Optical system for field mapping and/or pupil mapping
US10656411B2 · kind B2 · utility
0Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2018 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Apr 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system for field imaging and/or pupil imaging has an optical axis, a stop plane and an image plane. The optical system includes a lens element system that has three lens element groups, each including at least one lens element. The lens element groups are spaced apart from each other along the optical axis between the stop plane and the image plane. The three lens element groups have a first lens element material and/or a second lens element material that differs from the first lens element material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.