发明名称 |
Projection type display apparatus having a light source device with improved light utilization efficiency |
摘要 |
A projection type display apparatus having a long-life light source device with high light utilization efficiency includes first and second light source lamps; a light intensity equalizing element; first and second bending mirrors; an image display element modulating a light flux emitted from the light intensity equalizing element and converting it into image light; and a projection optical system projecting the image light on a screen; and the first light source lamp, the second light source lamp, the first bending mirror and the second bending mirror are arranged so that a first optical axis of the first light source lamp disagrees with a second optical axis of the second light source lamp and a first distance between the first bending mirror and an incidence end differs from a second distance between the second bending mirror and the incidence end. |
申请公布号 |
US8434876(B2) |
申请公布日期 |
2013.05.07 |
申请号 |
US20090746828 |
申请日期 |
2009.10.21 |
申请人 |
KOJIMA KUNIKO;KIDA HIROSHI;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
KOJIMA KUNIKO;KIDA HIROSHI |
分类号 |
G03B21/26 |
主分类号 |
G03B21/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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