公开(公告)号：WO1996003676A1

公开(公告)日：1996-02-08

申请号：PCT/US1995009631

申请日：1995-07-25

Applicant: PROXIMA CORPORATION

Inventor： PROXIMA CORPORATION ,  MINICH, Arthur, P. ,  KAPPEL, David, W. ,  HARGIS, David, E. ,  ASSA, Shlomo ,  SHAPIRO, Leonid

IPC: G03B21/28

CPC classification number: H04N9/3129 ,  G02B19/0028 ,  G02B19/0057 ,  G02B19/009 ,  G02B23/06 ,  G02B27/0927 ,  G02B27/0944 ,  G02B27/0961 ,  G02B27/1033 ,  G02B27/1053 ,  G02B27/1086 ,  G02B27/123 ,  G02B27/149 ,  G03B21/008 ,  G03B21/2033 ,  G03B33/06 ,  H04N9/3161

Abstract: An image projection system includes a source of polarized light and a spatial light modulator, having an alignment layer, wherein the polarized light is aligned with the alignment layer to allow the light to pass without the need for polarizers. Three different colored images may be produced by three separate polarized light sources (222A, 226A, 230A) with corresponding light valve super-imposed. Light sources may either be maintained activated or may be sequenced at high input energies for short intervals to reduce average energy costs. A microlaser array (922) may be coupled with a beam shaper (936) to further increase brightness of the image. The beam shaper may include a binary phase plate to modify the shape and intensity profile of the projection light beam.

Abstract translation: 图像投影系统包括偏振光源和具有取向层的空间光调制器，其中偏振光与取向层对齐，以允许光通过而不需要偏振器。 三个不同的彩色图像可以通过三个分离的偏振光源（222A，226A，230A）产生，其中对应的光阀被强加。 光源可以被维持激活，或者可以在高输入能量下以短间隔排序，以降低平均能量成本。 微型激光器阵列（922）可以与光束整形器（936）耦合以进一步增加图像的亮度。 光束整形器可以包括用于修改投影光束的形状和强度分布的二元相位板。