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Patent Searching and Data


Title:
LENS SYSTEM, CAMERA SYSTEM, AND IMAGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/230034
Kind Code:
A1
Abstract:
This lens system for forming an image on a rectangular imaging element disposed on the optical axis is provided with a first free-form surface lens which is asymmetrical with respect to the optical axis. The free-form surface of the first free-form surface lens has: negative refractive power with respect to a light beam parallel to the optical axis, at an intersection point between a first surface which passes through the optical axis, and which is parallel to the long sides of the imaging element, and a circle separated from the optical axis by a length having a prescribed ratio with respect to the minimum image height; and positive refractive power with respect to a light beam parallel to the optical axis, at an intersection point between a second surface which passes through the optical axis, and which is parallel to the short sides of the imaging element, and a circle separated from the optical axis by a length having a prescribed ratio with respect to the minimum image height.

Inventors:
MATSUMURA Yoshio
Application Number:
JP2018/004775
Publication Date:
December 20, 2018
Filing Date:
February 13, 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
Domestic Patent References:
WO2003101599A12003-12-11
Foreign References:
JP2016148725A2016-08-18
JP2010276755A2010-12-09
JP2006011093A2006-01-12
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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