Light source device
US6123429A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | May 15, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light source device has a first mirror for reflecting light emitted by a light source, and a second mirror for reflecting the light reflected by the first mirror and guiding the reflected light toward the irradiation target portion. The first mirror has a curved reflection surface having an elliptic or parabolic shape in section along the optical axis direction. The light source is set at the position of a focal point of the elliptic or parabolic shape of the curved reflection surface. The second mirror has a linear reflection surface which has a linear shape in section along the optical axis direction and faces the curved reflection surface of the first mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.