Light combining system
US8922899B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Oct 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light combining system is provided comprising: prisms comprising respective entrance faces enabled to receive respective on-state light from respective digital-micro-mirror devices (DMD). At least one interface between prisms is enabled to receive respective on-state light from the prisms. A mirror at the at least one interface is enabled to transmit first on-state light from a first prism through a second prism and reflect second on-state light from the second prism in alignment with the first on-state light back through the second prism. Respective angles formed by a normal of the mirror and each of the first on-state light and the second on-state light is less than a total internal reflection angle. A combination of respective back working distances of the DMDs and shapes of each of the prisms is chosen such that respective illumination paths and respective reflection paths of each of DMDs do not interfere with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.