公开(公告)号：WO1998020391A1

公开(公告)日：1998-05-14

申请号：PCT/US1997020197

申请日：1997-11-04

Applicant: KENT STATE UNIVERSITY

Inventor： KENT STATE UNIVERSITY ,  BOS, Philip, L. ,  CHEN, Jianmen ,  JOHNSON, David, L. +di ,  GLENN, William, E. ,  HOLTON, Carvel, E. ,  SMITH, Brett, E.

IPC: G02F01/1337

CPC classification number: G02F1/1396 ,  G02F1/133753 ,  G02F1/292 ,  G02F2201/305 ,  G02F2203/48

Abstract: A reflective liquid crystalline diffractive light valve for use in a diffractive projection system (50). The liquid crystal cell (64) includes a transparent substrate and a reflective substrate treated to provide alternating stripes which cooperate with the liquid crystal to form liquid crystal domains extending across the thickness of the cell that will produce an appropriate phase difference in light reflected by the cell (64), irrespective of the polarization of incident light. The techniques embodied in the present invention are applicable to the creation of electrically controllable diffractive optical elements for ray optic, integrated optic or fiber optic utilization operated in either transmission or reflection. Diffractive patterns may be lithographically or interferometrically generated.

Abstract translation: 一种用于衍射投影系统（50）的反射型液晶衍射光阀。 液晶单元（64）包括透明基板和反射基板，所述反射基板被处理以提供与液晶协作的交替条纹，以形成横跨单元厚度延伸的液晶畴，该晶体畴将产生由 单元（64），与入射光的偏振无关。 本发明中体现的技术可用于创建用于在传输或反射中操作的射线光学，集成光学或光纤利用的电可控衍射光学元件。 衍射图案可以是光刻的或干涉测量的。