发明名称 |
Projection lens systems for projector |
摘要 |
A projection lens system includes a cathode ray tube which projects the image to be projected on the screen through a set of six projection lens, which include non-spherical surfaces. The projection lens system is obliquely positioned in order to incline the optical axis of the projection lens at a predetermined angle with regard to the optical axis which exits from the projection lens and reaches the screen.
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申请公布号 |
US5475534(A) |
申请公布日期 |
1995.12.12 |
申请号 |
US19940250424 |
申请日期 |
1994.05.27 |
申请人 |
SONY CORPORATION |
发明人 |
OKAJIMA, KOJI;NAKAMURA, AKIRA |
分类号 |
G02B9/62;(IPC1-7):G02B3/00 |
主分类号 |
G02B9/62 |
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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