Title:
SUPER-MAGNIFYING OBSERVATION ENDOSCOPE
Document Type and Number:
Japanese Patent JP2015204973
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a super-magnifying observation endoscope capable of easily observing walls of the cardia on a super-magnified basis.SOLUTION: The super-magnifying observation endoscope comprises: a confocal optical system 31 which is arranged within an insertion section extending forward from an operation unit, and the optical axis OA1 of which is parallel with the axis of the insertion section; a first light guide 34 which is arranged within the insertion section and allows light to enter the confocal optical system; a light-transmissive observation window 25 arranged on a peripheral surface of the insertion section; a right-angled prism 33 or a mirror 61 which is arranged within the insertion section, and which reflects the light emitted by the confocal optical system in a direction orthogonal to the axis of the insertion section so that the light is condensed to a first condensing point set on a surface of the observation window or in the vicinity on the surface outside the observation window; and a second light guide 34 which receives, at a second condensing point confocal with the first condensing point, the light emitted by the confocal optical system and reflected by one of the right-angle prism and the mirror and the first condensing point and sends the light to a confocal image processor 50.
Inventors:
NUMAZAWA YOSHINOBU
Application Number:
JP2014086525A
Publication Date:
November 19, 2015
Filing Date:
April 18, 2014
Export Citation:
Assignee:
HOYA CORP
International Classes:
A61B1/00
Domestic Patent References:
| JP2007209450A | 2007-08-23 | |||
| JP2009063637A | 2009-03-26 |
Attorney, Agent or Firm:
Kunio Miura
Kuniyo Miura
Kuniyo Miura