Optical Fill Light Glass, High Transparency Steel Protection, Anti-Reflective Coating, Uniform Light Emission, Durable, Suitable for Multiple Scenarios

The fill light glass is an optical window installed at the forefront of an LED fill light, integrating four core functions: "high light transmittance, impact resistance, light distribution, and protection." It directly determines the fill light efficiency and service life.

1. Material and Optical Performance

• Base Material: Ultra-clear low-iron tempered glass or borosilicate glass, with a visible light transmittance ≥91%, haze <0.2%, and color temperature deviation ≤150 K, ensuring accurate color reproduction of illuminated objects.

• Coating: Double-sided multi-layer broadband anti-reflective coating (BBAR 400–700 nm), reducing single-sided reflectivity from 4% to <0.5%, increasing overall light efficiency by 8–10%. Optional anti-fog, anti-oil, and waterproof nano-coatings with a water contact angle >110°, allowing dust and raindrops to roll off easily, maintaining high light transmittance outdoors.

• Light Distribution: The inner side can be etched with micro-prisms, micro-lenses, or frosted textures to soften LED point light sources into uniform surface light sources, with a center-to-edge light spot difference ≤15%, eliminating the "flashlight effect" in surveillance footage. It can also be made into small-angle lens glass, achieving precise 15°/30°/60° beams with an effective range of 5–80 m.

1. Mechanical and Environmental Performance

• Tempering Treatment: Surface stress ≥90 MPa, impact resistance against a 1 m free-falling steel ball without breakage, thermal shock resistance from -40°C to +150°C, meeting IK08/IK09 protection standards.