| 摘要 |
PROBLEM TO BE SOLVED: To compensate deterioration of an interference signal obtained by OCT measurement and improve a quality of tomographic information obtained by frequency analysis. SOLUTION: Light in a predetermined wavelength band emitted from a light source is divided into measurement light and reference light; reflected light produced by reflecting the divided measurement light from an object to be measured and the reference light are combined; and the intensity of the interference light of the combined reflected light and the reference light is detected by an interference signal detector 2. The intensity of the interference light combining the reflected light that the measurement light is reflected from a predetermined depth position of a substance and the reference light is previously measured, by using the substance having characteristics similar to the object instead of the object; and the attenuation factor and the refractive index obtained by the previous measurement are stored in a compensation data storing unit 51, as compensating data C. Attenuation compensation and dispersion compensation of the strength of the interference signal I is performed by using the compensation data C, by a compensating unit 52; and the tomographic information r(z) of the object is acquired by frequency analyzing the compensated interference signal Ic by a tomographic information acquiring unit 53. COPYRIGHT: (C)2008,JPO&INPIT
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