Light source device and projector apparatus having same
US7195388B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2004 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Mar 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to the present invention, there is provided a light source device having a reflector including a light source lamp and an opening for emitting light for reflecting light radiated from the light source lamp arranged within the reflector to emit the light from the opening, and a glass arranged ahead of the opening of the reflector inclinedly by a predetermined angle with respect to a plane perpendicular to the optical axis of light emitted from the reflector. According to the light source device, the light source lamp is prevented from temperature rise and consequent overheat caused by light reflected on the glass thereby to return into the reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.