Imaging lens system
US9116327B2 · kind B2 · utility
1Cited by
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17Claims
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Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Nov 1, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/12
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens system includes, sequentially from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a third lens having a negative refractive power, wherein a viewing angle θ satisfies following condition,0.3<|tan θ|<0.8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.