Lens position sensor for infrared cameras
US8063367B2 · kind B2 · utility
1Cited by
2References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Oct 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A lens position sensor for infrared or other types of cameras, which is particularly useful in lens assemblies that have relatively limited axial travel between near field and far field lens focus positions. The camera includes a magnet or other stimulator coupled to a rotatable lens that extends within a magnet plane where the magnet plane is not normal to the optical axis of the lens. A magnetic or other sensor senses the position of the magnet, which is indicative of the lens position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.