Device for equalizing the back foci of objective and camera
US7236310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2003 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Feb 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for adjusting the back foci of an objective and a camera to one another has a housing by which a graphic pattern and an optics are mounted at a predetermined distance F′ from each other. The temperature compensation for the distance F′ is constant to ±2 mm for a temperature change of Delta 20° Celsius. The device also includes an apparatus for matching the back foci of an objective and a camera to each other, in which a housing has a fastening mechanism for fastening an object-side end of the objective and a graphic pattern is arranged in the housing on the end of the device opposite the fastening mechanism. The invention also includes a method for equalizing the back foci of an objective and camera using specific steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.