Lens module
US9091836B2 · kind B2 · utility
2Cited by
25References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a lens module, including: a first lens having positive refractive power, an object-sided surface thereof being convex; a second lens having negative refractive power, an image-sided surface thereof being concave; a third lens having positive refractive power; a fourth lens having negative refractive power, an image-sided surface thereof being convex; and a fifth lens having negative refractive power, an image-sided surface thereof being concave, wherein the fourth lens satisfies Conditional Expression 1,where f is an overall focal distance of an optical system and f4 is a focal distance of the fourth lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.