发明名称 PROJECTING DEVICE AND IMAGE-FORMING DEVICE WITH IT
摘要 PROBLEM TO BE SOLVED: To obtain a projecting device which is always less uneven in quantity of light independent of a kind or magnification of a projection lens, and to obtain an image-forming device with it. SOLUTION: This projecting device projects on a picture plane an image 6 to be projected, which is illuminated by an illuminating means LX, through the projection lens 7. In this case, the illuminating means has a field lens element 5 adjacent to the projected image, and the field lens element is changeable in refractive power.
申请公布号 JP2002072133(A) 申请公布日期 2002.03.12
申请号 JP20000265116 申请日期 2000.09.01
申请人 CANON ELECTRONICS INC 发明人 FUJIBAYASHI KAZUO
分类号 G02B19/00;G02B15/15;G02B27/18;G09F9/00;H04N1/19;(IPC1-7):G02B27/18 主分类号 G02B19/00
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