Lens-fitted photographic film unit
US5557356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Sep 8, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2215/0503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens-fitted photographic film unit includes an electronic flash provided therein, a neon lamp to light or flicker when a charging voltage for the electronic flash reaches a predetermined value. A first window is provided on the upper surface or the rear surface of an external member of the film unit through which a light emitted from the neon lamp is observed, and a second window is further provided on the front surface of the external member through which the light emitted from the neon lamp is irradiated toward an object to be photographed. The film unit further includes a condenser lens provided between the second window and the neon lamp, to converge the light emitted from the neon lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.