PROBLEM TO BE SOLVED: To enable a subject in a body cavity to be imaged without causing optical deterioration by a relay lens.SOLUTION: An endoscope apparatus 100 includes illumination means 112 for illuminating a subject in a body cavity, an insertion part 110 having light guide means 113 and 114 for guiding the reflection light from the subject, a light source part 120 for emitting illumination light for illuminating the subject, and an imaging part 130 for receiving the reflection light guided by the light guide means and outputting an imaging signal of the subject. The light guide means includes an objective lens 113 disposed at the tip of the insertion part 110 for condensing the reflection light from the subject and emitting the light, and a hollow light guide area 114 arranged between the objective lens and the imaging part for guiding the reflection light emitted by the objective lens to the imaging part. The illumination means includes a fiber disposed at the outer edge of the objective lens and the hollow light guide area for guiding the illumination light emitted from the light source part to the neighborhood of the subject.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】リレーレンズによる光学的な劣化が生じることがなく、体腔内の被写体の撮像を可能とする。【解決手段】内視鏡装置100は、体腔内の被写体を照明する照明手段112と、被写体からの反射光を導光する導光手段113,114とを有する挿入部110と、被写体を照明するための照明光を出射する光源部120と、導光手段により導光された反射光を受光して被写体の撮像信号を出力する撮像部130とを備える。導光手段は、挿入部110の先端部に配置され、被写体からの反射光を集光して出射する対物レンズ113と、対物レンズと撮像部との間に配置され、対物レンズにより出射された反射光を撮像部に導光する中空導光領域114とを含む。照明手段は、対物レンズおよび中空導光領域の外縁に配置され、光源部から出射される照明光を被写体付近に導光するファイバを含む。【選択図】図1
