PROBLEM TO BE SOLVED: To provide a small endoscope device capable of observing a subject with high definition, obtaining qualitative information of the subject by analyzing a reflection spectrum, and realizing miniaturization. An optical fiber (1) that emits illumination light supplied from a light source (209) and receives reflected light that returns from a subject (3) and illumination light emitted from the optical fiber (1) are generated on a scanning line (4) in a one-dimensional direction, An endoscope apparatus including an optical system 2 for irradiating 3 and a scanning mechanism 8 for scanning a scanning line 4 in a direction Y intersecting a one-dimensional direction. [Selection diagram] Figure 1【課題】高精細に被写体を観察でき、反射スペクトルの解析により被写体の質的な情報を取得でき、かつ、小型化を実現できる小型の内視鏡装置を提供すること。【解決手段】光源２０９から供給される照明光を出射し、被写体３から戻る反射光を受光する光ファイバー１と、光ファイバー１から出射される照明光を一次元方向の走査線４に生成し、被写体３を照射する光学系２と、一次元方向と交差する方向Ｙに走査線４を走査する走査機構８と、を備える内視鏡装置。【選択図】図１
