• Patent Title: Zoom lens, optical apparatus, and method for manufacturing the zoom lens
  • Application No.: US15916186
    Application Date: 2018-03-08
  • Publication No.: US10670847B2
    Publication Date: 2020-06-02
  • Inventor: Makoto FujimotoTakeshi Umeda
  • Applicant: NIKON CORPORATION
  • Applicant Address: JP Tokyo
  • Assignee: Nikon Corporation
  • Current Assignee: Nikon Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: SGPatents PLLC
  • Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@227fd377 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@648607b7 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@115e88cf com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@2f308d5f com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@738817a5
  • Main IPC: G02B27/64
  • IPC: G02B27/64 G02B15/177 G02B15/163 G02B27/00
Zoom lens, optical apparatus, and method for manufacturing the zoom lens
Abstract:
A zoom lens includes a first lens group having negative refractive power; a second lens group having positive refractive power; a third lens group having negative refractive power and a fourth lens group having positive refractive power. Upon varying magnification, distances between the first lens group and the second lens group, between the second lens group and the third lens group and between the third lens group and the fourth lens group vary. The second lens group includes a front lens group, an aperture stop, and a rear lens group. Each of the front lens group and the rear lens group includes at least one positive lens. At least a part of the lenses in the second lens group is moved as a group to have a component in a direction perpendicular to an optical axis.
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