Imaging lens
US9746641B2 · kind B2 · utility
5Cited by
0References
21Claims
0Family size
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Key dates
| Filing date | Aug 27, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Sep 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens includes a first lens group having positive refractive power; a second lens group having negative refractive power; and a third 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 negative refractive power, and a third lens having positive refractive power. The second lens group includes a fourth lens and a fifth lens. The third lens group includes a sixth lens having negative refractive power and a seventh lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.