发明名称 |
Projector using a light-selective prism |
摘要 |
A red-reflecting film and a blue-reflecting film are formed in a substantially X shape on joint surfaces defined by the respective side faces of four columnar prisms or right-angle prisms. The red-reflecting film is continuously formed without separating at an intersection of the two reflecting films. The blue-reflecting film is, on the other hand, divided into two pieces by the red-reflecting film and an adhesive. It is preferable that that four columnar prisms are obtained from one block of sheet glass. This arrangement ensures an improvement in properties of a resulting light-selective prism.
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申请公布号 |
US6342971(B1) |
申请公布日期 |
2002.01.29 |
申请号 |
US20000624995 |
申请日期 |
2000.07.25 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
HASHIZUME TOSHIAKI;MURATA MASAMI |
分类号 |
G02B5/04;G02B27/10;G02B27/14;G02B27/18;G03B21/14;G03B33/12;(IPC1-7):G02B27/10;G03B21/00 |
主分类号 |
G02B5/04 |
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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