Camera having device that opens and closes light lock door of film cartridge
US6104881A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Mar 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/268
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera with a device that opens and closes a light lock door of a film cartridge loaded in the camera includes a drive source that moves a photographing lens barrel, and an opening/closing mechanism that uses the drive source to open and close the light lock door. A moving mechanism moves the photographing lens barrel. A switching mechanism is coupled to the drive source, and transmits a driving force from the drive source to a selected one of the moving mechanism and the opening/closing mechanism. When an inhibiting device inhibits movement of the photographing lens barrel and the movement mechanism of the photographing lens barrel, the switching mechanism transmits the driving force to the opening/closing mechanism for the light lock door. When the inhibiting device does not inhibit movement of the photographing lens barrel and its moving mechanism, a braking device prevents the opening/closing mechanism from moving so that the driving force is only supplied to the moving mechanism of the photographing lens barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.