Lens control system
US5144492A · kind A · utility
17Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Mar 8, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens control system is disclosed, which comprises a focusing lens drive for driving a focusing lens for focus control, a zooming lens drive for driving a zooming lens for zooming, a focusing lens position detector for detecting the position of the focusing lens, a zooming lens position detector for detecting the position of the zooming lens, and a control circuit for controlling, when the zooming lens position detector detects that the zooming lens is in a macro region, the focusing lens drive to stop the focusing lens at a predetermined position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.