Patent ID: 7852484

Claim:
An optical tomographic imaging apparatus, comprising: a light control unit that combines and outputs a plurality of light beams, which includes: a light emission section capable of outputting three or more light beams swept in wavelength within different wavelength ranges from each other; a wavelength combining means having wavelength selectivity, that combines and outputs at least two of the three or more light beams; and a control means that performs control in the light emission section, or upstream or downstream of the wavelength combining means in the optical path of the light beams to cause at least one light beam is outputted during a time period which is different from a time period in which another one or more light beams are outputted, thereby causing two or more light beams having different wavelengths from each other to be combined and outputted at the same time; a beam splitting means that splits each of the light beams outputted from the light control unit into a measuring beam and a reference beam; a beam combining means that combines the reference beams with reflected beams from a measuring object when the measuring beams are irradiated on the measuring object with respect to each of the light beams; an interference beam detection means that detects interference beams produced when the reflected beams are combined with the reference beams by the beam combining means as interference signals with respect to each of the light beams; and a tomographic image processing means that generates a tomographic image of the measuring object using the interference signals.