发明名称 LIGHTING DEVICE FOR ORIGINAL FOR USE IN CAMERA FOR PAINTINGS AND CALLIGRAPHY
摘要 PROBLEM TO BE SOLVED: To provide a compact camera for paintings and calligraphy built in a liquid crystal projector that can prevent a lighting light from being imprinted. SOLUTION: Each of lighting sections 1, 1 is formed through the arrangement of 3-rows and 10-columns of white light emitting diodes each having a lens whose lighting angle is about 40 degrees. A light diffusion plate 2 is shaped to be an inverse quadrangular pyramid whose apex is a focus of an image pickup lens 4a to surround a field angle of the image pickup lens 4a without a bottom face where a rectangular glass original platen 3 is equivalent to the bottom face, the four side faces are shaped to connect four triangles each having a notch to avoid the image pickup lens 4a and the inner face with knurl is painted in white. Furthermore, a rectangular lighting light transmission notch window 2a is made nearly in the middle of narrow width faces of the light diffusion plate 2 opposed to each other.
申请公布号 JP2002199253(A) 申请公布日期 2002.07.12
申请号 JP20000396833 申请日期 2000.12.27
申请人 NIPPON AVIONICS CO LTD 发明人 KAMIJO MAKOTO
分类号 G03B15/00;F21S8/04;F21Y101/02;G03B15/02;G03B21/132;G03B21/14;G03B21/20;H04N1/04;H04N5/222 主分类号 G03B15/00
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