Interchangeable lens unit for use in camera system
US5463442A · kind A · utility
11Cited by
2References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An interchangeable lens unit for use in a camera system which is arranged to drive a motor in the interchangeable lens on the basis of a signal supplied from a camera body. The interchangeable lens unit is provided with a circuit for continuously transmitting a specific signal to the camera body for at least the time period required to absorb a backlash when the direction of running of the motor is reversed with respect to the preceding direction of running of the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.