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Aviator style sunglasses are intended to be worn under headgear and are characterised by dark, oftentimes reflective lenses and thin monel, steel or titanium metal frames with double or triple bridges and bayonet earpieces or flexible cable temples that hook more securely behind the ears. [1]
From the late 19th century, short references of sunglasses have been found in reports, such as one from 1866 by Walter Alden, who wrote of soldiers using, during the American Civil War (1861-1865), "shell spectacles" ("verres de cocquille") to protect against sunlight on long marches, or by the British T. Longmore reporting in The Optical ...
The American Optical Company, also known as AO Eyewear, is a luxury American eyewear and sunglass company based in Vernon Hills, Illinois near Chicago. AO designs and ...
The Musée de la Lunette [1] is a museum of eyeglasses located in Morez (Jura - Franche-Comté), France. [2] It was formerly located in Paris, with the name Musée Pierre Marly - Lunettes et Lorgnettes. [3] The museum was created by Pierre Marly, optician to crowned heads, public figures and celebrities.
The optical center of a spherical lens is a point such that if a ray passes through it, the ray's path after leaving the lens will be parallel to its path before it entered. In the figure at right, [ 8 ] the points A and B are where parallel lines of radii of curvature R 1 and R 2 meet the lens surfaces.
Luxottica is the largest optical retailer in the United States, with 7.3% of US retail sales in 2015. [45] With its merger with Essilor in 2018 the company owns Coastal/Clearly, an online contacts and glasses retail giant bought in 2014 that ships to over 200 countries beside its original North American market.