At the time of the use of the spectrum endoscope, precision it sets to the spectral characteristics which are suited for working condition well. In the insertion section which is inserted into the coelom the channel which is provided according to longitudinal direction (3) and the image pickup section which the insertion section (2) acquires the picture near the point (8) and the said image pickup section (8) incidence via the channel (3) wave length of the light which the modification possible variable spectrum section (7) with, radiation to do the light of known wave length quality, or to possess known absorption quality, the image pickup section (8) incidence can point to the wave length of the light which it can point the image pickup section (8) the standard optical component which is introduced into the range of vision range (10) with, the variable spectrum section (7) withWhile changing, through the channel, the variable spectrum section (7) the calibration section which calibrates spectral characteristics (12) with the spectrum endoscope which it possesses it offers (1) the standard optical component which is acquired the standard optical component which (3) is introduced (10) the image the image pickup section (8) the control section which it makes photograph (11) with, the image pickup section (8) by (10) on the basis of the picture.分光内視鏡の使用に際して、使用条件に適した分光特性に精度よく設定する。体腔内に挿入される挿入部に長手方向に沿って設けられたチャネル(3)と、挿入部(2)の先端部付近の画像を取得する撮像部(8)および該撮像部(8)に入射させる光の波長を変更可能な可変分光部(7)と、既知の波長特性の光を出射し、または既知の吸収特性を有し、チャネル(3)を通じて撮像部(8)の視野範囲内に導入される基準光部材(10)と、可変分光部(7)により撮像部(8)に入射させる光の波長を変化させつつ、チャネル(3)を介して導入された基準光部材(10)の像を撮像部(8)に撮影させる制御部(11)と、撮像部(8)により取得された基準光部材(10)の画像に基づいて、可変分光部(7)の分光特性を較正する較正部(12)とを有する分光内視鏡(1)を提供する。
