| 摘要 |
PROBLEM TO BE SOLVED: To easily calibrate the shift amount of the incident end of an image guide and to prevent the occurrence of the artifact in a composite image. SOLUTION: A calibration device 90 is provided with a calibration light source 91, a calibration CCD 98, and a personal computer (PC) 93. The calibration light source 91 causes light to be incident on the emission end of the image guide 31. The light incident on the image guide 31 is emitted as spot light Lsp from a tip surface 20a. The PC 93 turns on the calibration light source 91, drives a piezoelectric element 35 to shift the incident end of the image guide 31, and causes the calibration CCD 98 to capture an image of the spot light Lsp. The PC 93 detects the amount of displacement of the spot light Lsp from the image obtained by the calibration CCD 98. The PC 93 determines, according to the result of a comparison between the detected amount of displacement and a defined amount, the drive condition of the piezoelectric element 35 such that the amount of shift of the incident end of the image guide 31 is the defined amount. COPYRIGHT: (C)2011,JPO&INPIT
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