光路折り曲げ部材を有するズームレンズ及びそれを備える撮像装置

Japanese Patent JP5778410

B2

PROBLEM TO BE SOLVED: To provide a zoom lens compatibly attaining the retention of high optical performance and cost reduction in the zoom lens of a negative preceding type having an optical path folding member in the optical path; and to provide an image pickup apparatus.SOLUTION: This zoom lens includes, in order from an object side to an image side, at least a first lens group of a negative refractive power, a second lens group of a positive refractive power, and a third lens group having a lens. An interval between the first lens group and the second lens group is narrower in a telephoto end than that in a wide-angle end, and an interval between the second lens group and the third lens group changes when varying power from the wide-angle end to the telephoto end. The first lens group comprises, in order from the object side, a front-side sub lens group of a negative refractive power, the optical path folding member, and a rear-side sub lens group of the positive refractive power. The front sub lens group comprises a simple biconcave lens, the rear-side sub lens group comprises one or two simple lenses, the total number of the positive lenses of the rear-side sub lens group is one, and this zoom lens satisfies prescribed conditional expressions.

JPS63148223	ZOOM LENS
JP4551676	Zoom lens, image display device, imaging device
JP6991814	Zoom lens and image pickup device

Shinobu Katayose
Kenji Ono
Kazuhito Hayakawa

JP2010256490A

September 16, 2015

November 17, 2010

Click for automatic bibliography generation  

Olympus Endo Technology America Inc.

G02B15/20; G02B13/18; H04N5/225

JP2011059496A
JP2003302575A
JP2004309684A
JP2007248796A
JP2008276260A
JP2004340995A
JP2010160278A
JP2006284790A

Keisuke Saito
Iwao Hirayama

Previous Patent: コンバイン

Next Patent: MANUFACTURE OF ENHANCED REACTION INJECTION MOLDED POLYURETHANE ELASTOMER