Focus adjusting device for camera
US4307950A · kind A · utility
9Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1980 |
| Grant date | Dec 29, 1981 |
| Priority date | — |
| Expiry date | Oct 3, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B3/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention is to provide a focus adjusting device for a camera, particularly a focus adjusting device capable of fine adjustment of the position of the focal plane with ease. One of the characteristic features of the present invention is that the lens barrel is provided with an adjusting member such as a screw in screw-threaded relation thereto, so that all that is necessary to effect a fine adjustment of the initial position of the lens barrel relative to the camera body is to rotate the screw to adjust the length of that portion of the screw which projects outwardly of the lens barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.