Lens unit
US7729066B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Oct 19, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens unit includes a moveable section and an elastic element. The moveable section includes a lens barrel, a lens received in the lens barrel and a magnet fixedly mounted around the lens barrel. The moveable section is configured to telescopically move along an optical axis direction of the lens. The elastic element includes an attachment portion connecting with the moveable section, a holding portion for holding the movable section, and a plurality of elastic ribs capable of being elastically deformed during the telescopic movement of the moveable section. The elastic ribs of the elastic element are configured to restrain a movement of the moveable section, whereby the moveable section can stop at a focal position when an elastic force generated by the deformation of the at least one elastic rib is equal to a force for causing the moveable section to have the telescopic movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.