| 发明名称 |
IMAGE PROJECTION DEVICE AND COLOR SEPARATING AND COMPOSING OPTICAL SYSTEM |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a bright projected image on an image projection device. <P>SOLUTION: In the image projection device, unnecessary light is guided to a specific optical path and is analyzed by a polarizing plate. <P>COPYRIGHT: (C)2012,JPO&INPIT |
| 申请公布号 |
JP2012022294(A) |
申请公布日期 |
2012.02.02 |
| 申请号 |
JP20110081975 |
申请日期 |
2011.04.01 |
| 申请人 |
CANON INC |
发明人 |
YAMAUCHI HISASHI;MAEDA YUUKI |
| 分类号 |
G03B21/14;G02B5/30;G02B27/18;G02F1/13 |
主分类号 |
G03B21/14 |
| 代理机构 |
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