冷镜
冷镜是热镜的反面，它反射可见光并透射红外光。 它们的涂层都是**面的，并且像热镜一样，也沉积在低膨胀率的材料上，例如硼硅酸盐玻璃。 这些反射镜通常在随机偏振光中以45°入射角使用。
cold mirror general specifications
thickness: 3.0mm ±0.5mm
size tolerance: +0.0mm/-0.5mm
min. clear aperture: 95% of outside dimension
substrate material: borosilicate glass
flatness: 5–10 waves per 25mm
parallelism: 3 arc minutes or better
surface quality: 80/50 per mil-o-13830
humidity and abrasion: per mil-c-67**
max. operating temperature: +200°c
mechanical: unmounted
description part no.
cold mirror, 25mm diameter x 3mm thick 645fk84-25
cold mirror, 50mm diameter x 3mm thick 645fk84-50
cold mirror, 50mm x 50mm x 3mm thick 645fk84-50s
热镜
热镜按其名称说明执行：它们反射热量并透射可见光。 所有涂层均被归类为坚硬的**表面电介质，并且将达到或超过规定的湿度和磨损规范。 为防止高温应用导致开裂或开裂，所有涂层均沉积在低膨胀材料（例如硼硅酸盐玻璃）上。
hot mirror general specifications
thickness: 3.0mm ±0.5mm
size tolerance: +0.0mm/-0.5mm
min. clear aperture: 95% of outside dimension
substrate material: borosilicate glass
flatness: 5–10 waves per 25mm
parallelism: 3 arc minutes or better
surface quality: 80/50 per mil-o-13830
humidity and abrasion: per mil-c-67**
max. operating temperature: +200°c
mechanical: unmounted
description part no.
hot mirror, 512mm diameter x 3mm thick 775fw82-12.5
hot mirror, 25mm diameter x 3mm thick 775fw82-25
hot mirror, 50mm diameter x 3mm thick 775fw82-50
hot mirror, 50mm x 50mm x 3mm thick 775fw82-50s