The ultrafine imaging unit 26 according to the present invention is applicable to an insertion tip end 24a of a video scope 1, and allows the outside dimension of the insertion tip end to be configured to have an ultra-small diameter, that is, not more than several millimeters. This imaging unit has: a case body 27 having a hollow cylindrical shape that can be disposed at the insertion tip end one or more light-emitting parts 28 housed inside the case body and capable of outputting light toward an observation object and a light receiving part 29 that is housed inside the case body and capable of inputting an image obtained from the observation object that has been irradiated with light. Inside the case body, the light-emitting parts are arranged so as to encircle the periphery of the light receiving part.本發明之超極細攝像單元可適用於視頻內視鏡之插入前端部,且可將該插入前端部之外形尺寸設定成數釐米以下之超極細徑。攝像單元具有:可裝設於插入前端部之中空圓筒形外殼本體;收容於外殼本體之內部並且可朝觀察對象輸出光之至少一個發光部;及收容於外殼本體之內部並且可輸入來自光所照射之觀察對象之圖像的受光部。外殼本體之內部中,發光部沿著受光部的周圍配置。1‧‧‧軟性視頻內視鏡2‧‧‧視頻單元3‧‧‧角度調整單元4‧‧‧內視鏡單元5‧‧‧連結機構6‧‧‧視頻本體部6a‧‧‧表面6c‧‧‧第1面6d‧‧‧第2面6e‧‧‧第3面6f‧‧‧第4面7‧‧‧顯示部8‧‧‧操作部9‧‧‧監視器9a‧‧‧顯示畫面10‧‧‧電源按鈕11‧‧‧動態圖像保存按鈕12‧‧‧靜態圖像保存按鈕13‧‧‧光源控制按鈕14‧‧‧圖像再生按鈕15‧‧‧支撐框架15a‧‧‧其中一端15b‧‧‧另一端15c‧‧‧中央部分16‧‧‧橫搖機構17‧‧‧偏搖機構18‧‧‧第1旋轉軸19a,19b‧‧‧支撐銷20‧‧‧第2旋轉軸21‧‧‧橫搖方向22‧‧‧偏搖方向23‧‧‧內視鏡本體部24‧‧‧插入部24a‧‧‧前端部26‧‧‧攝像單元27‧‧‧外殼本體27a‧‧‧外周面27b‧‧‧內周面28‧‧‧發光部29‧‧‧受光部30‧‧‧保持具31‧‧‧壁部32‧‧‧第1區域33‧‧‧第2區域34‧‧‧導光部35‧‧‧光源36‧‧‧光纖37‧‧‧物鏡39‧‧‧固定具
