Chalcogenide glass materials

Chalcogenide glasses have unique advantages as infrared lens materials. The processing efficiency of chalcogenide glass is high, and it can be accurately molded, which is more than 10 times higher than diamond turning, and the raw material cost is 1 / 3 of germanium single crystal. In the temperature adaptation, germanium single crystal is more "delicate", the temperature changes greatly, and the image is unstable. Chalcogenide glass can face a temperature difference of 110 ℃ from minus 40 ℃ to above 70 ℃ without pressure.