发明名称 REAR PROJECTION TYPE PROJECTOR DEVICE
摘要 PROBLEM TO BE SOLVED: To reduce deterioration of resolution, occurrence of image distortion, and deterioration of image quality in a rear projection type projector device. SOLUTION: In the rear projection type projector device, a transparent plate-like member (front plate) 4 is supported so as to be inclined with respect to a vertical surface A and a lenticular screen 3 and a Fresnel lens 5 are arranged on the upper side of the front plate 4. Thereby the lenticular screen 3 and the Fresnel lens 5 are stuck to the front plate 4 by gravity and gaps are hardly caused among them. Consequently the deterioration of resolution, the occurrence of image distortion, and the deterioration of image quality which are caused due to the production of gaps can be reduced. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2004326088(A) 申请公布日期 2004.11.18
申请号 JP20040083440 申请日期 2004.03.22
申请人 CANON INC 发明人 TAKANO HIROKUNI
分类号 G03B21/10;G03B21/62;H04N5/74;(IPC1-7):G03B21/10 主分类号 G03B21/10
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