Sony Corporation

Panasonic Corporation

Canon Tokki Corporation

Kido; Junji

Syuuji Maki

Junji Kido

Taisuke Nishimori

Yukihiro Kondo

Hideki Kai

Yasuo Kishi

Yuuji Yanagi

Teruo Nakagawa

Eiichi Matsumoto

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.

Zoom lens and image pickup unit

Growing community of inventors

Tokyo, Japan

Syuuji Maki