Shutter device
US5164766A · kind A · utility
3Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Nov 27, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A shutter for an objective lens particularly for a photoprinter or the like in which the objective lens must be frequently opened and shut. The shutter includes an arm swingably driven by an actuater and provided at a forward end with a pair of shutter blades. The objective lens is placed in a range over which the pair of shutter blades swing as the arm swings so that the objective lens may be received in a gap defined between this pair of shutter blades and the objective lens may be opened or shut as the arm swings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.