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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, an improved method for the purification of raw materials and glass melting process for transmitting 2 ~ 12 μm As Se Te glass infrared optical fiber is introduced. The effects of loss, fill factor K and surface reflection on transmittance were analyzed. The prepared infrared glass optical fiber, WQF 4 0 0 Fourier transform infrared fiber spectrometer to test the loss, the optical fiber loss was significantly reduced. An As Se Te glass optical fiber having a monofilament diameter of φ ≤ 80 μm was formed into an image bundle of 100 pixels × 100 pixels and a length of 2 m. The front and rear ends are respectively configured with a focusable infrared lens, and the entrance end is aligned with a hole of 4 mm at 0 ° C. in a black body furnace at φ = 3 mm at the exit end. The output end is connected with a thermal imager. After optical scanning and signal processing, The computer screen shows a circular black body thermal image. The results show that using As Se Te glass infrared imaging beams in special environments, the transmission of thermal images is one of the best designs.