| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical image measuring device using optical coherence tomography capable of acquiring a clear image even if an object to be measured involves movement. <P>SOLUTION: A movement detection section 220 finds a Doppler frequency shift amount based on the movement velocity of a subject's eye E. A drive control section 230 finds the modulation frequency of the intensity of output light M on the basis of the Doppler frequency shift amount. A light source drive section 240 drives a light source unit 201 to output the output light M, the intensity of which is modulated by the modulation frequency. The output light M is divided into signal light S and reference light R. The signal light S via the subject's eye E and the reference light R via a reference optical path are superimposed to generate coherent light L. Two polarization components of the coherent light L have a 180-degree phase difference by a λ/4 plate 207. Polarization components L1, L2 separated by a polarization beam splitter 211 are detected by CCDs 212, 213. A computer 250 forms a tomogram on the basis of the results of the detection. <P>COPYRIGHT: (C)2011,JPO&INPIT |
