| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an endoscope with a ranging function, of which the degradation of ranging precision is suppressed. <P>SOLUTION: The endoscope with a ranging function includes: distance measuring means 23 including a light source 23a which emits light at a wavelength different from that of illuminating light for observation, an optical path dividing member 23b which divides the light from the light source into a signal optical path S1 and a reference optical path R1 and combines return light of signal light and return light of reference light, a mirror 23c provided on the reference optical path, a photodetector 23e which detects return light of combined signal light and reference light, and a distance detection part 23f which detects a distance of a measurement object 9 in individual scanning ranges on the basis of prescribed information obtained at the time of detection of return light of signal light and reference light; an optical scanning fiber 14 provided on the signal optical path; an optical scanning part 15; and a spot light generation part 16. A reflecting part 15 is provided in a part of a scanning range of the optical scanning part in the vicinity of a front end of the optical scanning fiber. <P>COPYRIGHT: (C)2013,JPO&INPIT |
