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  2. Cohen's Fashion Optical - Wikipedia

    en.wikipedia.org/wiki/Cohen's_Fashion_Optical

    Cohen's Fashion Optical was the first to offer on-premise eye examinations with qualified Doctors of Optometry. [citation needed] On March 3, 2008, Houchens Industries completed its acquisition of Cohen's with hopes of expanding the regional optical retail chain into a national chain. The current president, Robert Cohen remained as president of ...

  3. craigslist - Wikipedia

    en.wikipedia.org/wiki/Craigslist

    Craigslist headquarters in the Inner Sunset District of San Francisco prior to 2010. The site serves more than 20 billion [17] page views per month, putting it in 72nd place overall among websites worldwide and 11th place overall among websites in the United States (per Alexa.com on June 28, 2016), with more than 49.4 million unique monthly visitors in the United States alone (per Compete.com ...

  4. Pearle Vision - Wikipedia

    en.wikipedia.org/wiki/Pearle_Vision

    It is one of the largest franchised optical retailers in North America. The company was acquired by Luxottica (which has since merged with Essilor to form EssilorLuxottica), [2] an Italian eyewear company, in 2004. As of December 31, 2018, Pearle Vision operated 110 corporate stores and had 419 franchises throughout North America. [3]

  5. Panavision - Wikipedia

    en.wikipedia.org/wiki/Panavision

    Panavision Inc. is an American motion picture equipment company founded in 1954 specializing in cameras and lenses, based in Woodland Hills, California.Formed by Robert Gottschalk as a small partnership to create anamorphic projection lenses during the widescreen boom in the 1950s, Panavision expanded its product lines to meet the demands of modern filmmakers.

  6. Astigmatism (optical systems) - Wikipedia

    en.wikipedia.org/wiki/Astigmatism_(optical_systems)

    In 3D PALM/STORM, a type of optical super-resolution microscopy, a cylindrical lens can be introduced into the imaging system to create astigmatism, which allows measurement of the Z position of a diffraction-limited light source. [24] Laser line levels use a cylindrical lens to spread a laser beam from a point into a line.

  7. Corrective lens - Wikipedia

    en.wikipedia.org/wiki/Corrective_lens

    Plastic lenses are currently the most commonly prescribed lens, owing to their relative safety, low cost, ease of production, and high optical quality. The main drawbacks of many types of plastic lenses are the ease by which a lens can be scratched, and the limitations and costs of producing higher-index lenses.

  8. Carl Zeiss AG - Wikipedia

    en.wikipedia.org/wiki/Carl_Zeiss_AG

    First workshop of Carl Zeiss in the center of Jena, c. 1847 Carl Zeiss Jena (1910) One of the Stasi's cameras with the special SO-3.5.1 (5/17mm) lens developed by Carl Zeiss, a so-called "needle eye lens", for shooting through keyholes or holes down to 1 mm in diameter 2 historical lenses of Carl Zeiss, Nr. 145077 and Nr. 145078, Tessar 1:4,5 F=5,5cm DRP 142294 (produced before 1910) Carl ...

  9. Automated optical inspection - Wikipedia

    en.wikipedia.org/wiki/Automated_optical_inspection

    Automated optical inspection (AOI) is an automated visual inspection of printed circuit board (PCB) (or LCD, transistor) manufacture where a camera autonomously scans the device under test for both catastrophic failure (e.g. missing component) and quality defects (e.g. fillet size or shape or component skew). It is commonly used in the ...