Title:
WIDE-ANGLE LENS AND IMAGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/141349
Kind Code:
A1
Abstract:
[Problem] To provide a compact wide-angle lens in which chromatic aberration of magnification is satisfactorily corrected. [Solution] The present invention comprises, in order from the subject side, a front group (G1) having negative refractive power, an aperture diaphragm (St), and a rear group (G2) having positive refractive power. The front group (G1) includes, in order from the subject side, a first meniscus lens (L11) having negative refractive power, and a second meniscus lens (L12) having negative refractive power. The rear group includes, at the furthest image-side, a first cemented lens comprising, in order from the subject side, a negative lens (L24) and a positive lens (L25), and includes a lens (L23) that has at least one aspherical surface, negative refractive power, and adjoins to the subject-side of the first cemented lens.
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Inventors:
NODA TAIGA (JP)
Application Number:
PCT/JP2013/007647
Publication Date:
September 18, 2014
Filing Date:
December 26, 2013
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B13/04; G02B13/18
Foreign References:
| JP2012173730A | 2012-09-10 | |||
| JP2010176098A | 2010-08-12 | |||
| JP2011102871A | 2011-05-26 | |||
| JP2011209377A | 2011-10-20 |
Attorney, Agent or Firm:
YANAGIDA, Masashi et al. (JP)
Seiji Yanagida (JP)
Seiji Yanagida (JP)
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