ZOOM LENS AND IMAGING APPARATUS INCLUDING THE SAME

Japanese Patent JP2016045309

A

PROBLEM TO BE SOLVED: To provide a zoom lens that corresponds to a large-sized sensor and has a satisfactorily corrected chromatic aberration of magnification over an entire zoom range even with a high zooming ratio.SOLUTION: A zoom lens includes, in order from an object side: a positive first lens group stationary during zooming; a negative second lens group moving during zooming; a lens group having one or more groups moving during zooming; a stationary final lens group Ur closest to an image side during zooming; and an aperture diaphragm disposed closer to the image side than the second lens group. The zoom lens appropriately sets: an Abbe number for each of a positive lens and a negative lens constituting the second lens group; an average value of partial dispersion ratios; abnormal dispersibility of a lens Lrn 1 having a smallest Abbe number from among negative lenses constituting the final lens group Ur; a distance on the optical axis from a surface apex position of a lens surface closest to the object side in the zoom lens to a surface apex position of a lens surface closest to the image side in the zoom lens; and a distance from the aperture diaphragm at a wide angle end to the negative lens.SELECTED DRAWING: Figure 1

JP3088141	[Title of Invention] Zoom Lens
JP2007171456	BENT ZOOM LENS
JP5096253	Zoom lenses and imaging devices, as well as mobile phones

TAKEMOTO SHOICHI

JP2014168478A

April 04, 2016

August 21, 2014

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CANON KK

G02B15/167; G02B15/20

JP2007121650A

2007-05-17

WO2013065299A1

2013-05-10

Okabe
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Masami Saito
Katsuhiko Kimura
Naofumi Tanaka

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