Camera optical lens including eight lenses of +−+−−−+− refractive powers
US11513323B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Apr 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens; a third lens; a fourth lens; a fifth lens; a sixth lens; a seventh lens; and an eighth lens. The camera optical lens satisfies following conditions: 1.95≤f1/f≤3.20; f2≤0; and 1.55≤n7≤1.70, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f2 denotes a focal length of the second lens; and n7 denotes a refractive index of the seventh lens. The present disclosure can achieve ultra-thin, wide-angle lenses having a big aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.