Spatial filtering apparatus and method of spatial filtering using the same

A spatial filtering apparatus includes a composite filter including first filter patterns respectively having a first phase profile, and second filter patterns respectively having a second phase profile, wherein the first filter patterns and the second filter patterns overlap with each other, wherei...

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Bibliographic Details
Main Authors Lee, Duhyun, Faraon, Andrei
Format Patent
LanguageEnglish
Published 29.03.2022
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:A spatial filtering apparatus includes a composite filter including first filter patterns respectively having a first phase profile, and second filter patterns respectively having a second phase profile, wherein the first filter patterns and the second filter patterns overlap with each other, wherein first light in a first polarization direction that is emitted on the composite filter is first spatially filtered by the first filter patterns, and wherein second light in a second polarization direction that is emitted on the composite filter is second spatially filtered by the second filter patterns.
Bibliography:Application Number: US201916362020