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Patent Searching and Data


Title:
IMAGING LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/187633
Kind Code:
A1
Abstract:
According to the present invention, high performance including good focusing-related performance is achieved. The imaging lens is provided with, in order from the object side to the image side, a first lens group which is constantly fixed and which has a positive refractive power, and a first focus lens group which moves in the optical axis direction during focusing from an infinity object to a short-distance object, and is provided with, in order from the image side to the object side, a final lens group which is constantly fixed and which has a negative refractive power, and a second focus lens group which moves in the optical axis direction during focusing from an infinity object to a short-distance object, wherein: the first focus lens group and/or the second focus lens group has a negative refractive power; an aperture diaphragm is disposed between the first focus lens group and the second focus lens group; and conditional expression (1) is satisfied. (1): 0.4

Inventors:
MATSUOKA, Ora (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
MIYAGAWA, Naoki (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
MATSUMOTO, Hiroyuki (1-7-1 Konan Minato-k, Tokyo 75, 〒1080075, JP)
Application Number:
JP2019/003857
Publication Date:
October 03, 2019
Filing Date:
February 04, 2019
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1 Konan, Minato-ku Tokyo, 75, 〒1080075, JP)
International Classes:
G02B13/00; G02B13/18
Foreign References:
JPH04110811A1992-04-13
JP2012220828A2012-11-12
JP2009229516A2009-10-08
US20170176721A12017-06-22
Attorney, Agent or Firm:
IWATA, Masanobu et al. (Technopeer Patents & Trademarks, Hakusei Bldg. 8th Floor 1-3-9, Iwamoto-cho, Chiyoda-k, Tokyo 32, 〒1010032, JP)
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