发明名称 |
Lens system for facsimile |
摘要 |
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third lens component consisting of a negative lens element and a positive lens element, said lens system having high OTF and assuring very low distortion as well as high intensity for marginal rays.
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申请公布号 |
US4264139(A) |
申请公布日期 |
1981.04.28 |
申请号 |
US19790081904 |
申请日期 |
1979.10.04 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
MAEDA, HARUO |
分类号 |
G02B9/12;G02B9/20;G02B9/34;G02B13/24;(IPC1-7):G02B9/20 |
主分类号 |
G02B9/12 |
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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