Title:
ILLUMINATING DEVICE AND ENDOSCOPE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2017/175391
Kind Code:
A1
Abstract:
An illumination device includes at least four narrow band light sources (LS11-LS13, LS21-LS23), a plurality of primary combiners (CB1, CB2) that combine narrow band light beams emitted from at least two of the narrow band light sources, and a single secondary combiner (CB3; CP) that combines the primary combined light beams combined by the plurality of primary combiners, and the secondary combined light beam combined by the secondary combiner is emitted as an illumination light beam. The plurality of narrow band light sources are grouped into a plurality of groups on the basis of an illumination characteristic as a grouping criterion that includes at least one of an emission light quantity, an emission wavelength, and an emission timing so that narrow band light sources that satisfy prescribed conditions in the illumination characteristic are included in the same group. A plurality of narrow band light sources that belong to the same group are connected to the plurality of primary combiners so that narrow band light beams emitted from these narrow band light sources are distributed to the plurality of primary combiners.
Inventors:
DAIDOJI BAKUSUI (JP)
ITO TAKESHI (JP)
ITO TAKESHI (JP)
Application Number:
PCT/JP2016/061580
Publication Date:
October 12, 2017
Filing Date:
April 08, 2016
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
H01S5/02
Foreign References:
| JP2007041342A | 2007-02-15 | |||
| JP2005189385A | 2005-07-14 | |||
| JP2012194448A | 2012-10-11 | |||
| JPH11119733A | 1999-04-30 | |||
| JP2006004839A | 2006-01-05 |
Attorney, Agent or Firm:
KURATA, Masatoshi et al. (JP)
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