Optical imaging lens
US10901179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical imaging lens includes a first lens element to a fourth lens element from an object side to an image side in order along an optical axis, and each lens element has an object-side surface and an image-side surface. A periphery region of the image-side surface of the first lens element is convex, the third lens element has positive refracting power, the fourth lens element has positive refracting power, and a periphery region of the object-side surface of the fourth lens element is concave. TTL is a distance from the object-side surface of the first lens element to an image plane along the optical axis, T2 is a thickness of the second lens element along the optical axis, and the Abbe number of the second lens element, the third lens element and the fourth lens element is υ2, υ3 and υ4 respectively to satisfy υ3+υ4−υ2≤40.000 and TTL/T2≤8.000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.