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  2. Anti-scratch coating - Wikipedia

    en.wikipedia.org/wiki/Anti-scratch_coating

    Scratch-resistant coatings are added to glasses due to scratches' extreme ability to impact a wearer's vision. Even when optical glasses are made of high scratch-resistances glass, polycarbonate, or CR-39, coatings are still used. Optical coatings include diamond-like carbon (DLC) and anti-reflective-scratch hybrid coatings. Diamond-like Carbon ...

  3. Surface imperfections (optics) - Wikipedia

    en.wikipedia.org/wiki/Surface_imperfections_(optics)

    This is a very basic surface characterization and is easy to achieve. It describes a scratch whose brightness is less than that of a scratch at visibility grade 80 and a dig with a diameter of up to 0.5 mm (50 hundredths = 50/100=0.5). 60-40 is considered "commercial" quality, while for demanding laser applications 20-10 or even 10-5 are used. [6]

  4. Plastic headlight restoration - Wikipedia

    en.wikipedia.org/wiki/Plastic_headlight_restoration

    Headlight restoration or plastic headlight restoration is the act of restoring aged headlight lenses that have become discolored or dull due the original factory UV protective coating degrading primarily due to UV light and other environmental factors such as road debris impact (stones, sand, etc.) rain, and exposure to caustic chemicals.

  5. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Because polycarbonate is soft and will scratch easily, a scratch-resistant coating is typically applied after shaping and polishing the lens. Standard polycarbonate with an Abbe number of 30 is one of the worst materials optically if chromatic aberration intolerance is of concern.

  6. Foggy lenses? The fix is finally here, and it's just $8 with ...

    www.aol.com/lifestyle/foggy-lenses-fix-finally...

    Safe for all types of glasses, including those with expensive anti-reflective coating, Care Touch Anti-Fog Lens Spray even works on sports googles, camera lenses, and device screens. Keep one ...

  7. Haze (optics) - Wikipedia

    en.wikipedia.org/wiki/Haze_(optics)

    Reflection Haze is an optical phenomenon usually associated with high gloss surfaces, it is a common surface problem that can affect appearance quality. The reflection from an ideal high gloss surface should be clear and radiant, however, due to scattering at imperfections in the surface caused by microscopic structures or textures (≈ 0.01 mm wavelength) the reflection can appear milky or ...

  8. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    Plastic lenses are lighter and shatter-resistant, but are more prone to scratching. Polycarbonate plastic lenses are the lightest, and are also almost shatterproof, making them good for impact protection. CR-39 is the most common plastic lens, due to low weight, high scratch resistance, and low transparency for ultraviolet and infrared radiation.

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