| 发明名称 |
ZOOM LENS OPTICAL SYSTEM |
| 摘要 |
<p>The present invention provides an optical system comprising a negative supplementary element and a lens adjustable for focussing onto an object lying within a macro range, in which the supplementary element is mounted in front of the lens as seen in the direction of incident light and has a focal length in the macro range of the lens.</p> |
| 申请公布号 |
CA1079557(A) |
申请公布日期 |
1980.06.17 |
| 申请号 |
CA19760258596 |
申请日期 |
1976.08.06 |
| 申请人 |
BOLEX INTERNATIONAL SA |
发明人 |
LAURENT, FRANCOIS;BOEHM, KURT;ROLLENITZ, LEOPOLD |
| 分类号 |
G02B7/105;G02B13/18;G02B15/06;G02B15/14;G02B15/22;(IPC1-7):02B15/16 |
主分类号 |
G02B7/105 |
| 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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