Invention Grant
- Patent Title: Zoom lens and image pickup unit
- Patent Title (中): 变焦镜头和摄像单元
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Application No.: US13680809Application Date: 2012-11-19
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Publication No.: US08730588B2Publication Date: 2014-05-20
- Inventor: Hideki Kai , Syuuji Maki
- Applicant: Sony Corporation
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2011-278265 20111220
- Main IPC: G02B15/14
- IPC: G02B15/14 ; H04N5/262

Abstract:
A zoom lens includes: a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, and a fourth lens group having positive refractive power, the first to fourth lens groups being arranged in order from an object side, in which zooming is performed through varying a distance between adjacent lens groups of the first to fourth lens groups, and the fourth lens group includes a first positive lens, a first negative meniscus lens, and a cemented lens which are arranged in order from the object side, the cemented lens being configured of a second negative meniscus lens with a convex surface facing the object side and a second positive lens.
Public/Granted literature
- US20130155294A1 ZOOM LENS AND IMAGE PICKUP UNIT Public/Granted day:2013-06-20
Information query