| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple device capable of easily measuring temperature by the two-color temperature measurement method without calibration between picture images. <P>SOLUTION: A device comprises a camera 11 having an image pickup device 10 for imaging a weld zone 23, a filter table 14 which has at least a pair of two optical filters 19, 20, 21, and 22 transmitting different wavelengths respectively and is rotatably supported such that each of the optical filters passes through the optical axis 15 of the camera, a motor 17 which rotates the filter table, and a control calculation part 13 which calculates the temperature of an arbitrary point in a picture image by the two-color temperature measurement method on the basis of picture signals of two colors from the image pickup device for imaging at two wavelengths through the two optical filters. <P>COPYRIGHT: (C)2013,JPO&INPIT |
