Illumination system and projection device
US11914277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2022 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Jun 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2013
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An illumination system for providing an illumination beam includes red, blue, and green light source modules, a first light combining element, and a light uniforming element. The red light source module includes a first red light emitting element emitting first red light and a second red light emitting element emitting second red light. A peak wavelength of the second red light is greater than a peak wavelength of the first red light. The blue light source module includes a first blue light emitting element emitting first blue light and a second blue light emitting element emitting second blue light. A peak wavelength of the second blue light is less than a peak wavelength of the first blue light. The green light source module generates green light. The first light combining element guides these lights into the light uniforming element, so that the illumination system outputs the illumination beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.