Light collecting device and light collecting mirror
US7542208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/143
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A beam-condensing unit has a first light source, a second light source, and a condenser mirror. The first and second light sources output a plurality of first and second light fluxes arrayed along a first direction, respectively. A condenser mirror has first and second optical plates that intersect with each other. The first optical plate includes a plurality of first reflecting portions that are arrayed along the first direction and reflect the first light fluxes, respectively. The second optical plate includes a plurality of second reflecting portions that are arrayed along the first direction alternately with the first reflecting portions and reflect the second light fluxes, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.