WIDE FIELD-OF-VIEW POLARIZATION SWITCHES AND METHODS OF FABRICATING LIQUID CRYSTAL OPTICAL ELEMENTS WITH PRETILT

• Main Authors: KOMANDURI RAVI K, OH CHUL-WOO
• Format: Patent
• Language: Chinese; English
• Published: 26.03.2021
• 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; 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 switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a first liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules that are rotated about respective axes parallel to a central axis, where the rotation varies with an azimuthal angle about the central axis. The switchable waveplate additionally comprises a plurality of electrodes to apply an electrical signal across said first liquid crystal layer. 一种可切换光学组件包括可切换波片，该可切换波片被配置为被电激活和去激活以选择性地改变入射在其上的光的偏振状态。可切换波片包括第一表面和第二表面以及被设置在第一表面与第二表面之间的第一液晶层。第一液晶层包括多个液晶分子，该多个液晶分子围绕与中心轴平行的相应轴旋转，其中该旋转随着围绕中心轴的方位角而变化。可切换波片另外包括多个电极以跨所述第一液晶层地施加电信号。