Title:
SCANNING-TYPE OBSERVATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/185595
Kind Code:
A1
Abstract:
This scanning-type observation device (1) is provided with a light source (2) for generating illumination light, an optical fiber (4) for guiding the illumination light and emitting the illumination light from an emission end unit (3), a drive unit (5) for causing the emission end unit (3) to oscillate and the illumination light to scan in two-dimensional fashion, a light detection unit (7) for detecting return light returning from each scan position in a subject (O), a brightness detection unit (10) for detecting a brightness for each scan position from the amount of return light, a movement detection unit (11) for detecting movement of an image acquired in a current frame with respect to an image acquired in a previous frame on the basis of the brightness for each scan position, a dynamic range measurement unit (13) for measuring the dynamic range of the image acquired in the current frame when the image movement is smaller than a predetermined threshold value, and a light source control unit (12) for controlling the light source (2) so as to increase the amount of illumination light commensurately with the degree to which the brightness for each scan position is low when the dynamic range is greater than a predetermined threshold value.
Inventors:
MORI TAKESHI (JP)
Application Number:
PCT/JP2015/064554
Publication Date:
November 24, 2016
Filing Date:
May 21, 2015
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B23/26; A61B1/00; G02B21/06; H04N5/225; H04N5/238
Foreign References:
| JP2010142597A | 2010-07-01 | |||
| JP2012143264A | 2012-08-02 | |||
| JP2014033731A | 2014-02-24 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
上田 邦生 (JP)
上田 邦生 (JP)
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