发明授权
- 专利标题： Polarization separation element, a polarization conversion system, an optical element, and a projection display system
- 专利标题（中）： 偏振分离元件，偏振转换系统，光学元件和投影显示系统
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申请号： US09975731申请日： 2001-10-11
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公开(公告)号： US06621533B2公开(公告)日： 2003-09-16
- 发明人: Jason Kempton Slack , Marina Vladimirovna Khazova , Tamotsu Takatsuka , Keisuke Mitani , Kazuhiro Inoko , Graham John Woodgate , Masaharu Hara , Grant Bourhill , Emma Walton
- 申请人： Jason Kempton Slack , Marina Vladimirovna Khazova , Tamotsu Takatsuka , Keisuke Mitani , Kazuhiro Inoko , Graham John Woodgate , Masaharu Hara , Grant Bourhill , Emma Walton
- 优先权： GB0025252 20001013
- 主分类号： G02F11335
- IPC分类号： G02F11335
摘要：
The present invention provides a polarization separation element comprising a first array of prisms having a wedge-shaped cross-section, and a second array of prisms also having a wedge-shaped cross section. One of the prism arrays is an array of birefringent prisms. The present invention also provides a polarization conversion system having a polarization separation element of the above type for directing light having a first polarization in a first direction and for directing light having a second polarization different from the first polarization in a second direction different from the first direction; and one or more polarization conversion elements for converting light having the first and second polarizations to light having a substantially common output polarization. The polarization conversion system of the invention is suitable for use in a projection display system.
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