发明名称 Rear-projection screen for ultra short throw projector
摘要 A rear-projection screen for an ultra short throw projector includes a diffusing member to diffuse incident light having a specific angular range (AR) corresponding to a hotspot area generated on the rear-projection screen, and to transmit incident light having an angular range other than the specific angular range (AR). The diffusing member is provided at an area of the rear-projection screen where light having smaller incidence angle with respect to the rear-projection screen strikes the rear-projection screen.
申请公布号 US8649090(B2) 申请公布日期 2014.02.11
申请号 US201313763957 申请日期 2013.02.11
申请人 HOSOI NOBUHIRO;RICOH COMPANY, LTD. 发明人 HOSOI NOBUHIRO
分类号 G03B21/60;G03B21/56 主分类号 G03B21/60
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