Imaging lens and imaging apparatus
US9778438B2 · kind B2 · utility
1Cited by
1References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 2016 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | May 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging lens is constituted by, in order from the object side to the image side: a positive first lens group; a stop; a negative second lens group; and a positive third lens group. Only the second lens group moves in the direction of the optical axis to perform focusing operations. The second lens group is constituted by one or two positive lenses and one negative lens. The third lens group is constituted by, in order from the object side to the image side, two or three positive lenses and one negative lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.