LIQUID CRYSTAL ELEMENT, PHASE MODULATION DEVICE, AND LIQUID CRYSTAL ELEMENT CONTROL METHOD

A phase modulation device (1) includes an image data generator (2), a controller (3), a light reception signal detector (4), and a liquid crystal element (5). The image data generator (2) generates image data (DD). The controller (3) generates a gradation control signal (GCS) based on the image data...

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Bibliographische Detailangaben
1. Verfasser:	NAGOYA, Takashi
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A phase modulation device (1) includes an image data generator (2), a controller (3), a light reception signal detector (4), and a liquid crystal element (5). The image data generator (2) generates image data (DD). The controller (3) generates a gradation control signal (GCS) based on the image data (DD). The liquid crystal element (5) includes a first substrate (20) and a light receiver (6). The first substrate (20) has a pixel region (21) in which a plurality of pixel electrodes (24) constituting pixels are arranged. The light receiver (6) photoelectrically converts light (SL) with which the pixel region (21) is irradiated to generate a light reception signal (LRS). The light reception signal detector (4) generates a drive control signal (SCS) based on the light reception signal (LRS). The liquid crystal element (5) changes a wavefront (WF) of the light (SL) with which the pixel region (21) is irradiated by applying different drive voltages (DV) to the plurality of pixel electrodes (24) based on the gradation control signal (GCS).