发明名称 |
Objective lens system for microscopes |
摘要 |
An objective lens system for microscopes consisting of a front lens group comprising a positive lens component and a meniscus lens component having a concave surface on the image side, and a rear lens group comprising at least a meniscus cemented lens component, a positive lens component and at least one cemented three-element lens component. Said objective lens system is so designed as to have a large numerical aperture, secondary spectrum sufficiently minimized, a long working distance and curvature of field, coma etc. favorably corrected over a wide range of visual field.
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申请公布号 |
US4227773(A) |
申请公布日期 |
1980.10.14 |
申请号 |
US19780936394 |
申请日期 |
1978.08.24 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
TOJO, TSUTOMU;UETAKE, TOSHIFUMI |
分类号 |
G02B21/02;(IPC1-7):G02B9/34;G02B9/60 |
主分类号 |
G02B21/02 |
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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