Zoom lens
US6898023B2 · kind B2 · utility
3Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/143505
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a small, thin, light and low cost zoom lens suitable for cellular telephones, portable information terminals, etc. In particular, it can provide a small and thin, high performance zoom lens having a zoom ratio of approximately 2, a depth of less than 9 mm during shooting and in storage, a total lens length of less than 30 mm, an angle of view of approximately 61°, and a F number of approximately 2.8 providing a sufficient light, with various aberrations all suitably corrected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.