发明名称 |
Variable-focus optical device |
摘要 |
An variable-focus optical device capable of changing the focal length with excellent responsiveness and reproducibility during repetitive deformation, comprises: an elastomeric member having prescribed viscoelastic characteristics, and an aperture member having an aperture adapted for causing projection or sinking of the elastomeric member therethrough or thereat.
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申请公布号 |
US4892396(A) |
申请公布日期 |
1990.01.09 |
申请号 |
US19870053676 |
申请日期 |
1987.05.26 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KUSHIBIKI, NOBUO;YOSHINAGA, YOKO |
分类号 |
G02B3/12;G02B3/14;G02B15/00;G02B26/08 |
主分类号 |
G02B3/12 |
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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