Control system for an objective of a camera
US6148151A · kind A · utility
15Cited by
4References
32Claims
0Family size
Inventor
Key dates
| Filing date | Dec 7, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Dec 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control system for an objective of the camera, in particular a film camera, includes one or several drive units for automatically positioning at least one lens ring, e.g., for adjusting the focus position, the opening of the iris diaphragm and/or the focal length. The drive units can be used to adjust the lens ring(s) to a predefined set position. A device coupled to each of the lens rings determines the actual position of the lens rings relative to the objective and converts this position into a measuring output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.