Wide-angle lens module and endoscope
US7701650B2 · kind B2 · utility
127Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2008 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | May 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A wide-angle lens module includes a first lens and a second lens with negative refracting power, a third lens with positive refracting power, a fourth lens with negative refracting power, a fifth lens with positive refracting power, a sixth lens with positive refracting power, and a seventh lens with negative refracting power. The first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens are disposed in order from an object side to an image side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.