发明名称 |
Head-up display with narrow band reflective polarizer |
摘要 |
A head-up display includes a projection system and a window having a target area where a reflective polarizer is positioned to reflect light from the projection system to a viewing area. Light from the projection system is p-polarized and strikes exposed window surface(s) at an acute angle to reduce or eliminate multiple or "ghost" images. The acute angle is closely matched to a Brewster angle of the exposed window surface(s). The reflective polarizer includes a multilayer stack with refractive indices of individual layers chosen to reflect p-polarized light substantially more than s-polarized light over a wide angular range that includes the acute angle. The reflective polarizer also can reflect infrared light to reduce cabin heating from solar radiation.
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申请公布号 |
US7123418(B2) |
申请公布日期 |
2006.10.17 |
申请号 |
US20050192942 |
申请日期 |
2005.07.29 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
WEBER MICHAEL F.;OUDERKIRK ANDREW J.;WHEATLEY JOHN A.;BRODD JONATHAN |
分类号 |
G02B27/14;G02B5/30;G02B27/00;G02B27/01;G02F1/1335 |
主分类号 |
G02B27/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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