Lens barrel and camera including it
US7852578B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2007 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens barrel includes a plurality of lens groups (1, 2), lens frames (1a, 2a) to hold the plurality of lens groups, respectively, a lens driving apparatus to drive the plurality of lens frames and a fixed member (5) to hold the lens driving apparatus. The lens driving group includes a rotational member (6) which is forwardly moved while rotating relative to the fixed member (5), a linearly moving guide member (7) which moves with the rotational member (6) in the optical axial direction while limiting rotation of the lens frames and is not capable of rotating, and a linearly moving-guide biasing member (8) which is capable of moving in the optical axial direction relative to the linearly moving guide member and is configured to limit rotation. The linearly moving-guide biasing member has a resilient structure configured to bias the linearly moving guide member in the optical axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.