PROBLEM TO BE SOLVED: To acquire a high resolution fundus image in a short time by detecting a scanning position of measuring light quickly and accurately.SOLUTION: An imaging device for scanning measuring light on an object to be examined, and generating an image based on the reflection light from the object to be examined includes: a scanning mechanism for scanning the measuring light in a scanning range of the object to be examined； a light blocking part for transmitting or blocking at least part of the measuring light in an arbitrary region set corresponding to the scanning range； a light detection part for detecting at least part of the measuring light transmitted through or reflected by the arbitrary region； a state detection part for detecting a drive state of the scanning mechanism based on the at least part of the measuring light that has been detected； and an image generation means for generating an image based on the reflected light and the detected drive state.SELECTED DRAWING: Figure 3【課題】測定光の走査位置を素早く高精度に位置を検出することで、短時間で高解像度の眼底画像の取得を可能とする。【解決手段】被検査物上で測定光を走査し、被検査物からの反射光に基づいて画像を生成する撮像装置において、被検査物における走査範囲で測定光を走査する走査機構と、走査範囲に対応して設定された任意の領域において測定光の少なくとも一部の透過又は遮光を行う遮光部と、任意の領域を透過又は反射した測定光の少なくとも一部を検出する光検出部と、検出された前記測定光の少なくとも一部に基づいて走査機構の駆動状態を検出する状態検出部と、反射光と、検出された駆動状態とに基づいて画像を生成する画像生成手段と、を配する。【選択図】図３
