The 20CMR-45 Cold Mirror is a 50.8 x 50.8 mm square 45° mirror used as a heat control filter. Our cold mirrors are heat-transmitting longpass filters designed to reflect 400-700 nm visible wavelengths while transmitting 780-2500 nm near-infrared wavelengths. These filters can be used to remove heat from an optical system.
类型
Cold Mirror
镜片尺寸
50.8 x 50.8 mm
透射范围
780-2500 nm
透射
Tavg≥85% 780-850 nm; Tavg≥80% 850-2500 nm
反射波段
400-700 nm
反射率
Ravg≥95%
入射角
45° ±5°
材料
Borofloat® borosilicate float glass
表面质量
80-50 scratch-dig
表面平面度
6–8λ per 25.4 mm at 546.1 nm over the clear aperture
厚度
3.3 mm
厚度公差
±0.2 mm
尺寸公差
±0.4 mm
通光孔径
≥central 90% of dimensions
温度范围
-100 to 500°C
清洁
20 cmr-45冷镜是一个50.8 x 50.8毫米平方45°镜子用作热控制过滤。我们的冷镜是热透射长通滤波器,设计用于反射400-700纳米可见波长,同时透射780-2500纳米近红外波长。这些过滤器可以用来除去光学系统中的热量。