Phase filter, imaging optical system, and imaging system

A phase filter (101) comprises a structure of annular rings with rotational symmetry around the optical axis, the annular rings each having substantially parabolic cross-sections such that incident light beams are uniformly magnified on a focal plane and mutually overlap.

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Bibliographische Detailangaben
Hauptverfasser:	OOTA MITSUHIKO, SAKITA KOUICHI, SHIMANO TAKESH
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DIAGNOSIS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SIGNALLING SURGERY TRAFFIC CONTROL SYSTEMS TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	A phase filter (101) comprises a structure of annular rings with rotational symmetry around the optical axis, the annular rings each having substantially parabolic cross-sections such that incident light beams are uniformly magnified on a focal plane and mutually overlap.