An optical tomographic imaging apparatus includes a first lens, a second lens and a scanning unit on an optical path of measurement light that irradiates an object to be examined. The second lens has a focal length longer than a focal length of the first lens. A portion of the object to be examined is disposed at a focal position of the first lens, and the scanning unit is disposed at a focal position of the second lens. The scanning unit scans the measurement light via the second lens with a smaller angle than an angle at which the measurement light irradiates the object to be examined via the first lens.
