Optical sight for television camera with automatic geometry and convergence correction adapted for bi-format filming, and camera equipped with such a sight
US5034821A · kind A · utility
1Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | May 15, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The optical sight for the correction of the geometry of the convergences of a color camera according to the invention is such that it is adapted to the two most common formats and therefore usable in bi-format 4/3 and 16/9 cameras: the sight is constituted of a group of elementary motifs constituted of a central zone of n lines of p motifs and adjacent zones formed of two lines of p motifs used in addition to the central zone for the 4/3 format, and two columns of n motifs, used in addition to the central zone for the 16/9 format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.