Lens drive device
US8159764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Oct 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens drive device may include a movable body holding a lens, a fixed body movably holding the movable body, and a drive mechanism for driving the movable body in the optical axis direction. The drive mechanism may include a drive magnet part formed in a substantially triangular prism shape and disposed at least in one of four corners of the lens drive device, a drive coil wound around in a substantially triangular tube shape and attached to the movable body, and a coil protection member attached to at least one of an object side and an opposite-to-object side of the drive coil. The coil protection member may include a first coil protection end part and a second coil protection end part which are superposed on an outer side end of the drive coil or protruded toward an outer side from the outer side end of the drive coil to prevent the drive coil from contacting with the fixed body such as a case body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.