50mm Dia., Extended Hot Mirror

Product Details Improved NIR Reflectance Over Standard Hot Mirrors Operating Temperatures up to 230°C Neutral Color for 5500K or 3200K Sources to ±250K Extended Hot Mirrors are designed to reduce the heat in an optical system without sacrificing the system’s visible output. While typical hot mirrors reflect from 750nm to approximately 1250nm, Extended Hot Mirrors further reduce heat by extending the reflection range to approximately 1750nm. Hot mirrors are crucial in many projection and illumination systems where high levels of heat can quickly damage sensitive components. Hot mirrors are specially coated to transmit visible light while reflecting the NIR, a major attributor to heat generation. By using a hot mirror, heat levels are limited with minimum impact on the overall system performance. Specifications General Type: Shortpass Filter Physical & Mechanical Properties Diameter (mm): 50.00 ±0.25 Thickness (mm): 3.30 ±0.2 Clear Aperture (%): ≥85 Edges: Ground Optical Properties Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More BOROFLOAT Coating: Hot Mirror, 0° Coating Type: Dielectric Coating Specification: R avg ≥90% @ 750 – 1150nm R avg ≥80% @ 1200 – 1600nm T avg ≥85% @ 425 – 675nm Wavelength Range (nm): 425 – 1600 Surface Flatness (P-V): 4 – 6λ Angle of Incidence (°): 0.00 Surface Quality: 80-50 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 247: Compliant ×