Title:
SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/056479
Kind Code:
A1
Abstract:
A system includes: an illumination device; and an imaging device configured to capture an image of a target which is irradiated with light by the illumination device. The illumination device includes: a light emitting unit configured to emit first polarized light; a condensing unit configured to focus light emitted from the light emitting unit; a diffusion unit configured to diffuse the light focused by the condensing unit; and a uniformization optical system configured to receive the light diffused by the diffusion unit, uniformize an illuminance distribution of the light, and emit the light. The system further comprising a selective transmission unit provided on an optical path from the target to an imaging element of the imaging device and configured to block the first polarized light at a predetermined blocking ratio.
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Inventors:
TAKAHASHI TATSUYA (JP)
FUJITA KAZUHIRO (JP)
MARUYAMA GO (JP)
FUJITA KAZUHIRO (JP)
MARUYAMA GO (JP)
Application Number:
PCT/JP2016/004346
Publication Date:
April 06, 2017
Filing Date:
September 26, 2016
Export Citation:
Assignee:
RICOH CO LTD (JP)
TAKAHASHI TATSUYA (JP)
FUJITA KAZUHIRO (JP)
MARUYAMA GO (JP)
TAKAHASHI TATSUYA (JP)
FUJITA KAZUHIRO (JP)
MARUYAMA GO (JP)
International Classes:
B25J19/04; G01B11/245; G03B21/00; G03B21/14
Domestic Patent References:
WO2014183581A1 | 2014-11-20 | |||
WO2014196020A1 | 2014-12-11 |
Foreign References:
JP2002005843A | 2002-01-09 | |||
US20090153834A1 | 2009-06-18 | |||
US20050030489A1 | 2005-02-10 | |||
JP2015161801A | 2015-09-07 | |||
US20060126031A1 | 2006-06-15 | |||
US5625738A | 1997-04-29 | |||
US20140247429A1 | 2014-09-04 | |||
JP2015145975A | 2015-08-13 | |||
US20130114861A1 | 2013-05-09 | |||
JP2013257162A | 2013-12-26 | |||
JP2011130138A | 2011-06-30 |
Other References:
See also references of EP 3356092A4
Attorney, Agent or Firm:
SAKAI, Hiroaki (JP)
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