Aspherical optical surfaces and optical scanners
US9158109B2 · kind B2 · utility
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3References
30Claims
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Key dates
| Filing date | Jul 17, 2013 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical systems with aspherical optical elements are described. The aspherical optical elements have surfaces in which the in-plane radius of curvature spatially varies and the in-plane cross section surface profile is characterized in that the multiplication of the cosine of the incidence angle raised to a non-zero exponent by the in-plane radius of curvature varies less than twenty percent between any two points on the in-plane cross section surface profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.