| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical probe capable of suppressing interference of illumination light even if a measuring wavelength band is narrowed and if the brightness of the illumination light is increased. SOLUTION: In the optical probe 4 constituting an endoscope apparatus 1, the light path lengths of two illumination light guide paths including a light guide path composed of an optical fiber 32a and an illumination optical fiber 13a and a light guide path composed of an optical fiber 32b and an illumination optical fiber 13b for illuminating an object for observation (a target region 22 to be observed) are different from each other. Accordingly, if the measuring wavelength band is narrowed or if the brightness of the illumination light is increased, generation of interference fringes can be suppressed, and as a result, noise included in the light detected by a detector 3 can be reduced and the accuracy in the observation of the object for observation can be improved. COPYRIGHT: (C)2011,JPO&INPIT
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