常用作聚焦鏡的紅外平凸鏡,材料包括BaF2,CaF2,Si,Ge,Al2O3,ZnSe以及其他各種材料。此材料為ZnSe.
產(chǎn)品指標(biāo)如下:
Diameter tolerance 0,-0.005" (+0,-0.13 mm)
Center Thickness tolerance +/-0.008" (+/-0.2 mm)
Design Wavelength 10.6 microns
Focal Length Tolerance +/-2%
Surface Quality 60/40
Clear Aperture 90% Central Diameter
Wedge Angle <3 arc min
Surface Irregularity 1/20 l at 10.6 microns
![](https://img73.ybzhan.cn/5eceadd4559dcfd2a04e3e7acf23ddd726abbfb9d55791c0fc4fe74f9900be2d9492b6d3b3bf1583.jpg)