Wide-angle lens assembly
US10606028B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 2, 2018 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wide-angle lens assembly includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is with negative refractive power and includes a convex surface facing an object side and a concave surface facing an image side. The second lens is with positive refractive power. The third lens is with positive refractive power and includes a convex surface facing the object side. The fourth lens is with negative refractive power. The fifth lens is with positive refractive power and includes a convex surface facing the image side. The sixth lens is with negative refractive power. The wide-angle lens assembly satisfies: −1.5<f5/f≤−0.77, wherein f1 is an effective focal length of the first lens and f5 is an effective focal length of the fifth lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.