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  2. Doggles - Wikipedia

    en.wikipedia.org/wiki/Doggles

    Experiments were made with human sunglasses and sports goggles before a pair was developed to fit the shape of a dog's head. [1] They are now produced by the Doggles Company in Diamond Springs, California. [2] Doggles are constructed out of a tinted polycarbonate material for UV protection, with elastic straps to secure them to the dog's head. [3]

  3. Solar viewer - Wikipedia

    en.wikipedia.org/wiki/Solar_viewer

    The solar eclipse of December 26, 2019 seen through a pair of solar eclipse glasses in Jaffna, Sri Lanka. A cat demonstrating a pair of eclipse glasses. Solar viewers (also known as solar viewing glasses or solar eclipse glasses) are special eyewear designed for direct viewing of the Sun. Standard sunglasses are unable to filter out eye ...

  4. Sunglasses - Wikipedia

    en.wikipedia.org/wiki/Sunglasses

    Inuit snow goggles function by reducing exposure to sunlight, not by reducing its intensity. Since the 13th century and until the spread of contemporary UV-shielding spectacles against snowblindness, Inuit made and wore snow goggles of flattened walrus or caribou ivory with narrow slits to look through to block almost all of the harmful reflected rays of the sun.

  5. 15 Chic Dark Sunglasses That Actually Block Out the Sun - AOL

    www.aol.com/entertainment/15-chic-dark...

    And with summer in full force, you’re going to need those glasses to keep the sun out of your eyes. 21 Flattering Sunglasses That Scream 'I Belong to the Country Club' Before you buy your next ...

  6. Photochromic lens - Wikipedia

    en.wikipedia.org/wiki/Photochromic_lens

    In another sort of technology, organic photochromic molecules, when exposed to ultraviolet (UV) rays as in direct sunlight, undergo a structural change that causes them to absorb a significant percentage of the visible light, i.e., they darken. Plastic photochromic lenses use oxazines and naphthopyrans to achieve the reversible darkening effect ...

  7. Anti-reflective coating - Wikipedia

    en.wikipedia.org/wiki/Anti-reflective_coating

    Uncoated glasses lens (top) versus lens with anti-reflective coating. The reflection from the coated lens is tinted because the coating works better at some wavelengths than others. An antireflective , antiglare or anti-reflection ( AR ) coating is a type of optical coating applied to the surface of lenses , other optical elements, and ...

  8. Wood's glass - Wikipedia

    en.wikipedia.org/wiki/Wood's_glass

    It is a very deep violet-blue glass, opaque to all visible light rays except longest red and shortest violet. It is quite transparent in the violet/ultraviolet in a band between 320 and 400 nanometres with a peak at 365 nanometres, and a fairly broad range of infrared and the longest, least visible red wavelengths. [citation needed]

  9. Chicken eyeglasses - Wikipedia

    en.wikipedia.org/wiki/Chicken_eyeglasses

    Elmer Haas of the National Band & Tag Company, a major producer of rose-colored chicken eyeglasses, whose grandfather had devised wireframes for chickens in 1902, [13] indicated that he believed the purported blood-masking effect of the rose coloring was a myth: "the firm added the rose-colored glasses because it indulged the chicken owners ...