Interlocked zooming apparatus for use in stereoscopic cameras
US4999713A · kind A · utility
39Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/296
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an improved interlocked zooming apparatus used in a two-barrel type stereo scopic camera. The improved interlocked zooming apparatus includes an adjusting apparatus for adjusting the range of movement of one of the zoom lenses and an automatic image magnification adjusting apparatus for matching the rates of the change in size of images formed by two cameras. Since the sizes of the images in each of the wide-angle end and the telephoto end are first made uniform by the adjusting apparatus before sensing an image, the sizes of the images formed by both the cameras are uniform over the entire zoom region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.