Lens barrel having a flare diaphragm mechanism
US5392160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1993 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Jan 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens barrel according to the present invention includes a first frame member which is moved in the direction of the optical axis with respect to a fixed member due to a predetermined operation; a second frame member which is moved in the direction of the optical axis with respect to the fixed member and the first frame member due to a predetermined operation; and a flare diaphragm engaging to the second frame member and interposed between the first frame member and the fixed member, wherein the flare diaphragm is engaged by one of the fixed member and the first frame member as a result of the movement of the second frame member in the direction of the optical axis due to the predetermined operation, so that the flare diaphragm is moved in the direction of the optical axis with respect to the second frame member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.