PROBLEM TO BE SOLVED: To provide a probe for OCT capable of easily performing zero point correction.SOLUTION: A probe 1 is used for an optical coherence tomography imaging device that irradiates measurement light to a subject, and collects scattering light that is reflected from the subject and returns. The probe 1 includes scan means 70 composed of galvanometer mirrors 72 and 73 that change an irradiation direction of the measurement light. The scan means 70 includes actuators 72b and 73b that switch reflectors 72a and 73a for reflecting the measurement light between a state in which the measurement light is reflected at the subject, hits the subject, and returns as scattering light, and a state in which the measurement light is caused to be irregularly reflected in the probe 1.SELECTED DRAWING: Figure 4【課題】ゼロ点補正を容易に行えるようにすることが可能なＯＣＴ用プローブを提供する。【解決手段】プローブ１は、計測光を被写体に照射して被写体から反射して戻って来た散乱光を回収する光干渉断層画像生成装置に使用される。プローブ１は、計測光の照射方向を変化させるガルバノミラー７２，７３から成る走査手段７０を備えている。走査手段７０は、計測光を反射する反射鏡７２ａ，７３ａを、被写体に向けて反射させて被写体に当たって散乱光として戻って来る状態と、計測光をプローブ１内で乱反射させる状態と、に切り換えるアクチュエータ７２ｂ，７３ｂを備えている。【選択図】図４
