Imaging lens and imaging device - FUJIFILM Corporation

Title:

Imaging lens and imaging device

Document Type and Number:

Japanese Patent JP6363574

Kind Code:

B2

Abstract:

An imaging lens includes, in order from the object side, a first lens group fixed during focusing, a positive second lens group moved toward the object side during focusing from a distant to a close object, and a third lens group fixed during focusing and including one positive lens. The second group includes, in order from the object side, a first cemented lens including a biconvex lens and a negative lens having a smaller absolute value of curvature radius of the object-side surface than of the image-side surface, and a second cemented lens having a positive refractive power and including a negative lens having a smaller absolute value of curvature radius of the image-side surface than of the object-side surface and a positive lens having a smaller absolute value of curvature radius of the object-side surface than of the image-side surface. The imaging lens satisfies specific condition expressions.

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Inventors:

Naruse Yosuke
Rinsei Cho

Application Number:

JP2015189267A

Publication Date:

July 25, 2018

Filing Date:

September 28, 2015

Export Citation:

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Assignee:

FUJIFILM Corporation

International Classes:

G02B13/00

Domestic Patent References:

JP2010217505A
JP201039088A
JP4204613A

Foreign References:

US20110085246

Attorney, Agent or Firm:

Patent Service Corporation Taiyo International Patent Office

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