Light guiding optical system
US10274156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2018 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | May 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guiding optical system comprising a light guide at least partially formed of an optically transparent material and a light source situated on an input surface of the light guide. The light guide comprises on its front side an output surface for the output of light rays conducted through and out of the light guide, and on its rear side a tooth-like structure to unbind light rays through the output surface out of the light guide. The light guiding optical system further comprises a reflector at least partially formed of an optically transparent material, positioned near the tooth-like structure, and comprising at least two reflective surfaces configured to totally reflect light rays that have escaped from the light guide through the tooth-like structure and to return them to the light guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.