Telephoto camera lens having a plurality of lenses providing telephoto performance
US10605963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2016 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jul 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A telephoto camera lens sequentially includes from an object side to an image side, a first lens with positive optical power, an object-side face of the first lens being convex; a second lens with optical power; a third lens with optical power; a fourth lens with optical power; a fifth lens with optical power, an object-side face of the fifth lens being concave; and a sixth lens with optical power, an object-side face of the sixth lens being concave near an axis, and an image-side face of the sixth lens being convex near the axis. The telephoto lens satisfies: 0.75<TTL/f<1.0, and ImgH/f<0.55, wherein TTL represents a distance between the object-side face of the first lens and an imaging face along the axis, f represents an effective focal length of the telephoto camera lens, and ImgH is half of a diagonal line of an effective pixel region on the imaging face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.