| 发明名称 |
OPTICAL ELEMENT, LIGHTING DEVICE, PROJECTION DISPLAY DEVICE |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element capable of emitting incident light in a uniform illuminance distribution with a simple configuration. <P>SOLUTION: The optical element 1 is provided with a light guide means 2 having a light incident surface 3 and a light exit surface 4, and constituted so that a space between the light incident surface 3 and the light exit surface 4 is surrounded by light reflection surfaces 6, besides, the optical element 1 is provided with a light diffusing means 5 arranged between the light incident surface 3 and the light exit surface 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
| 申请公布号 |
JP2004184611(A) |
申请公布日期 |
2004.07.02 |
| 申请号 |
JP20020349973 |
申请日期 |
2002.12.02 |
| 申请人 |
SEIKO EPSON CORP |
发明人 |
MATSUBARA TAKAYUKI;SAKATA HIDEFUMI;TAKEDA TAKASHI |
| 分类号 |
G02B5/02;F21S2/00;F21V5/00;F21Y101/02;G02B27/00;G02B27/18;G02F1/13;G02F1/13357;G03B21/00;G03B21/14 |
主分类号 |
G02B5/02 |
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