High Performance Cold Mirror
Manufactured from high-grade heat-resistant borosilicate glass, our hot and cold mirrors feature precision multilayer dielectric coatings. Hot mirrors exhibit high transmittance in the visible spectrum and strong reflectance in the infrared region, whereas cold mirrors provide high infrared transmittance and efficient visible light reflection. Hot mirrors effectively mitigate thermal effects and optimize system stability. For high-power illumination applications, the use of auxiliary air cooling is advised.
Parameters
| Material | Borosilicate glass BorofloatTM |
| Surface Accuracy | ＜5λ/25mm2 @633 nm |
| Parallelism | ＜1 arcmin |
| Surface Quality | 60-40 |
| Diameter Tolerance of Circular Substrate | + 0.0/ -0.25 mm |
| Tolerance of Square(rectangular) substrate | ± 0.25 mm |
| Thickness Tolerance | 2 mm ± 0.2 mm |
| Transmission | Tavg ＞90%@750~1150 nm |
| Reflection | Ravg ＞95%@425~675 nm |
| Angle of Incidence | 45° |
Model
| Size, mm | Thickness, mm | Visible Reflectance | Infrared Transmittance |
| Φ12.5/25.0/50.0 | 2 | Ravg > 95%@425~675 nm | Tavg > 90%@750~1150 nm |
| 12.5 x 12.5 25 x 25 35 x 35 50 x 50 80 x 80 110 x 120 | 2 |