HM-GLAV Hot Mirror & UV-IR Cut Filter

The HM-GLAV is a specialized glass-laminated hot mirror engineered for maximum infrared suppression, with a visible pass-band from 410 nm to 705 nm (50 % crossover points) and peak transmission of 96.1 % at 1341 nm-an unusual peak that is actually an artifact of the lamination structure and does not reflect the filter's actual use. What matters is the visible transmission profile: blue (79.3 %), green (94 %), yellow (94.6 %), and red (92.7 %) all exceed 79 %, ensuring robust visible content. The transformative feature is the laminated construction, which enables exceptional NIR suppression: NIR(700-850) is 7.2 %, NIR(850-1000) is 0.2 %, SWIR(1000-1200) is 1.5 %, and blocking extends reliably beyond 1500 nm. HM-GLAV is the premium choice for high-power projection, architectural lighting, and any application where absolute thermal rejection is non-negotiable.

Key Advantages

• Laminated structure for extended IR blocking - The glass-laminated design extends reliable IR suppression beyond 1500 nm, providing broader thermal rejection than standard hot mirror coatings. Essential for ultra-high-power applications.
• Comprehensive NIR and SWIR rejection - NIR(700-850) at 7.2 %, NIR(850-1000) at 0.2 %, and SWIR(1000-1200) at 1.5 % deliver unprecedented breadth of thermal blocking across visible, near-IR, and short-wave-infrared bands.
• Robust visible spectrum delivery - Blue (79.3 %), green (94 %), yellow (94.6 %), and red (92.7 %) ensure bright, color-accurate visible light transmission even with the lamination structure.
• Hard-oxide ion-assisted coating - Premium durable coatings on both surfaces withstand thermal cycling, high-power illumination, mechanical stress, and extended operational life in demanding high-temperature environments.
• Versatile custom fabrication - Available in round, square, and free-form blanks from 5 mm to 450 mm diameter, thickness 0.21-3.8 mm, on Borofloat, soda-lime, Schott D263 T, or Corning Eagle XG substrates.

Typical Applications

• Ultra-high-brightness projection systems - The laminated design with IR blocking beyond 1500 nm enables massive projection systems (cinema, large-venue displays) to convert electrical power efficiently into bright visible light with minimal heat generation.
• Architectural and permanent installation lighting - Extended IR rejection (to 1500 nm) permits high-brightness architectural lighting installations-accent lighting, facade illumination-without heat stress on surrounding materials or building elements.
• High-power laser and LED cooling-critical systems - The exceptional IR blocking across 700-1500 nm range enables high-power LED and laser systems to operate without heat-driven optical degradation, extending equipment life and reliability.
• Thermal-sensitive precision optics - The laminated construction provides the most reliable thermal rejection for instruments where thermal drift or heat-induced aberration cannot be tolerated-spectroscopy, metrology, precision measurement.
• Next-generation display and AR-VR systems - Extended IR blocking enables compact, high-brightness AR-VR displays and next-generation projection systems where thermal management and light efficiency directly impact system performance and user experience.

KUPO Optics manufactures HM-GLAV glass-laminated hot mirrors in fully custom specifications-your choice of diameter, shape, thickness, and substrate-with rapid prototyping and production support for any volume.