An optical coherence eye-fundus tomography device has a high resolution and a good operability, as well as be miniaturized and be produced at a low cost. The optical coherence eye-fundus tomography device includes: a light source unit which emits a source light beam a reference-light unit which reflects a reference light beam an inspection unit which illuminates an object with an object scanning light beam, reflected the object scanning light beam and a detection unit which obtains a tomographic image of the object on the basis of the interference light beam produced by interfering the reflected reference light beam with the reflected object light beam. For example, the light source unit emits the outgoing light beam that has a depth of focus of not less than 300 µm, and resolution that is 6 µm × 6 µm or higher in a planar direction perpendicular to a traveling direction of the outgoing light beam.
