Mobile lens unit with detection device
US7679849B2 · kind B2 · utility
3Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 2008 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | May 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0356
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens unit includes a lens barrel for receiving at least one lens and a motor arranged to displace the lens barrel between various positions. Displacement of the lens barrel is proportional to an electrical signal applied to the motor. A first conductor is fixed to the lens barrel and is arranged to make electrical contact with a second conductor when the lens barrel is at an initial position. A processor is arranged to detect a change in the electrical contact, to determine an electrical signal at the time of the change and to generate an electrical signal corresponding to the desired displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.