Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Stephen Bagnald
John Michael Miller
Date of Patent
September 19, 2023
Patent Application Number
17303194
Date Filed
May 24, 2021
Patent Citations
Patent Primary Examiner
Patent abstract
A diffractive optical element may include sub-wavelength period stack-and-gap structured layers providing transmissive phase delay at a wavelength. The sub-wavelength period stack-and-gap structured layers may include a set of thin anti-reflection layers that are index matched to an environment or a substrate over a range of fill factors of the sub-wavelength period.
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