Laser projection device with reflective component and 1/4 wave plate
US10509303B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2018 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B33/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
For a laser projection device, a dichroic component is disposed on a light emitting path of a laser array for receiving a first blue polarized light from the laser array. A 1/4 wave plate is disposed between a reflective component and the dichroic component and configured to receive the first blue polarized light from the dichroic component, generate a second blue polarized light, and emit the second blue polarized light to the reflective component; and further configured to receive the second blue polarized light reflected by the reflective component, generate a third blue polarized light, and emit the third blue polarized light to the dichroic component. The dichroic component is further configured to receive the third blue polarized light from the 1/4 wave plate and fluorescent light from a reflective fluorescent wheel, and output the third blue polarized light and the fluorescent light in a same light emitting direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.