公开(公告)号：US20060092388A1

公开(公告)日：2006-05-04

申请号：US11161617

申请日：2005-08-10

Applicant: Chia-Chen Liao ,  Wei-Sheng Chang ,  Chu-Ming Cheng ,  Keng-Han Chuang ,  Loug-Sheng Liao ,  Sheng-Chieh Yang ,  Hsin-Jen Wang

Inventor： Chia-Chen Liao ,  Wei-Sheng Chang ,  Chu-Ming Cheng ,  Keng-Han Chuang ,  Loug-Sheng Liao ,  Sheng-Chieh Yang ,  Hsin-Jen Wang

IPC: G03B21/14

CPC classification number: G03B21/005 ,  G03B21/142 ,  G03B21/208 ,  G03B21/28

Abstract: An optical projection apparatus includes an illumination system, a projection lens unit, a reflective light valve, a first beam breaker and a second beam breaker. A light beam is provided by the illumination system. The projection lens unit and the reflective light valve are disposed on the transmission path of the light beam, and the reflective light valve is disposed between the illumination system and the projection lens unit. The first beam breaker and the second beam breaker are used to cut into the transmission path of the light beam from different directions to block a part of the light beam, and part of the light beam passes through the first beam breaker and the second beam breaker. The darker image projected by the optical projection apparatus has higher contrast and better uniformity.

Abstract translation: 光学投影装置包括照明系统，投影透镜单元，反射光阀，第一光束断路器和第二光束断路器。 照明系统提供光束。 投影透镜单元和反射光阀设置在光束的传输路径上，并且反射光阀设置在照明系统和投影透镜单元之间。 第一光束断路器和第二光束断路器用于从不同方向切入光束的传输路径以阻挡光束的一部分，并且光束的一部分穿过第一光束断路器和第二光束断路器 。 由光学投影装置投影的较暗图像具有较高的对比度和更好的均匀性。