发明名称 |
Objective lens having a filter |
摘要 |
This specification discloses an objective lens disposed forwardly of a prism block for dividing light into a plurality of color components, the objective lens having an optical filter differing in spectral transmission factor between the central area thereof and the marginal areas thereof, this filter being given the characteristic that one of the marginal areas transmits much of magenta light therethrough and the other marginal area transmits much of green light therethrough, thereby suppressing the coloring of a blurred image based on the light incidence angle dependency of the color dividing surface of the prism block.
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申请公布号 |
US5251068(A) |
申请公布日期 |
1993.10.05 |
申请号 |
US19930002677 |
申请日期 |
1993.01.08 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
OSHIMA, SHIGERU;FURUE, YUSUKE |
分类号 |
G02B5/20;H04N9/097;(IPC1-7):G02B5/22;G02B27/14 |
主分类号 |
G02B5/20 |
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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