Lens barrel
US8483555B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 2011 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0069
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens barrel that reinforces a connecting part between a movable lens barrel and a fixed barrel, without requiring a new drive source, is disclosed. The lens barrel includes: a rotary barrel fitted in a fixed barrel; a cam mechanism for connecting the rotary barrel and the fixed barrel; and a ring member. The fixed barrel includes an engagement section and a rotary drive mechanism for revolving the ring member. The rotary drive mechanism locates the ring member to an engagement-enabling position when a connection by the cam mechanism reaches a predetermined position, directing the connection from a first end to a second end of an idle revolving area, the first end continuing to an advancement/retreat movement area; and to a release position, when the connection by the cam mechanism is located at the first end of the idle revolving area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.