Lens module
US8587872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2011 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Nov 25, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens module includes a first lens group with a positive refractive power, a second lens group with a negative refractive power, and a third lens group with a positive refractive power. The first lens group essentially consists of a first lens with a negative refractive power, a second lens with a positive refractive power and a third lens with a positive refractive power arranged in order from a magnified side to a reduced side. The second lens group essentially consists of a fourth lens with a negative refractive power and a fifth lens with a positive refractive power arranged in order from the magnified side to the reduced side. The third lens group essentially consists of a sixth lens with a positive refractive power and a seventh lens with a positive refractive power arranged in order from the magnified side to the reduced side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.