| 主权项 |
1. An optical tomograph, comprising:
a light source unit; an optical imaging head unit; a photodetection unit; a control unit; a signal processing unit; and an information input-output unit, wherein the light source unit radiates laser light of different wavelengths, wherein the optical imaging head unit includes a first optical element that splits a luminous flux including the laser light of different wavelengths outgoing from the light source unit into first and second luminous fluxes, an objective lens that focuses the first luminous flux on a sample, irradiates the sample and receives reflected light reflected from the sample as signal light, a reflector that reflects the second luminous flux as reference light without radiating the second luminous flux toward the sample, a second optical element that multiplexes the signal light and the reference light and an actuator that drives the objective lens at least in a direction of an optical axis, wherein the photodetection unit includes a plurality of photodetectors and an interference optical system that makes the signal light and the reference light interfere out of phase on each photodetector, wherein the control unit controls the actuator and a luminescent state of the laser light of different wavelengths, wherein the signal processing unit acquires the distribution on a section of an object of examination in the sample by operating using the outputs of the plurality of photodetectors for input every wavelength, acquiring a detection signal and calculating the ratio of detection signals at the different wavelengths every position in the sample, and wherein the information input-output unit includes an input device that inputs a position to be observed in the sample to the optical imaging head unit and a display that displays the distribution on the section of the object of examination. |
