Flash apparatus and camera using the same
US6381415B1 · kind B1 · utility
12Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Jul 19, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0592
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A flash apparatus is provided with a flash tube of the point light source type, a reflector, and a diffuser panel. The reflector reflects light flux from the flash tube forward. The diffuser panel is placed in a light flux passing position in front of the flash tube and the reflector and diffuses the light flux from the flash tube. The diffuser panel is so formed that diffusion angles of the light flux can vary with positions between a center corresponding to a light-emitting axis of the flash tube to a periphery concerning an area where the light flux from the flash tube passes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.