发明名称 |
Objective lens system |
摘要 |
An objective lens system consisting of a first lens unit having a negative refractive power and a second lens unit having a positive refractive power wherein the first lens unit or the second lens unit comprises at least one radial type gradient index lens element which has a refractive index distribution in a radial direction from an optical axis. This objective lens system favorably corrects chromatic aberration and other aberrations by adequately selecting a value expressing an Abbe's number and a refractive power of medium for the radial type gradient index lens element.
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申请公布号 |
US2001040211(A1) |
申请公布日期 |
2001.11.15 |
申请号 |
US20010845205 |
申请日期 |
2001.05.01 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
NAGAOKA TOSHIYUKI |
分类号 |
G02B13/04;G02B3/00;G02B9/10;G02B13/00;(IPC1-7):H01L31/00 |
主分类号 |
G02B13/04 |
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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