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Patent Searching and Data


Title:
LENS SYSTEM, IMAGING DEVICE, AND IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/187221
Kind Code:
A1
Abstract:
A lens system (IL) for forming an image on an imaging element (12), is provided with: a first lens element (L1), a second lens element (L2), and a third lens element (L3) which are arranged in order from the object side to the image surface side along the optical axis (D1); and an aperture (A). In the lens system, the first lens element and/or the second lens element has a free curved surface which is asymmetric with respect to the optical axis. The object-side surface shape of the first lens element is convex toward the object side. The image surface-side surface shape of the second lens element is convex toward the object side. The object-side surface shape of the third lens element is concave toward the image surface side. The lens system has at least one free curved surface on the image surface side from the aperture.

Inventors:
MATSUMURA, Yoshio
SHOBAYASHI, Hiroyuki
Application Number:
JP2018/034867
Publication Date:
October 03, 2019
Filing Date:
September 20, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
G02B13/04; G02B13/18
Foreign References:
JP2006337691A2006-12-14
JP2017134394A2017-08-03
JP2016126254A2016-07-11
Attorney, Agent or Firm:
YAMAO, Norihito et al. (AOYAMA & PARTNERS, Umeda Hankyu Bldg. Office Tower 8-1, Kakuda-cho, Kita-ku, Osaka-sh, Osaka 17, 〒5300017, JP)
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