Title:
IMAGING OPTICAL SYSTEM AND IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2017207720
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an imaging optical system capable of improving an accuracy of forming an image of light spectroscopically split, on a light-receiving surface.SOLUTION: An imaging optical system 101 includes: an image formation optical system 10 configured to condense light L from a subject Q to form an image at an image formation position 15; an aperture diaphragm 20 arranged in the image formation position 15; a lens array 31 arranged closer to an image than the aperture diaphragm 20 and having a plurality of lenses 32; a spectroscopic part 33 having a plurality of spectral filters 34 respectively with wavelength transmission characteristics different from one another; and an image pick-up device 40 arranged at a position conjugate to the aperture diaphragm 20 interposing the lens array 31 and having a light-receiving surface 41 configured to receive light flux L' having penetrated the spectroscopic part 33. The spectral filter 34 disperses the light flux L' incident on or emitted from each of the lenses 32 into a predetermined wavelength λ according to the wavelength transmission characteristics. In the lenses 32, a focal length f of a lens 32 is determined so that the light flux L' of the wavelength λ forms an image at the light-receiving surface 41.SELECTED DRAWING: Figure 1
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Inventors:
ISHIHARA NAGISA
NAGAI SHO
SATO HIROYUKI
MIMA DAIKI
MARUYAMA TAKESHI
FUJISHIMA MASAYUKI
YAMASHITA HIROYUKI
HATASHITA CHIEKO
NAGAI SHO
SATO HIROYUKI
MIMA DAIKI
MARUYAMA TAKESHI
FUJISHIMA MASAYUKI
YAMASHITA HIROYUKI
HATASHITA CHIEKO
Application Number:
JP2016101825A
Publication Date:
November 24, 2017
Filing Date:
May 20, 2016
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
G03B11/00; G01J3/36; G01J3/51; G02B3/00; G02B13/00; G03B15/00
Domestic Patent References:
| JP2014075669A | 2014-04-24 | |||
| JP2008089691A | 2008-04-17 | |||
| JP2013198016A | 2013-09-30 | |||
| JP2006246193A | 2006-09-14 | |||
| JPH11150254A | 1999-06-02 | |||
| JP2012205111A | 2012-10-22 | |||
| JP2012134742A | 2012-07-12 | |||
| JP2014182299A | 2014-09-29 | |||
| JP2014154662A | 2014-08-25 |
Attorney, Agent or Firm:
Shuichi Kudo
Toru Kabayama
Shogo Honda
Toru Kabayama
Shogo Honda
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