Optical lens
US11520141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Apr 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/18
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is an optical lens. The optical lens is provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, which are sequentially arranged from an object side to an image side along an optical axis. The first lens is a spherical lens having a negative focal power, the second lens is an aspheric lens having a meniscus shape bent towards an image surface, the third lens is an aspheric lens having a meniscus shape bent towards an object surface, the fourth lens is an aspheric lens having a positive focal power, the fifth lens is an aspheric lens having a positive focal power, the sixth lens is an aspheric lens having a negative focal power, and the seventh lens is an aspheric lens having a positive focal power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.