会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Zoom lens system, interchangeable lens apparatus and camera system
    • 变焦镜头系统,可互换镜头设备和相机系统
    • US08243170B2
    • 2012-08-14
    • US12416385
    • 2009-04-01
    • Kyoichi MiyazakiKatsu YamadaTakuya ImaokaMasaki Sampei
    • Kyoichi MiyazakiKatsu YamadaTakuya ImaokaMasaki Sampei
    • H04N5/262H04N5/232G03B13/00G03B17/00G02B15/14
    • G02B15/173
    • A zoom lens system is provided that includes a compactly constructed focusing lens unit and that has a suppressed change in the image magnification at the time of movement of a focusing lens unit. The zoom lens system according to the present invention, in order from an object side to an image side, comprises: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; and an aperture diaphragm. At the time of zooming, the zoom lens system moves the first to third lens units so that intervals between these lens units vary. At the time of focusing from an infinity in-focus condition to a close-point object in-focus condition, the zoom lens system moves the third lens unit to the object side.
    • 提供一种变焦透镜系统,其包括紧凑构造的聚焦透镜单元,并且在聚焦透镜单元移动时具有抑制的图像放大率的变化。 根据本发明的变焦透镜系统,从物体侧到像侧依次包括:具有正光焦度的第一透镜单元; 具有负光焦度的第二透镜单元; 具有正光焦度的第三透镜单元; 和孔径光阑。 在变焦时,变焦透镜系统移动第一至第三透镜单元,使得这些透镜单元之间的间隔变化。 在从无限远对焦状态聚焦到近距离物体对焦状态时,变焦透镜系统将第三透镜单元移动到物体侧。