Image waveguide having a bend
US8472119B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Nov 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical apparatus having a waveguide that includes a bend, a first segment and a second segment operatively coupled at the bend, the first and second segments each including a pair of reflective surfaces being substantially parallel and opposing each other. An in-coupling region receives light into the first segment of the waveguide, and an out-coupling region allows the light to exit the second segment of the waveguide. A light filtering region disposed near the bend between the first segment of the waveguide and the second segment of the waveguide will selectively filter light transmitted from the first segment of the waveguide to the second segment of the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.