Photographic taking lens driving means
US4519691A · kind A · utility
17Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1984 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Mar 2, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention describes a taking lens driving system using permanent magnets provided inside of the lens barrel. A plurality of movable coils surrond the circumference of the taking lens and are arranged so as to transverse the magnetic flux of the permanent magnets. At least one of the movable coil members drives the taking lens unit, while the other coils are used to the range of movement of the movable coil member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.