发明名称 |
Lens system for a head separated type charge coupled device camera |
摘要 |
Disclosed is a telephoto-type lens system of a head separated charge coupled device (CCD) camera, which includes a first lens group having a positive focal length, a second lens group having a negative focal length, and a third lens group. The first lens group has a first convex lens surface facing an object and an upper convex surface. The third lens group has a second lens with a negative focal length joined to a first lens with a positive focal length. An image angle greater than 29 DEG and high definition images can be achieved with the present invention.
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申请公布号 |
US5715098(A) |
申请公布日期 |
1998.02.03 |
申请号 |
US19960582618 |
申请日期 |
1996.01.04 |
申请人 |
SAMSUNG AEROSPACE INDUSTRIES, LTD. |
发明人 |
KIM, SUNG-TAE |
分类号 |
G02B9/62;G02B13/00;G02B13/02;(IPC1-7):G02B13/02;G02B9/14 |
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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