AF driving mechanism of camera
US7103273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Mar 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A worm gear is provided on a rotating shaft of an AF motor. A first supporting cylinder includes a gear portion and a receiving portion. A wheel gear, which is in engagement with the worm gear, is formed on an outer surface of the gear portion. A slit is formed at the receiving portion. A second supporting cylinder includes a supported portion which is placed in the receiving portion of the first supporting cylinder, and a receiving portion which supports an AF coupler. A gear is in engagement with a portion which connects the supported portion and the receiving portion of the 2nd supporting cylinder. A clutch spring is wound around the supported portion, being in contact with the outer surface of the supported portion. Both ends of the clutch spring cross each other and are in engagement with a pair of walls, of the slit, which are parallel to an axis of the receiving portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.