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公开(公告)号:US08947791B2
公开(公告)日:2015-02-03
申请号:US13495822
申请日:2012-06-13
申请人: Shoji Kogo , Yasushi Yamamoto , Kana Inoue
发明人: Shoji Kogo , Yasushi Yamamoto , Kana Inoue
IPC分类号: G02B9/60 , G02B15/14 , G02B15/173 , G02B27/64
CPC分类号: G02B15/173 , G02B9/60 , G02B27/646
摘要: A large aperture zoom optical system and an image pickup apparatus have a five-lens-group arrangement of positive-negative-positive-negative-positive refractive powers. At the time of zooming, the fifth lens group is fixed, and at least the second lens group, the third lens group and the fourth lens group are moved. The third lens group for use in focusing is composed of a single lens element.
摘要翻译: 大光圈变焦光学系统和图像拾取装置具有正 - 负 - 正 - 正 - 正屈光力的五透镜组排列。 在变焦时,第五透镜组被固定,并且至少第二透镜组,第三透镜组和第四透镜组移动。 用于聚焦的第三透镜组由单个透镜元件组成。
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公开(公告)号:US20120314291A1
公开(公告)日:2012-12-13
申请号:US13495822
申请日:2012-06-13
申请人: Shoji Kogo , Yasushi Yamamoto , Kana Inoue
发明人: Shoji Kogo , Yasushi Yamamoto , Kana Inoue
CPC分类号: G02B15/173 , G02B9/60 , G02B27/646
摘要: A large aperture zoom optical system and an image pickup apparatus have a five-lens-group arrangement of positive-negative-positive-negative-positive refractive powers. At the time of zooming, the fifth lens group is fixed, and at least the second lens group, the third lens group and the fourth lens group are moved. The third lens group for use in focusing is composed of a single lens element.
摘要翻译: 大光圈变焦光学系统和图像拾取装置具有正 - 负 - 正 - 正 - 正屈光力的五透镜组排列。 在变焦时,第五透镜组被固定,并且至少第二透镜组,第三透镜组和第四透镜组移动。 用于聚焦的第三透镜组由单个透镜元件组成。
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