Light guide plate and transparent illumination system utilizing the same
US11644609B2 · kind B2 · utility
1Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2021 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Jun 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transparent illumination system and related light guide plate is provided. The system is configured to facilitate total internal reflection propagation of light through the light guide plate despite low index of refraction differences between the glass material of the light guide layer and the adjacent layer. The system includes a light source, such as a laser diode, and an optical element to fan out light from the light source in the plane of the light guide plate. The light guide plate includes internal light extraction features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.