Position sensing device and lens driving module using the same
US7663820B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2008 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Jul 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34753
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a position sensing device including a sensing unit that is mounted on one side of a lens barrel, which is inserted into a lens housing portion of a base so as to be vertically driven, and includes a light receiving section and a light emitting section which are provided to face each other; a driven grid that has a plurality of slits formed therein and is mounted on the lens barrel; and a fixed grid that has a plurality of slits formed therein and is fixed and coupled to the inside of the sensing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.