Image pickup apparatus including bayonet coupling section in lens barrel, and accessory
US8858101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Oct 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/565
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image pickup apparatus which can provide a rotational operation member around a lens barrel formed with a bayonet coupling section without increasing the apparatus size. Three female pawl grooves and three open grooves are formed in a mount base. A first ring member is formed with three male pawl portions for being engaged with the female pawl grooves and open grooves. An operation ring member is rotationally operated, and a second ring member rotates in unison therewith. Photo reflectors detect rotation of the second ring member. A restriction unit restricts rotation of the first ring member when the mount base and the operation ring member are bayonet-coupled. A rotation locking member restricts rotation of the operation ring member and the second ring member with respect to the first ring member in accordance with an operation for releasing rotation restriction of the first ring member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.