Optical systems employing stepped diffractive surfaces
US6462874B1 · kind B1 · utility
38Cited by
19References
119Claims
0Family size
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Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical systems employing stepped diffractive surfaces (13) are provided. Ray tracing through such systems is performed using the grating equation to represent the stepped diffractive surface (SDS). In this way, the SDS can be used to correct a variety of monochromatic and chromatic aberrations by balancing the aberrations of the SDS against the aberrations of non-stepped optical surfaces in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.