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NIR Lens Technology is a polarized diffuse reflector that reduces internal reflections within the lens allowing for noticeably sharper clarity. The diffuse reflecting technology is enclosed within the lens to protect it from scratching or exposure to harmful environmental conditions. NIR lenses have oleophobic coatings on the front and back surfaces to resist oil and moisture and to make cleaning easier. NIR lenses are made of CR-39™; they block 100% of harmful UV light and meet the optical and impact resistance requirements of ANSI Z80.3.