Lens and manufacturing method thereof
US10564398B2 · kind B2 · utility
0Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Dec 27, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/19628
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens including a first lens group and a second lens group is provided. The first lens group is disposed between a magnified side and a minified side. The second lens group is disposed between the first lens group and the minified side. The lens includes six or less lens elements, and at least four of the six or less lens elements are aspheric lenses. A field of view of the lens is in a range between 100 degrees and 165 degrees, and the second lens group has at least one spherical lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.