Title:
ENDOSCOPIC SYSTEM AND OPERATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/159817
Kind Code:
A1
Abstract:
Provided are an endoscopic system and an operation method therefor that, when light is emitted by switching among a plurality of illumination light beams, are capable of accurately controlling the light emission amount of an illumination light beam even in an illumination light beam switching period. A rolling shutter-type imaging sensor (48) outputs a switching-period image signal in a switching period during which switching is performed between a first illumination light beam and a second illumination light beam. By using the switching-period image signal, a first brightness calculation coefficient, and a second brightness calculation coefficient, a brightness information calculation unit (54) calculates switching-period brightness information that indicates brightness of a to-be-observed object in the switching period. On the basis of the switching-period brightness information, a light source control unit (21) controls the light emission amount of the first illumination light beam or the second illumination light beam.
Inventors:
KURAMOTO MASAYUKI (JP)
Application Number:
PCT/JP2019/004485
Publication Date:
August 22, 2019
Filing Date:
February 07, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B1/06; A61B1/00; G02B23/24; G02B23/26
Domestic Patent References:
| WO2010055938A1 | 2010-05-20 | |||
| WO2016035829A1 | 2016-03-10 | |||
| WO2017047113A1 | 2017-03-23 | |||
| WO2014045647A1 | 2014-03-27 | |||
| WO2013069644A1 | 2013-05-16 |
Foreign References:
| JP2015037565A | 2015-02-26 | |||
| JP2015160012A | 2015-09-07 | |||
| JPH09262206A | 1997-10-07 |
Attorney, Agent or Firm:
KYORITSU INSTITUTE (JP)
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