens and the grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.