ENDOSCOPE IMAGING SYSTEM

PROBLEM TO BE SOLVED: To observe a fluorescent part and the living body of the other part with proper brightness without performing angle adjustment of the blue band pass filter of a light source. SOLUTION: An endoscope imaging system 1 has a light source apparatus 2 capable of emitting illumination light from UV to visible light and a PDD endoscope 3 for observing a subject image. The light source apparatus 2 incorporates a blue band pass filter 11 which passes through a PDD exciting wavelength and whose angle is fixed. The PDD endoscope 3 incorporates a PDD filter 20. The spectral transmission characteristics of the blue band pass filter 11 and the PDD filter 20 are set to be transmission characteristics where two spectral characteristics are separated without providing a large superimposing part at the blue band pass filter 11 and the PDD filter 20. In the blue band pass filter 11, the blocking ratio of light is set to be low over the wide range of a wavelength from blue to green to generate leaked light. The part of the transmitted light form the superimposed part with the PDD filter 20. COPYRIGHT: (C)2006,JPO&NCIPI