Electronic flash unit with integrated flash charge switch
US6393221B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic flash unit includes a flash circuit board, an illumination-producing flash tube having two opposite end electrodes, respective electrical conductors contacting the opposite end electrodes to electrically connect them to the flash circuit board, an energy-storing capacitor electrically connected to the flash circuit board and chargeable to a storage capacity sufficient to cause the flash tube to provide illumination, and a flash charge switch which when manually closed permits the capacitor to be charged. The flash charge switch has a movable closing-switch element that forms an integral single piece with one of the electrical conductors contacting the opposite end electrodes of the flash tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.