Camera capable of automatic focal distance correction utilizing stored correction data selected responsive to a direction of movement of a taking lens system
US5359381A · kind A · utility
7Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1993 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Apr 26, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/102
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a camera of the present invention, an extension amount of a focusing lens is determined from a plural kind of table data for determining the extension amount of the lens from information on the distance to an object and information on the set focal distance. The camera has a storage unit for storing the zooming direction of an optical system during zooming, a selection unit for selecting data from the plural kind of table data on the basis of the contents stored in the storage unit, and an arithmetic unit for computing an extension amount of a focusing lens on the basis of the data selected by the selection unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.