Optical barrel and optical apparatus
US8867152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optical barrel includes a first barrel member having a guiding portion to guide an optical element holding member in an optical axis direction, and a second barrel member disposed around the first barrel member and being relatively rotatable with the first barrel member. The second barrel member is provided with a cam portion to move the holding member, and with a bayonet engagement portion in an outer circumferential portion of the second barrel member. The first barrel member is provided with a flange portion, and with overhang portions and bayonet protrusion portions in plural areas of the flange portion. Each overhang portion extends along an outer circumferential surface of the second barrel member in the optical axis direction. Each bayonet protrusion portion extends inward in the radial direction and engaging with the bayonet engagement portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.