| 摘要 |
PURPOSE:To observe a picture with good resolving power by putting the objective-side end part of an image guide fiber in reciprocal torsional oscillation during observation. CONSTITUTION:For the observation using the image guide fiber 1, respective driving devices 15 are put in operation with switches, etc., and controlled by a synchronizing means 19 to excite electromagnets 17 similarly. Then, a magnetic piece 16 is drawn against the force of a tension spring 18 to turn both end parts 5 and 6 of the fiber 1 together with caps 7 and 8. When the electromagnet 17 is turned off, they turn reversely by the exciting force of the tension spring 18. Then, the electromagnet 17 is excited intermittently to putting the end parts 5 and 6 in reciprocal turn around their optical axis, i.e. torsional oscillation. Thus, the objective-side end part 5 and ocular-side end part 6 of the fiber 1 are supported by bearing devices 12 and 13 respectively during the observation and put in reciprocal torsional oscillation synchronously at the same speed. |
