| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical interference tomograph by which the internal state of a living body can be observed in detail using bioinformation associated with metabolism of the living body. <P>SOLUTION: A light emitting section 1 emits near-infrared coherent lights having different specific wavelengths from a light source 14 to an optical interference section 2. A beam splitter 21 of the optical interference section 2 transmits the incident light to the fundus oculi and reflects a part thereof to a light wavelength shifter 22. The shifter 22 modulates the frequency of the light according to an oscillation signal S, and re-modulates the frequency of the light reflected by a movable mirror 24. The beam splitter 21 interferences the measurement light reflected at the fundus oculi with a reference light reflected by the mirror 22 and emits the interference light to a photodetection section 3. When receiving the interference light, the photodetection section 3 demodulates the detection signal indicating the intensity of the interference light using the oscillation signal S and filters high-frequency components. The photodetection section 3 calculates the cross sectional shape of the fundus oculi and the oxygen saturation SO<SB>2</SB>using the detection signal. <P>COPYRIGHT: (C)2008,JPO&INPIT |
