我们业已发现光学纤维可以制成非常明亮的孔光源。这些光源在限制光学检验仪器空间的地方应用是特别有价值的,而且在大孔径光锥中也是需要的。开始取-25cm左右长度的纤维光学束,从具有相同尺寸的200根纤维束中取出一根,直径为60μm。在下端使用丙烷喷灯,我们即刻把纤维的一端插入到喷灯咀的火焰上,纤维将立刻熔化并形成一球,同时该球将随 We have found that optical fibers can be made into very bright hole light sources. These light sources are of particular value where limiting the space of the optical inspection equipment and are also needed in large aperture light cones. A fiber optic bundle with a length of about 25 cm was taken out and one of 200 fiber bundles having the same size was taken out to a diameter of 60 m. Using a propane torch at the lower end, we immediately insert one end of the fiber into the flame of the torch nozzle and the fiber melts immediately to form a ball. At the same time the ball will follow