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Varilux. Varilux is a brand name belonging to Essilor International, a producer of corrective lenses. The first version of the lens was invented by Bernard Maitenaz and released in 1959, and was the first modern progressive lens to correct presbyopia. The progressive lens is characterized by correcting near, intermediate and far vision.
Bernard Maitenaz, patented Varilux in 1953, and the product was introduced in 1959 by Société des Lunetiers (now Essilor). The first Varilux lenses' surface structure was however still close to a bifocal lens, with an upper, aberration-free half of the surface for far vision and a rather large "segment" for clear near vision.
Georgia O'Keeffe holds the record for the highest price paid for a painting by a woman. On November 20, 2014 at Sotheby's, the Crystal Bridges Museum of American Art bought her 1932 painting Jimson Weed/White Flower No. 1 for US$44.4 million (equivalent to US$57.2 million in 2023). [14] [15] Among the listed top 89, only six are paintings by ...
After many years as rivals, Essel and Silor merged on 1 January 1972 to form Essilor, then the world's third-largest ophthalmic optical firm. [1] Its first year of existence was marked by the creation of Valoptec, a non-trading company composed of stockholder managers who held half the company's capital stock, and the purchase of Benoist-Bethiot, a French lens manufacturer specializing in ...
28–80mm f/4–5.6. 28–105mm f/3.5–4.5. 35–200mm f/4.5–5.6. 80–200mm f/4.5–5.6. 100–300mm f/4.5–5.6. Later, with the introduction of the Maxxum/Alpha 7 and its support for distance-encoded HS (D) flashes in 2001, Minolta began fitting all lenses with the three additional contacts, repurposed to support the Advance Distance ...
A new supply and demand landscape. Monthly home prices declined the most in San Antonio at 0.3% in April, followed by 0.25% in Austin, and 0.16% in Tampa, according to ICE Mortgage. The cool-downs ...
Bose QuietComfort Wireless Noise Cancelling Headphones. $249 $349 Save $100. Once you invest in first really good pair of noise-canceling headphones, you'll wonder how you ever lived without them ...
Rodenstock Photo Optics traces its origins to a mechanical workshop founded in 1877 by Josef Rodenstock and his brother Michael in Würzburg, Germany. The company relocated to Munich by 1884 and became an important manufacturer of both corrective lenses for glasses and camera lenses by the early 1900s. These two lines began to diverge in the ...
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