Camera having a photo-taking lens barrel movable in the direction of the optic axis
US4721972A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1986 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | May 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a camera having a photo-taking lens barrel displaceable in the direction of the optic axis, the lens barrel includes a photo-taking optical system, a lens barrier blade disposed forwardly of the optical system and movable in a plane orthogonal to the optic axis of the optical system between a closed position for covering the front of the optical system and an opened position for exposing the front of the optical system, a shutter blade serving also as a diaphragm, the shutter blade being disposed rearwardly of the optical system and opened and closed to expose a film to light, an outer shell surrounding the optical system, the barrier blade and the shutter blade, and a shutter blade driving device disposed in a space rearward of the barrier blade when in the opened position and surrounding the optical system, the driving device driving the shutter blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.