Invention Grant
- Patent Title: Zoom optical system, optical apparatus and method for manufacturing the zoom optical system
-
Application No.: US15778258Application Date: 2016-11-28
-
Publication No.: US10761304B2Publication Date: 2020-09-01
- Inventor: Kosuke Machida
- 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@4d54a1b5
- International Application: PCT/JP2016/085194 WO 20161128
- International Announcement: WO2017/094664 WO 20170608
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B15/173 ; G02B13/02
Abstract:
A zoom optical system (ZL) comprises, in order from an object: a first lens group (G1) having positive refractive power; an intermediate group (GM) including at least one lens group and having negative refractive power as a whole; an intermediate side lens group (GRP1) having positive refractive power; a subsequent side lens group (GRP2) having positive refractive power; and a subsequent group (GR) including at least one lens group. The intermediate group (GM) includes a partial group satisfying following conditional expressions: 1.4
Public/Granted literature
- US20180341091A1 ZOOM OPTICAL SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE ZOOM OPTICAL SYSTEM Public/Granted day:2018-11-29
Information query
