Optical apparatus
US5708870A · kind A · utility
7Cited by
8References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1994 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Jan 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical apparatus comprises a zoom lens for effecting magnification change, a focusing lens for effecting focus adjustment, a first motor for moving the focusing lens, a second motor for moving the zoom lens, and detecting mechanism for detecting the reference positions of the focusing lens and the zoom lens, the detecting mechanism being used in common to the two lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.