PHASE MODULATION DEVICE

The phase modulation device (1) includes an image data generator (2), a gradation data generator (3), and a reflective liquid crystal element (10) including a pixel region (21). The pixel region (21) includes a plurality of pixel blocks (25) and a blank area (41). The image data generator (2) genera...

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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:	The phase modulation device (1) includes an image data generator (2), a gradation data generator (3), and a reflective liquid crystal element (10) including a pixel region (21). The pixel region (21) includes a plurality of pixel blocks (25) and a blank area (41). The image data generator (2) generates image data (DD) corresponding to a distribution of phase change amount or a distribution of phase velocity based on information data (JD). The gradation data generator (3) generates gradation data (DS) corresponding to each pixel based on the image data (DD). The pixel block (25) changes a wavefront (WF) of a signal light (SL) based on a driving voltage (DV) of the voltage pattern corresponding to the gradation data (DS). In the blank area (41), a same driving voltage is applied to a pixel electrode (24) of the pixel block (25) and the adjacent pixel electrode (24).