ESS Crossbow IR Protection Lens

Overview The ESS IR Protection Lenses are drop-in replacements for the ESS Crossbow and Crosshair glasses. They protect against laser threats in both the visible and infrared (IR) spectrums. Their extra-thick 2.4mm polycarbonate construction also provides excellent protection from impacts and debris. What’s Included 1x ESS Crossbow LPL-B Replacement Lens Specs TERMINOLOGY Optical density (OD) measures how much a filter attenuates laser light at a specific wavelength. A higher OD value means greater protection from laser radiation. Visible Light Transmission (VLT):  While OD focuses on laser light attenuation, VLT indicates how much visible light passes through the filter. OD 4 vs OD 5: An OD 4 filter allows 0.01% of the laser light to pass through, while an OD 5 filter allows only 0.001%. FEATURES LPL-B Lens technology blocks non-visible InfraRed lasers from damaging the wearer’s eyes. Protects against non-visible IR lasers at 820-1090nm (OD 4) and 1064nm (OD 5), visible violet lasers at 405nm wavelength (OD 5), and visible blue lasers at 445nm wavelength (OD 4). Built from extra-thick, 2.4mm high-impact polycarbonate. ESS Optics feature distortion-free clarity and 100% UVA/UVB protection. Drop-in replacement for ESS Crossbow and Crosshair glasses Warranty: Covered by ESS’s manufacturer warranty. Warranty service is provided by ESS. Made in the USA. ESS Crossbow Overview Sheet Protection Standards (Infrared) IR: Wavelengths 820 – 1090nm @ OD 4 (Infrared) IR: Wavelengths 1064nm @ OD 5 Violet: Wavelengths 405nm @ OD5 Blue: Wavelengths 445nm @ OD 4  VLT Photopic (Day)/ Scotopic (Night) 57%/42%