Lens-fitted photo film unit and electronic flash device for use therewith
US5854946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 1997 |
| Grant date | Dec 29, 1998 |
| Priority date | — |
| Expiry date | Jul 11, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens-fitted photo film unit has an electronic flash device (11, 30; 115) with a printed circuit board (173). The flash device includes a flash-emitting section (6, 170) for emitting flash light toward a photographic field, and a main capacitor (31, 155) for storing charge to be discharged in the flash-emitting section. The printed circuit board converts a current of a battery (12, 127) into a current of high voltage to be supplied to the main capacitor. An LED is driven to emit light in response to charging of the main capacitor at a predetermined level. The flash-emitting section is arranged to be slidably disposed on said printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.