2m长As-Se-Te玻璃红外光纤传像束

2 meter length IR coherent bundle of As-Se-Te glass fibers

文中介绍了传输 2～ 12 μmAs Se Te玻璃红外光纤所用原料提纯和玻璃熔制工艺改进的方法。分析了损耗、填充系数K和面反射对透过率的影响。将制备出的红外玻璃光纤 ,用WQF 4 0 0傅里叶变换红外光纤光谱仪测试其损耗 ,光纤损耗值明显降低。把单丝直径 φ≤ 80 μm的As Se Te玻璃光纤制成 10 0像元× 10 0像元、长度为 2m的传像束。前、后两端分别配置可调焦的红外透镜 ,入端对准 5m处 4 0 0℃黑体炉 φ =3mm的小孔 ,出端与热像仪连接 ,经过光学扫描和信号处理后 ,在计算机屏幕上显示出圆形的黑体热像。结果表明 ,在特殊环境中用As Se Te玻璃红外传像束 ,传输热像是最佳设计方案之一。

In this paper, improving methods of purifying raw el ements and melting technology of As-Se-Te glass fibers in 2～12μm wave band w ere introduced. Effect of the fiber loss, packing fracting K and surface ref lection on the transmittance was analyzed respectively. The loss of As-Se-Te g lass fiber measured by FTIR spectrometer was obviously lower. By using the As-S e-Te glass fibers, 100×100 pixels 2m length coherent fiber bundles were made. While coupling one end of the bundles to the target area of the IR TV camera thr ough the lens system, the other end was aimed at a 3mm diameter hole at 5m away. This small hole had been homogeneously injected by ideal radiator. The thermal image was delivered through the boundles and was clearly observed on the TV scre en. The results show that As-Se-Te IR coherent bundles are one of the best des ign for delivery of thermal images in special circumstance s.