PHASE NOISE TYPE WIDE SPECTRAL BAND WIDTH OPTICAL LOW-PASS ANTI-ALIASING FILTER

PROBLEM TO BE SOLVED: To restrain aliasing artifact at low cost over a wide spectral range by providing material for forming a transparent substrate and plural transparent spots and satisfying a specified condition. SOLUTION: The spots are irregularly arranged on the substrate for making a phase dif...

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Bibliographische Detailangaben
Hauptverfasser:	NUTT ALAN C G, REVELLI JR JOSEPH FRANCIS, HIRSH JEFFREY I
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To restrain aliasing artifact at low cost over a wide spectral range by providing material for forming a transparent substrate and plural transparent spots and satisfying a specified condition. SOLUTION: The spots are irregularly arranged on the substrate for making a phase difference between a light wave front transmitted through the spot and a part other than the spot of the substrate, and the phase difference satisfies the condition O=π. In such a case, O is the phase difference caused by the spot in specified wavelength λO satisfying λB