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Patent Searching and Data


Title:
撮像用の光学系および撮像装置
Document Type and Number:
Japanese Patent JP6526336
Kind Code:
B2
Abstract:
An optical system (10) consists of, in order from an object side (11) toward an image plane (5a), a first lens group (G1) with overall positive refractive power, a second lens group (G2) with overall negative refractive power, an aperture stop (St), and a third lens group (G3) with overall positive refractive power. The third lens group (G3) includes a stop-side lens (L7) with positive refractive power that is disposed closest to the object side (11) and an image plane-side lens (L10) with negative refractive power that is disposed closest to the image plane side (12), and a distance dS between a surface on the object side of the lens (L7) and the aperture stop (St) and a distance dI between the surface on the object side of the lens (L7) and the image plane (5a) satisfy the condition (1) below. 0.02 < dS / dI < 0.3

Inventors:
澤本 章
Application Number:
JP2018524121A
Publication Date:
June 05, 2019
Filing Date:
June 20, 2017
Export Citation:
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Assignee:
株式会社nittoh
International Classes:
G02B13/00
Domestic Patent References:
JP2015215557A
JP2015068910A
JP2014211498A
Foreign References:
WO2014118865A1
Attorney, Agent or Firm:
今井 彰