公开(公告)号：US20170168339A1

公开(公告)日：2017-06-15

申请号：US15442082

申请日：2017-02-24

Applicant: Lumentum Operations LLC

Inventor： Keith Anderson ,  John Michael Miller ,  Hery Djie ,  Lu Tian

IPC: G02F1/13363 ,  G02F1/1341 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1343

CPC classification number: G02B5/3058 ,  G02F1/133553 ,  G02F1/13363 ,  G02F1/134309 ,  G02F1/13439 ,  G02F2001/133567 ,  G02F2001/133638 ,  G02F2201/305 ,  G02F2201/307 ,  G02F2203/50

Abstract: A sub-wavelength thin-film metal grating is placed inside a liquid crystal variable optical retarder at a selected distance from a reflective electrode to form a reflective half wave plate, thereby reducing polarization dependence of the optical retardation generated by the variable optical retarder. The approach enables to form within the device the reflective half wave plate that is suitably thin without modifying the reflective electrode of the device.

公开(公告)号：US10473839B2

公开(公告)日：2019-11-12

申请号：US15442082

申请日：2017-02-24

Applicant: Lumentum Operations LLC

Inventor： Keith Anderson ,  John Michael Miller ,  Hery Djie ,  Lu Tian

IPC: G02B5/30 ,  G02F1/13363 ,  G02F1/1335 ,  G02F1/1343

Abstract: A sub-wavelength thin-film metal grating is placed inside a liquid crystal variable optical retarder at a selected distance from a reflective electrode to form a reflective half wave plate, thereby reducing polarization dependence of the optical retardation generated by the variable optical retarder. The approach enables to form within the device the reflective half wave plate that is suitably thin without modifying the reflective electrode of the device.