Lens system with six lenses
US9791668B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Sep 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to a lens system comprising a first lens group and a second lens group from an object side to an image side successively; wherein, the first lens group comprises a first lens, a second lens and a third lens from the object side to the image side successively; the second lens group comprises a fourth lens, a fifth lens and a sixth lens from the object side to the image side successively; the first lens has a positive focal power and the second, the fifth, and the sixth lens have a negative focal power, and the object side surface of the first and the second lens are convex, the image side surface of the fifth lens is convex, the object side surface of the fifth and the sixth lens are concave, and the image side surface of the second and the sixth lens are concave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.