EXIT-PUPIL EXPANDER TO DISTRIBUTE LIGHT TO LIQUID-CRYSTAL VARIABLE RETARDER

• Main Author: ALEX HEGYI
• Format: Patent
• Language: English; Japanese
• Published: 22.07.2019
• Subjects: COLORIMETRY; 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; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; RADIATION PYROMETRY; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING

To provide an optical device with a liquid-crystal variable retarder coupled to an exit-pupil expander used to expand light.SOLUTION: An optical device includes a liquid-crystal variable retarder 100. An exit-pupil expander 102 is optically coupled to the liquid-crystal variable retarder. The exit-pupil expander includes: at least one optical input feature 106 that receives reference light 105 from a reference light source 104; and one or more optical coupling elements 110 coupled to receive the reference light from the reference light source and expand the reference light to one or more spatially separated regions of the liquid-crystal variable retarder.SELECTED DRAWING: Figure 1 【課題】光を拡張する射出瞳拡張器と結合した液晶可変リターダを備えた光学素子を提供する。【解決手段】光学デバイスは、液晶可変リターダ１００を含み、射出瞳拡張器１０２が、液晶可変リターダに光学的に結合され、射出瞳拡張器は、基準光源１０４からの基準光１０５を受け取る少なくとも１つの光学入力フィーチャ１０６と、基準光源から基準光を受け取り、基準光を液晶可変リターダの１つ以上の空間的に分離された領域に拡張するように結合された１つ以上の光結合素子１１０と、を含む。【選択図】図１