| 摘要 |
PURPOSE:To automatically align cores of single mode optical fibers by putting the center of the cores on coordinates and finding the location of the center numerally from video signals obtained by using a microscope and TV camera. CONSTITUTION:An observed image focussed on the core of the end part of an optical fiber 10 by means of a microscope 16 is photoelectrically scanned by the image pickup tube of a TV camera 18 and a video signal is generated. At this time, an intensity distribution which is produced when one scanning line 241 (or 242) scans a fiber image 100 is inputted into a computer 20. By using the computer 20, abscissas Z2 and Z3 corresponding to both sides of a bright part in the vicinity of the center of the observed image 100 are found, and then, coordinates D at almost center of the Z2 and Z3 are found. Thereafter, coordinates Z5 of the maximum value between the Z2 and D and Z3 and D are found and minimum values A1 and A2 between the D and Z5 and D and Z6 are found, and finally, the coordinates A0 of the center of the A1 and A2 are found. By moving the optical fibers 10 so that the coordinates A0 of right side and left side optical fibers 10 coincide with each other, the cores are automatically aligned. |
