| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain clear observation of biological information obtained by narrow-band light by forming observation images by the narrow-band light of an always appropriate brightness level even when observation conditions such as an observation object or an observation position are changed in performing a special light observation by an endoscope. <P>SOLUTION: An endoscope apparatus 100 includes a first light source 45 emitting white illuminating light; a second light source 47 emitting narrow-band light; and an imaging section that has an imaging element 21 having detection pixels of a plurality of colors and images a region to be observed. A picked-up image signal including both a return light component of the white illuminating light from the region to be observed and a return light component of the narrow-band light is output from the imaging section. The return light component of the narrow-band light is selectively extracted from the picked-up image signal, and the brightness level of the extracted return light component of the narrow-band light is changed by performing increase/decrease control of the amount of light emitted from the second light source 47. <P>COPYRIGHT: (C)2012,JPO&INPIT |
