Image pickup lens, image pickup unit and cellphone terminal equipped therewith
US6885508B2 · kind B2 · utility
38Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2003 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Oct 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/55
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image pickup lens that has therein, in the order named from an object side, an aperture stop, a meniscus-shaped first lens having positive refracting power whose convex surface faces an object and a second lens having positive or negative refracting power whose convex surface faces the object, wherein each of the first lens and the second lens has at least one aspheric surface and satisfies the following condition expression f1/|f2|<1.0 wherein, f1 is a focal length of the first lens, f2 is a focal length of the second lens and f is a focal length of the entire system of the image pickup lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.