Diffractive optical element
US6088160A · kind A · utility
7Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1852
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffractive optical element includes an optically functioning part including a diffraction grating and a flange part disposed around the optically functioning part. On an outer circumferential face of the flange part, there are at least three protrusions at respective different locations. The protrusions project outward from the outer circumferential face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.