Invention Application
US20160202457A1 Wide-Angle Zoom Lens and Image Pickup Apparatus 审中-公开
广角变焦镜头和图像拾取装置

  • Patent Title: Wide-Angle Zoom Lens and Image Pickup Apparatus
  • Patent Title (中): 广角变焦镜头和图像拾取装置
  • Application No.: US14990207
    Application Date: 2016-01-07
  • Publication No.: US20160202457A1
    Publication Date: 2016-07-14
  • Inventor: Dayong Li
  • Applicant: Tamron Co., Ltd.
  • Priority: JP2015-002368 20150108
  • Main IPC: G02B15/177
  • IPC: G02B15/177 G02B15/20 G02B27/64
Wide-Angle Zoom Lens and Image Pickup Apparatus
Abstract:
A wide-angle zoom lens includes: a first lens group having a negative refractive power, a second lens group having positive refractive power, a third lens group having a negative refractive power and a fourth lens group having a positive refractive power in that order from an object side. The second lens group is configured with a front group, a stop and a rear group having a positive refractive power in that order from the object side. Magnification change is performed by changing distances among the lens groups.
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