Embodiments of the present disclosure includes optical tomographic methods and systems for acquiring information based on an image precisely in a short time. In one example, an optical tomographic imaging device may irradiate light on an eye which is the object to be measured via an interferometer 13 using a wavelength scanning-type laser light source 11, and acquire a cross-sectional image. The optical tomographic imaging device may include an object lens 23 at the focus position of the two-axis tilt mirror 22. It may deflect light in the x-axis and y-axis direction using the two-axis tilt mirror 22 and obtain a three-dimensional cross-sectional image without having distortion in the optical axis direction.
