PROBLEM TO BE SOLVED: To provide an endoscope apparatus capable of improving airtightness of a space where an optical semiconductor device, etc. exist in a connector unit.SOLUTION: An endoscope apparatus includes a connector unit connected to an external device that transmits and receives an optical signal to and from the external device. The connector unit includes a hollow metal member 63 having two openings 63A and 63B communicated with each other, a light-emitting device 41a press-fitted to the one opening 63A side of the hollow metal member 63 so as to seal the periphery, a lens 62 provided to the other opening 63B side of the hollow metal member 63, a fixing member 68 for fixing the lens 62 to the hollow metal member 63, and an o-ring 67 pressed by the fixing member 68 which seals between the lens 62 and the hollow metal member 63.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】コネクタ部内の光半導体素子等が存在する空間の気密性を向上可能な内視鏡装置を提供すること。【解決手段】内視鏡装置は、外部装置に接続されてこの外部装置との間で光信号を授受するコネクタ部を備える。コネクタ部は、互いに連通した2つの開口63A,63Bを有する中空金属部材63と、周囲を封止可能に中空金属部材63の一方の開口63A側に圧入固定された発光素子41aと、中空金属部材63の他方の開口63B側に設けられたレンズ62と、中空金属部材63にレンズ62を固定する固定部材68と、固定部材68によって押圧され、レンズ62と中空金属部材63との間を封止するOリング67とを備える。【選択図】図5
