Imaging lens
US9341822B2 · kind B2 · utility
9Cited by
0References
6Claims
0Family size
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Key dates
| Filing date | Dec 12, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Dec 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens includes a first lens group having positive refractive power and a second lens group having negative refractive power, arranged in this order from an object side to an image plane side. The first lens group includes a first lens having positive refractive power, a second lens having positive refractive power, and a third lens having negative refractive power. The second lens group includes a fourth lens having positive refractive power, a fifth lens, and a sixth lens having negative refractive power. The first lens has a specific focal length. The first to third lenses have specific Abbe's numbers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.