Lens barrel for an imaging apparatus
US7872683B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2006 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Dec 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/002
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
At least one object of the present invention is to provide a lens barrel, including: a fixed frame (21) having a fixed cylinder (21); a telescopic cylinder (22, 23, 24, etc.) configured to be accommodated within the fixed cylinder (21); a plurality of lens groups (11, 12) configured to be retained in the telescopic cylinder; a lens driving device (51, 52, etc.) configured to drive the plurality of lens groups along a optical axis of the telescopic cylinder between a collapsed position and an extended position; and two retractable lens groups (13, 14) configured to be retracted into the telescopic cylinder when the telescopic cylinder is in the extended position and configured to be retracted out of the telescopic cylinder when the telescopic cylinder is in the collapsed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.