Endoscope

In an endoscope, a G2 filter unit, a B2 filter unit, and a light shading filter unit during narrow range light observation of tissue in a body cavity by a second filter set of the rotary filter make the illumination light a 2-band narrow range surface sequential light having a discrete spectral char...

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Bibliographic Details
Main Author ATONO KAZUHIRO,YAMAZAKI KENJI,OSHIMA MUTSUMI,AMANO SHOICHI
Format Patent
LanguageEnglish
Published 01.08.2007
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:In an endoscope, a G2 filter unit, a B2 filter unit, and a light shading filter unit during narrow range light observation of tissue in a body cavity by a second filter set of the rotary filter make the illumination light a 2-band narrow range surface sequential light having a discrete spectral characteristic. The imaging signal acquired by a CCD using the B2 filter unit creates a band image having tissue information at the shallow layer. The imaging signal acquired by the CCD using the G2 filter unit creates a band image having tissue information at the intermediate layer. Thus, it is possible to obtain tissue information at a desired deep portion in the vicinity of the surface of a mucosa by a simple structure at a reasonable cost.
Bibliography:Application Number: CN2005829053