Imaging lens system
US9134508B2 · kind B2 · utility
1Cited by
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14Claims
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Key dates
| Filing date | Oct 31, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Nov 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0035
- 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 positive refractive power or a negative refractive power, wherein a viewing angle θ satisfies following condition,0.7<|tan θ|<1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.