Features
- High transmission for the visible wavelength range
- Highly reflective for infrared
Cold mirrors
Mirrors
Cold mirrors
Cold mirrors are used to reflect visible light and remove heat through transmission. They should preferably be operated at an angle of incidence of 45°. The most common wavelength range for transmission through the cold mirror is 800 nm – 1200 nm. The average transmission range is T > 85%. In addition, R > 95% for 400 nm – 700 nm.
Technical data
| Cold mirrors | |
| Material | Borosilicate glass |
| Size | 15 mm to 300 mm |
| Thickness | 3.3 mm |
| Dielectric mirror coating | |
| Transmission (typical) | > 85 % between 425 nm – 1000 nm |
| Reflection (typical) | > 90% between 400 nm – 700 nm |
| Surface quality | 80/50 scratch/dig |
| Flatness | λ/2 @ 633 nm per inch |
| Protective chamfer | 0.3 mm x 45° |
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