Heat-Transmitting Cold Mirrors
Heat-Transmitting Cold Mirrors
Cold mirrors are heat-transmitting mirrors that are designed to work as longpass filters by reflecting visible wavelengths at 45° angle of incidence, while transmitting near-infrared wavelengths.
- Remove unwanted heat from an optical system
- Reflect VIS light and transmit NIR heat at 45°
- 25.4 mm diameter or 50.8 mm square filters See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 10CMR-45Cold Mirror, 25.4 mm, 45° AOI, 780-2500 nm Transmittance | In Stock | ||||
 | 20CMS-45Cold Mirror, 50.8 x 50.8 mm, 45° AOI, 780-2500 nm Transmittance | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More |
Specifications
- TypeCold Mirror
- Transmittance Range780-2500 nm
- TransmissionTavg≥85% 780-1250 nm; Tavg≥80% 850-2500 nm
- Reflectance Band400-700 nm
- ReflectanceRavg≥95%
- Angle of Incidence45° ±5°
- MaterialBorofloat® borosilicate float glass
- Surface Quality80-50 scratch-dig
- Surface Flatness6–8λ per 25.4 mm at 546.1 nm over the clear aperture
- Thickness3.3 mm
- Thickness Tolerance±0.2 mm
- Size Tolerance±0.4 mm
- Clear Aperture≥central 90% of dimensions
- Temperature Range-100 to 500°C
Features
Transmit Heat Away From Optical Systems
Cold mirrors reflect visible wavelengths at a 45° angle of incidence while transmitting IR wavelengths.
Cold Mirror Transmission by Wavelength
