Auto-focus driving structure
US8805176B1 · kind B1 · utility
4Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2013 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jul 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B3/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An auto-focus driving structure for installing a lens has an optical axis. The auto-focus driving structure comprises a main body, a lens retainer, and a driving unit. The lens retainer is movably disposed in the main body. The driving unit includes a coil circuit board and a magnetic group. The coil circuit board has a plurality of printed coils. The plurality of printed coils corresponds to the position of the magnetic group, thus the lens retainer can be selectively moved with respect to a bottom portion of the main body through the driving unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.