OPTICAL FILTER

PURPOSE:To vary a passing wavelength range by arranging plural polarizers and plural electro-optic crystals alternately in the traveling direction of light, and varying voltages applied to the respective crystals. CONSTITUTION:Plural, e.g. 2 crystals C1 and C2 which have such electro-optic effect th...

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Bibliographische Detailangaben
1. Verfasser:	MATSUNAGA TOORU
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PURPOSE:To vary a passing wavelength range by arranging plural polarizers and plural electro-optic crystals alternately in the traveling direction of light, and varying voltages applied to the respective crystals. CONSTITUTION:Plural, e.g. 2 crystals C1 and C2 which have such electro-optic effect that birefrigence is caused by an electric field and linear polarized incident light becomes elliptical polarized light on a projection surface and plural, e.g. three polarizers 0, 1, and 2 which transmit only specific polarized components are arranged alternately in series in the traveling direction of the light. The crystals are so directed that the light is influenced by the electrically induced birefrigence, and the axes of polarization of the polarizers are set perpendicular or parallel to the polarization direction of the incident light; and voltages applied to the crystals C1 and C2 through electrodes E1 and E2 are varied to vary the passing band range.