Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 20, 2023
0Patent Application Number
171767190
Date Filed
February 16, 2021
0Patent Citations
Patent Primary Examiner
An embodiment of a phase mask includes a light blocking layer disposed on a substrate, where the light blocking layer has a number of optically transmissive regions each configured as a first pattern. The first pattern includes two segments that have different phase configurations from each other, and the light blocking layer includes at least three angular orientations of the first pattern.
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