Focus detecting device using adjustable inclined sensing means
US4728785A · kind A · utility
17Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1986 |
| Grant date | Mar 1, 1988 |
| Priority date | — |
| Expiry date | Dec 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/346
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An adjusting screw for adjusting the inclination of a sensor unit body including sensing means for producing the information about the focus adjusted state on the basis of a light beam from an objective lens is moved with the sensor unit body perpendicularly to the optic axis of the objective lens, whereby adjustment of the optic axis of the objective lens is accomplished. At least two adjusting means are provided for inclining the sensing means itself at a predetermined angle with respect to the optic axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.