公开(公告)号：US06478428B1

公开(公告)日：2002-11-12

申请号：US09952071

申请日：2001-09-12

申请人： Jong Su Yi ,  Dong Ha Kim ,  Yong Sik Moon ,  Kwang Joe Jeon ,  Jong Myung Park ,  Hark Lim Choi

发明人： Jong Su Yi ,  Dong Ha Kim ,  Yong Sik Moon ,  Kwang Joe Jeon ,  Jong Myung Park ,  Hark Lim Choi

IPC分类号： G03B2114

CPC分类号： H04N9/3105 ,  G02B27/283 ,  H04N9/3167

摘要： Disclosed is an apparatus for projection display using reflection type LCDs. The apparatus for projection display using reflection type LCDs according to the invention comprises an illuminating device including a lamp and a polarizing element for illuminating S wave or P wave, a color splitter/synthesizer, including the reflection type LCDs for providing an image corresponding to an inputted image and converting a polarizing state of incident light when reflecting the light, a retarder stack for differentiating the polarized state of a predetermined color from the incident light, and polarizing beam splitters composed of a material having a photoelastic constant less than 0.03×10−6 mm2/N at a wavelength of 589.3 nm and a minimum transmittance higher than 90% in transmitting the thickness of 25 mm at a wavelength ranged 0.42 &mgr;m-0.70 &mgr;m for performing color split, color synthesis and analysis, and a projector for projecting the image passed through the color splitter/synthesizer onto a screen.

摘要翻译： 公开了一种使用反射型LCD的投影显示装置。 根据本发明的使用反射型LCD的投影显示装置包括照明装置，其包括用于照亮S波或P波的灯和偏振元件，分色器/合成器，包括用于提供对应于 输入图像并且在反射光时转换入射光的偏振状态，用于将预定颜色的偏振状态与入射光进行微分的延迟器叠层;以及偏振分束器，其由光弹性常数小于0.03×10 -6 mm2 / N，在波长为589.3nm处的透射率最高的透射率高于90％，在用于进行颜色分割，颜色合成和分析的波长范围为0.42mum-0.70μm的波长的25mm厚度的最小透射率，以及用于投影图像的投影仪 通过分色器/合成器通过屏幕。