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61. 发明授权

US5754347A Photographic lens system 失效
标题翻译：摄影镜头系统
公开(公告)号：US5754347A
公开(公告)日：1998-05-19
申请号：US746385
申请日：1996-11-08
申请人： Yuko Kobayashi
发明人： Yuko Kobayashi
IPC分类号： G02B13/18 , G02B9/14
CPC分类号： G02B9/14
摘要： A photographic lens system for compact cameras comprising in order from the object side: a first positive meniscus lens element having a convex surface on the object side; a second biconcave lens element; a third biconvex lens element; and a stop, wherein at least two lens element including the first lens element have refractive indices not exceeding 1.6. This photographic lens system is configured so as to be manufactured at a low cost and exhibit high optical performance by selecting an adequate focal length for the third lens element.
摘要翻译：一种用于小型照相机的照相镜头系统，包括从物体侧起的顺序：在物体侧具有凸面的第一正弯月形透镜元件; 第二双凹透镜元件; 第三双凸透镜元件; 和止挡件，其中包括所述第一透镜元件的至少两个透镜元件的折射率不超过1.6。该摄影透镜系统被配置为以低成本制造并且通过为第三透镜元件选择足够的焦距来表现出高的光学性能。

62. 发明授权

US4953957A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US4953957A
公开(公告)日：1990-09-04
申请号：US326633
申请日：1989-03-21
申请人： Yuko Kobayashi
发明人： Yuko Kobayashi
IPC分类号： G02B15/16
CPC分类号： G02B15/161
摘要： A zoom lens system comprising a very small number of lens components, having favorably corrected aberrations, comprising two lens groups having positive refractive power and negative refractive power respectively, and so adapted as to perform variation of focal length by varying the airspace reserved between the two lens groups, said lens group having positive refractive power comprising at least one graded refractive index lens component having the shape of a negative meniscus lens and a refractive power distribution wherein refractive indices are lowered as the lens portions are farther from the optical axis in the direction perpendicular to the optical axis.
摘要翻译：一种变焦透镜系统，包括非常少数量的透镜组件，具有有利的校正像差，包括分别具有正折射光焦度和负折射光焦度的两个透镜组，并且适于通过改变两个之间保留的空间来实现焦距的变化所述透镜组具有正折射光焦度，其包括具有负弯月透镜形状的至少一个渐变折射率透镜部件和折射率分布，其中折射率随着透镜部分在光轴方向上远离光轴而降低垂直于光轴。

63. 发明授权

US4497546A Wide-field eyepiece 失效
标题翻译：宽视场目镜
公开(公告)号：US4497546A
公开(公告)日：1985-02-05
申请号：US483278
申请日：1983-04-08
申请人： Yuko Kobayashi
发明人： Yuko Kobayashi
IPC分类号： G02B25/00 , G02B25/04 , G02B9/34
CPC分类号： G02B25/04
摘要： A wide-field eyepiece comprising a first, second and third lens components, the first lens component being a positive cemented doublet consisting of a negative lens and a positive lens, the second lens component being a negative cemented doublet consisting of a negative lens and a positive lens, the third lens component comprising at least two lens elements and having positive refractive power as a whole, the wide-field eyepiece having a long eyepoint distance and favorably corrected aberrations.
摘要翻译：一种包括第一，第二和第三透镜部件的宽视场目镜，所述第一透镜部件是由负透镜和正透镜组成的正粘合双面胶，所述第二透镜部件是由负透镜和正透镜，第三透镜部件包括至少两个透镜元件并且整体具有正折射力，所述宽视场目镜具有长的眼点距离和有利的校正像差。

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