发明名称 Transmissive screen and rear projector
摘要 To provide an excellent transmissive screen allowing a well-balanced increase in the vertical, horizontal, and oblique viewing angle characteristics for enhancing the viewing angle characteristics, and a rear projector including the transmissive screen. A transmissive screen includes a Fresnel lens portion having Fresnel lens components on its light-exiting surface; and a microlens array portion disposed at the light-exiting surface side of the Fresnel lens portion and having many microlenses on its light-incident surface. The microlenses of the microlens array portion are arrayed vertically and horizontally such that adjacent microlenses have common sides and the microlens array portion is rotated by 45°.
申请公布号 US2004075900(A1) 申请公布日期 2004.04.22
申请号 US20030647302 申请日期 2003.08.26
申请人 SEIKO EPSON CORPORATION 发明人 SAKAGUCHI MASAFUMI;YAMASHITA HIDETO
分类号 G02B3/00;G02B3/06;G02B5/02;G03B21/10;G03B21/62;(IPC1-7):G03B21/60;G03B21/56 主分类号 G02B3/00
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