公开(公告)号：US20160266398A1

公开(公告)日：2016-09-15

申请号：US14658017

申请日：2015-03-13

Applicant: Yarn Chee Poon ,  Steve Robbins ,  Angus Wu ,  Jeb Wu ,  James Webster ,  Richard Andrew Wall ,  Richard James ,  Robin Hsiung ,  RuPing Huang ,  Freeway Lin

Inventor： Yarn Chee Poon ,  Steve Robbins ,  Angus Wu ,  Jeb Wu ,  James Webster ,  Richard Andrew Wall ,  Richard James ,  Robin Hsiung ,  RuPing Huang ,  Freeway Lin

IPC: G02B27/28 ,  G02B27/01 ,  G02B5/30 ,  G02B27/22

CPC classification number: G02B27/283 ,  G02B5/3016 ,  G02B5/3083 ,  G02B27/0172 ,  G02B27/0961 ,  G02B27/225 ,  G02B27/286 ,  G02B2027/0178

Abstract: An optical light engine includes a pair of lenticular microlenslet arrays (MLAs) located on each side of a polarization converter. Non-polarized light from a source in the engine is focused by the first MLA onto cells of the polarization converter which converts the light to a common state of polarization to increase efficiency and improve contrast in the system. A half wave retarder is included on the polarization converter to change the polarization of any light that is reflected from downstream optical components to match that of the forward propagating light. The second MLA, which includes a relatively large number of microlenslet elements, collects the light from the polarization converter and homogenizes the light to be highly uniform when received at a downstream imaging panel in the light engine such as a liquid crystal on silicon (LCOS) panel.

Abstract translation: 光学引擎包括位于偏振转换器的每一侧上的一对透镜微透镜阵列（MLAs）。 来自发动机源的非偏振光由第一MLA聚焦到偏振转换器的单元上，其将光转换成公共的偏振状态，以提高效率并改善系统中的对比度。 在偏振转换器中包括半波延迟器，以改变从下游光学部件反射的任何光的偏振，以与正向传播光的偏振相匹配。 包括相对大量的微透镜元件的第二MLA收集来自偏振转换器的光，并且当光接收到诸如硅上液晶（LCOS）的光引擎中的下游成像面板时，将光均匀化为高度均匀， 面板。