Camera optical lens including seven lenses of +−−+−+− or +−+−++− refractive powers
US11287616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2020 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Aug 15, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/64
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to the field of optical lenses and provides a camera optical lens sequentially including, from an object side to an image side, first to seventh lenses, the first and sixth lenses each having a positive refractive power and the second and seventh lenses each having a negative refractive power. The camera optical lens satisfies following conditions: −0.49≤f1/f2≤−0.25; 3.00≤f1/(f6+f7)≤4.50; and 2.00≤d4/d6≤10.00, where f1, f2, f6 and f7 denote focal lengths of the first, second, sixth and seventh lenses, respectively; d4 denotes an on-axis distance from an image side surface of the second lens to an object side surface of the third lens; and d6 denotes an on-axis distance from an image side surface of the third lens to an object side surface of the fourth lens. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.