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Heat Control Filters
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Heat Control Filters - 1

O p t i c s 561 Email: sales@newport.com • Web: newport.com WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Heat Control Filters Our hot mirrors are heat-reflecting mirrors/filters designed to transmit visible wavelengths while reflecting near-infrared heat generating wavelengths. Our cold mirrors are heat-transmitting mirrors/filters designed to reflect visible wavelengths while transmitting near-infrared wavelengths. These filters can be used to remove heat from an optical system. • Hot mirrors reflect near-IR heat and transmit visible light at 0° • Cold mirrors reflect visible light and transmit near-IR heat at 45° • Available in 25.4 mm diameter and 50.8 mm square sizes. Specifications Material Borofloat® borosilicate float glass Surface Flatness 6–8ë per 25.4 mm at 546.1 nm over the clear aperture Clear Aperture central 90% of dimensions Surface Quality 80-50 scratch-dig Dimensions ±0.4 mm Thickness 3.3 ±0.2 mm S2 Coating None Temperature 500 °C maximum Cleaning Non-abrasive method, acetone or isopropyl alcohol on lens tissue recommended (see page 622) IR & UV Visible Hot Mirror (0°) Visible IR Cold Mirror (45°) Coatings Type Wavelength Reflectivity & Transmission Angle of Incidence Hot Mirror 200–390 nm 420–690 nm 725–1550 nm Tavg1.0% Tavg85% Ravg90 % 0° ±15° Cold Mirror 400–700 nm 780–1250 nm 850–2500 nm Ravg95 % Tavg85% Tavg80% 45° ±5° Ordering Information Model Type Dimensions (mm) 10HMR-0 Hot Mirror 25.4ö 20HMS-0 Hot Mirror 50.8 x 50.8 10CMR-45 Cold Mirror 25.4ö 20CMS-45 Cold Mirror 50.8 x 50.8 Spring Loaded Filter Holders page 688

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