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1. (WO2018123672) IMAGING OPTICAL SYSTEM, AND IMAGING DEVICE AND CAMERA SYSTEM PROVIDED WITH SAME

Pub. No.:    WO/2018/123672    International Application No.:    PCT/JP2017/045241
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Tue Dec 19 00:59:59 CET 2017
IPC: G02B 15/20
G02B 13/18
Applicants: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: KURIOKA Yoshiaki
栗岡 善昭
KITADA Takahiro
北田 高博
Title: IMAGING OPTICAL SYSTEM, AND IMAGING DEVICE AND CAMERA SYSTEM PROVIDED WITH SAME
Abstract:
Provided is an imaging optical system in which the gap between lens groups is changed when zooming and that is provided with, among lens groups having negative power, a lens group Gm on the side closest to the object. The lens group Gm is provided in order from the object side to the image side with a lens element LGmF1 having negative power, a lens element LGmF2 having negative power wherein both surfaces are aspherical surfaces, and a lens element having power equal to or greater than the two lenses. Thus, it is possible to provide an imaging optical system excellent for various forms of aberration such as spherical aberration, nonlinear aberration, and distortion, and an imaging device and camera system provided with the same.