Heat-control optics-Hot mirrors (0°) Hot Mirrors transmit the visible and reflect the near-infrared (heat) spectrum and therefore are another alternative for displacing heat. Hot Mirrors are more expensive than colour glass KG1 filters, however they divide much more sharply between the IR and visible. These Hot Mirrors remove the heat by reflection rather that absorption as in Schott Colour Glass KG type of heat-control optics. They are coated with a multilayer dielectric coating and there for can handle much more power. These Hot Mirrors are ideally suited to laser applications.

Knight Optical > Filters > Heat-control optics-Hot mirrors (0°) Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! PDF Part No. Material Size/dimensions (mm) Thickness (mm) IR Price Qty Buy 730FHQ2500 LEBG float 25 dia 3 IR reflecting £10.25 730FHQ4000 LEBG float 40 dia 3 IR reflecting £25.45 730FHQ5000 LEBG float 50 dia 3 IR reflecting £29.50 730FHQ2525 LEBG float 25 x 25 3 IR reflecting £10.00 730FHQ4040 LEBG float 40 x 40 3 IR reflecting £25.00 730FHQ5051-C LEBG float 50 x 50 1 IR reflecting £12.50 730FHQ5050 LEBG float 50 x 50 3 IR reflecting £27.85 730FHQ6565 LEBG float 65 x 65 3 IR reflecting £39.85 730FHQ8080 LEBG float 80 x 80 3 IR reflecting £42.00 Knight Optical > Filters > Heat-control optics-Hot mirrors (0°)

Specification   Transmittance (0°)*: > 92% (425-675nm) Reflectance (0°)*: > 95% (750-1150nm) Material data : LEGB float (see materials section) Diameter: +0.0 / -0.2 mm Length/width: ± 0.2 mm Thickness: ± 0.25 mm Surface quality: <60-40 Flatness: < average 5λ over 25mm (sheeted material) Parallelism: < average 10 arcmin (not guaranteed) * Average over wavelength regions stated.

Specific requirements We can manufacture Hot Mirrors to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Cutting down or edged to special shapes and sizes   · Special sizes   · Mounting (circles) Technical Data Sheets A transmittance curve is available (see data sheets) See also Heat-glass filters Cold mirrors Other short-pass filters: Schott colour-glass and UV + IR absorption filters-Glass type