发明名称 |
PROJECTION DISPLAY DEVICE |
摘要 |
<p>A projection type display apparatus having a long-life light source device with high light utilization efficiency includes first and second light source lamps 11 and 12; a light intensity equalizing element 15; first and second bending mirrors 13 and 14; an image display element 61 modulating a light flux L3 emitted from the light intensity equalizing element 15 and converting it into image light L4; and a projection optical system 62 projecting the image light on a screen 63; and the first light source lamp 11, the second light source lamp 12, the first bending mirror 13 and the second bending mirror 14 are arranged so that a first optical axis 11c of the first light source lamp 11 disagrees with a second optical axis 12c of the second light source lamp 12 and a first distance between the first bending mirror 13 and an incidence end 15a differs from a second distance between the second bending mirror 14 and the incidence end 15a.</p> |
申请公布号 |
EP2357526(A1) |
申请公布日期 |
2011.08.17 |
申请号 |
EP20090831613 |
申请日期 |
2009.10.21 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
KOJIMA, KUNIKO;KIDA, HIROSHI |
分类号 |
G03B21/14;H04N5/74 |
主分类号 |
G03B21/14 |
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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