Light projector
US11474366B2 · kind B2 · utility
2Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/286
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light projector including a light source, a beam multiplication film, and a tunable wave plate is provided. The light source is configured to emit a light beam. The beam multiplication film is disposed on a transmission path of the light beam and made of anisotropic refractive index material, wherein a plurality of separated light beams are produced after the light beam from the light source passes through the beam multiplication film. The tunable wave plate is disposed on transmission paths of the separated light beams from the beam multiplication film and configured to modulate the separated light beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.