An optical tomograph, comprising: a light source unit (10, 110) for emitting a plurality of light beams La and Lb, each of which has a continuous spectrum within a corresponding discrete wavelength band (λ1 and λ2); light dividing means, for dividing the light beams (La, Lb) emitted from the light source unit into corresponding measuring light beams (L1a, L1b) and corresponding reference light beams (L2a, L2b); combining means for combining reflected light beams (L3a, L3b) which are the measuring light beams (L1a, L1b) reflected by a measurement target when the measuring light beams (L1a, L1b) are irradiated thereon, with the reference light beams (L2a, L2b) divided by the light dividing means; interference light detecting means, for detecting interference light beams (L4a, L4b), which are formed by the reflected light beams (L3a, L3b) and the reference light beams (L2a, L2b) being combined by the combining means, for each of the light beams (La, Lb) as interference signals (ISa, ISb); and tomographic image processing means, for generating a tomographic image of the measurement target employing a plurality of interference signals (Isa, Isb) detected by the interference light detecting means, characterized in that the tomographic image processing means includes a frequency analyzing means for detecting a plurality of pieces of depth dependent intermediate tomographic data (ra(z), rb(z)) obtained at a single depth position (z) of the measurement target by administering frequency analysis on each of the interference signals (ISa, ISb), a tomographic data processing means for generating, based on the plurality of pieces of intermediate tomographic data (ra(z), rb(z)), tomographic data (r(z)) to be employed in generating the tomographic image, by calculating the product of the intermediate tomographic data (ra(z), rb(z)), and a tomographic image generating means for generating the tomographic image by employing the tomographic data (r(z)). a light source unit (10, 110) for emitting a plurality of light beams La and Lb, each of which has a continuous spectrum within a corresponding discrete wavelength band (λ1 and λ2); light dividing means, for dividing the light beams (La, Lb) emitted from the light source unit into corresponding measuring light beams (L1a, L1b) and corresponding reference light beams (L2a, L2b); combining means for combining reflected light beams (L3a, L3b) which are the measuring light beams (L1a, L1b) reflected by a measurement target when the measuring light beams (L1a, L1b) are irradiated thereon, with the reference light beams (L2a, L2b) divided by the light dividing means; interference light detecting means, for detecting interference light beams (L4a, L4b), which are formed by the reflected light beams (L3a, L3b) and the reference light beams (L2a, L2b) being combined by the combining means, for each of the light beams (La, Lb) as interference signals (ISa, ISb); and tomographic image processing means, for generating a tomographic image of the measurement target employing a plurality of interference signals (Isa, Isb) detected by the interference light detecting means, characterized in that the tomographic image processing means includes a frequency analyzing means for detecting a plurality of pieces of depth dependent intermediate tomographic data (ra(z), rb(z)) obtained at a single depth position (z) of the measurement target by administering frequency analysis on each of the interference signals (ISa, ISb), a tomographic data processing means for generating, based on the plurality of pieces of intermediate tomographic data (ra(z), rb(z)), tomographic data (r(z)) to be employed in generating the tomographic image, by calculating the product of the intermediate tomographic data (ra(z), rb(z)), and a tomographic image generating means for generating the tomographic image by employing the tomographic data (r(z)).