Substrate guided relay with pupil expanding input coupler
US7949214B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2008 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Apr 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0081
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical substrate guided relay (300) includes an optical substrate (302) having at least one major face (411), an output coupler (303) coupled to a major face (411,412), and an input coupler (301) coupled to a major face (411,412). The input coupler (301) is configured to reflect, via internal layers (414), portions of received light to the optical substrate 302. The input coupler (301) includes either one or more internal layers (414) or a contoured face (1040) with surfaces configured as reflectors that expand the received light and direct it into the optical substrate (302). The output coupler (303) expands a pupil of light in one direction and directs the expanded light away from the optical substrate guided relay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.