A scanning characteristic measuring method for an optical scanning device capable of measuring a scanning characteristic of an actuator is provided. A step of irradiating the illumination light by bringing the tip portion 100a of the optical scanning device 100 and the scanning characteristic measurement chart 11 close to each other in the non-driving state of the actuator 103 maintaining the relative attitude of the tip portion 100a and the scanning characteristic measurement chart 11 , And adjusting the driving signal of the actuator 103 so that the scanning area by the illumination light on the scanning characteristic measuring chart 11 has a desired shape, and the scanning characteristic The scanning characteristics of the deflection angle and / or the viewing angle are measured based on the irradiation position of the illumination light on the measurement chart 11.アクチュエータの走査特性を測定可能な光走査装置の走査特性測定方法を提供する。 アクチュエータ103の非駆動状態において、光走査装置100の先端部100aと走査特性測定用チャート11とを近づけて照明光を照射するステップと、先端部100a及び走査特性測定用チャート11の相対姿勢を維持したまま、両者を所定距離離間させるステップと、走査特性測定用チャート11上での照明光による走査領域が所望の形状となるようにアクチュエータ103の駆動信号を調整するステップと、を含み、走査特性測定用チャート11への照明光の照射位置に基づいて偏角及び/又は視野角の走査特性を測定する。
