Patent · US Active

Aperture stop

US10222517B2 · kind B2 · utility

2Cited by

3References

39Claims

0Family size

Assignee

CAMTEK Ltd. · IL

Inventors

Tomer Gilad · Kiryat Tivon, IL
Shimon Koren · Haifa, IL

Key dates

Filing date	Mar 27, 2017
Grant date	Mar 5, 2019
Priority date	—
Expiry date	Mar 27, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An aperture stop that includes a non-circular region that comprises at least one opaque region and at least one opening region; wherein each point in the at least one opening region is (a) mapped to an angle of illumination and (b) is associated with a corresponding point in the at least one opaque region that. mapped to an angle of specular reflectance from the angle of illumination mapped to the opening point.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.