Zoom and focus control method and system
US6993256B2 · kind B2 · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2003 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Sep 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A focus lens and a zoom lens group having a first zoom lens and a second zoom lens are controlled separately from one another in an internal-focus camera. The positions of the focus lens and the second zoom lens in the zoom lens group are tracked, and are controlled to approach no closer to one another than a minimum safe distance to avert collisions between the focus lens and the second zoom lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.