Diffractive optical element and a method for producing same
US6707608B1 · kind B1 · utility
14Cited by
7References
66Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Feb 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/1857
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a method for producing a diffractive optical element, including forming first and second gratings, substantially in mutual registration, of at least first and second optical materials, such that for predetermined two or more wavelengths, the diffractive optical element has desired phase retardations, thereby avoiding the generation of chromatic aberrations. The invention further provides a diffractive optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.