Seven-piece wide-angle camera lens
US10564395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A seven-lens wide-angle camera lens, having: a first lens with a negative refractive power; a second lens with a negative refractive power; a third lens with a refractive power; a fourth lens with a positive refractive power; a fifth lens with a refractive power; a sixth lens with a refractive power; and a seventh lens with a refractive power; and satisfies the following relational expressions: 0.06<CT3ΣTTL<0.15; and −0.7<f6/f7<−0.2; wherein, CT3 is a center thickness of the third lens that is on an optical axis; TTL is an axial distance from an object side surface to an imaging plane of the first lens; f6 is an effective focal length of the sixth lens; and f7 is an effective focal length of the seventh lens. By reasonably combining the 7 lenses, can obtain large field angles, which realizes miniaturization and favorable manufacturability while ensuring high resolution and imaging quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.