LIQUID CRYSTAL ELEMENT, OPTICAL HEAD DEVICE, AND VARIABLE OPTICAL MODULATION ELEMENT

• Main Authors: TAO, YUKIHIRO, YUYAMA, KENICHI
• Format: Patent
• Language: English; French; Japanese
• Published: 09.07.2009
• Subjects: 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; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A liquid crystal element includes a transparent substrate and a liquid crystal layer which is composed of a liquid crystal material and includes a concavo-convex portion having a periodic undulation. The concavo-convex portion of the liquid crystal layer is located in a transparent substrate side an...