ZOOM LENS SYSTEM AND CAMERA SYSTEM

WIPO Patent Application WO/2016/047084

A1

Provided is a lens system comprising a plurality of lens groups each of which is configured with at least one lens element, wherein the lens system is formed in order from the object side to the image side from a first lens group having a positive power, a second lens group having a negative power, a third lens group having a positive power, and succeeding lens groups including three lens groups. The image-side-most lens group, which is the lens group among the succeeding lens groups which is located nearest the image side, has a positive power. The first lens group is configured in order from the object side to the image side from a first lens element having a negative power, a lens second element having a positive power, a third lens element having a positive power, and a fourth lens element having a positive power. When zooming from wide-angle to telephoto in image capture, a gap between each adjacent lens group changes, the first lens group is fixed with respect to an image plane, and the fourth lens group, which is nearest among the succeeding lens groups to the object side, moves along an optical axis.

JP2007108701	IMAGING OPTICAL SYSTEM AND ELECTRONIC IMAGING DEVICE HAVING IT
JP4724902	Variable focal length lens system
JP5751991	Zoom lens and imaging device with it

HISATOMI YOSHIYUKI
ZHAO QINGHUA
IMAOKA TAKUYA

PCT/JP2015/004657

March 31, 2016

September 14, 2015

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PANASONIC IP MAN CO LTD (JP)

G02B15/20; G02B13/18

JP2014142451A	2014-08-07
US20140176778A1	2014-06-26

FUJII, Kentaro et al. (JP)
Fujii Kentaro (JP)

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