PROBLEM TO BE SOLVED: To suppress dew condensation on an optical element. SOLUTION: An endoscope camera head 5 is inserted into a subject, and an insertion portion 2 for capturing a subject image from the subject is detachably connected to the housing 51, which is gripped by a user. An optical element 52 that is translucent and is provided in the housing 51 to seal the housing 51, and a subject image provided in the housing 51 and captured in the housing 51 via the optical element 52. It includes an image pickup device 541 for taking an image. The housing 51 is provided with a dew condensation forming portion 51B which has a smaller thermal resistance value than the optical element 52 and serves as a through-passage for heat inside and outside the housing 51. [Selection diagram] Fig. 2【課題】光学素子への結露を抑制すること。【解決手段】内視鏡用カメラヘッド５は、被検体内に挿入されるとともに当該被検体からの被写体像を取り込む挿入部２が着脱自在に接続され、ユーザによって把持される筐体５１と、透光性を有するとともに筐体５１に設けられることで筐体５１を密閉する光学素子５２と、筐体５１内に設けられ、光学素子５２を介して筐体５１内に取り込まれた被写体像を撮像する撮像素子５４１と、を備える。筐体５１には、光学素子５２よりも熱抵抗値が小さく、筐体５１内外の熱の貫流路となる結露形成部５１Ｂが設けられている。【選択図】図２
