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
    • 17. 发明申请
    • ZOOM LENS
    • 变焦镜头
    • US20160170187A1
    • 2016-06-16
    • US14864900
    • 2015-09-25
    • Coretronic Corporation
    • Tao-Hung KuoTzu-Yuan LinChing-Chuan WeiChuan-Te Cheng
    • G02B15/16G02B27/00G02B15/177
    • G02B15/161G02B15/177G02B27/0025
    • A zoom lens including a first lens group and a second lens group is provided. The first lens group having a negative refractive power is disposed between an object side and an image side and includes a first lens having a negative refractive power. The second lens group having a positive refractive power is disposed between the first lens group and the image side and includes a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from the object side to the image side. Refractive powers of the second lens, the third lens, the fourth lens and the fifth lens are positive, positive, negative and positive in sequence, wherein the first lens has a surface facing the object side, a radius of curvature of the surface is R1, and |R1|>700 mm.
    • 提供了包括第一透镜组和第二透镜组的变焦透镜。 具有负屈光力的第一透镜组设置在物体侧和像侧之间,并且包括具有负屈光力的第一透镜。 具有正折光力的第二透镜组设置在第一透镜组和像侧之间,并且包括从物体侧到像侧依次布置的第二透镜,第三透镜​​,第四透镜和第五透镜。 第二透镜,第三透镜​​,第四透镜和第五透镜的折射率依次为正,正,负和正,其中第一透镜具有面向物体侧的表面,表面的曲率半径为R1 ,| R1 |> 700mm。