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Patent Searching and Data


Title:
VARIABLE-FOCAL-DISTANCE LENS SYSTEM AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/078222
Kind Code:
A1
Abstract:
This variable-focal-distance lens system is constituted from, in order from an object side to an image surface side, a first lens unit comprising a first lens element in which at least one lens surface thereof is configured as a free-form surface, a second lens unit comprising a second lens element in which at least one lens surface thereof is configured as a free-form surface, and third lens unit having an aperture diaphragm and being constituted from a lens having a rotationally symmetrical shape, the first lens unit and the second lens unit being movable in a Y-axis direction and moving in mutually opposite directions from each other, whereby the synthetic refractive power of the first lens unit and the second lens unit is variable, a Z-axis being the optical axis of the third lens unit, the Y-axis being the axis orthogonal to the Z-axis on the image surface, and an X-axis being the axis orthogonal to the Y-axis and the Z-axis on the image surface.

Inventors:
OTAKE, Motoyuki (1-7-1 Konan, Minato-k, Tokyo 75, 〒1080075, JP)
MATSUI, Takumi (1-7-1 Konan, Minato-k, Tokyo 75, 〒1080075, JP)
KAMM, Markus (Hedelfinger Strasse 61, Stuttgart, D-70327, DE)
WEICHELT, Christin (Hedelfinger Strasse 61, Stuttgart, D-70327, DE)
ISHIOKA, Manabu (1-7-1 Konan, Minato-k, Tokyo 75, 〒1080075, JP)
Application Number:
JP2018/038553
Publication Date:
April 25, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1, Konan Minato-k, Tokyo 75, 〒1080075, JP)
International Classes:
G02B15/14; G02B13/18
Foreign References:
JPS59116710A1984-07-05
JP2009505166A2009-02-05
JP2006047420A2006-02-16
JP2006065307A2006-03-09
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (3F Sawada Building, 15-9 Shinjuku 1-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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