enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Optical manufacturing and testing - Wikipedia

    en.wikipedia.org/wiki/Optical_manufacturing_and...

    This can be done, for example, with ring tools. Next, the lens surface is polished to its final form. Typically this is done by lapping—rotating and rubbing the rough lens surface against a tool with the desired surface shape, with a mixture of abrasives and fluid in between. Typically a carved pitch tool is used to polish the surface of a lens.

  3. United Rentals - Wikipedia

    en.wikipedia.org/wiki/United_Rentals

    United Rentals, Inc. is an American equipment rental company, with about 16 percent of the North American market share as of 2022. [5] It owns the largest rental fleet in the world with approximately 4,700 classes of equipment totaling about $19.3 billion in original equipment cost (OEC) as of 2022. [3]

  4. Hakim Optical - Wikipedia

    en.wikipedia.org/wiki/Hakim_Optical

    On May 1, 2011, Hakim Optical opened its new flagship location at Yonge–Dundas Square in Toronto which is two blocks away from the original 1967 location.. In November 2017, Hakim Optical partnered with virtual reality and augmented reality agency VusionVR Inc. to expand the in-store service by offering an app that would take a customer's selfie and apply a Snapchat-like filter of the ...

  5. Precision glass moulding - Wikipedia

    en.wikipedia.org/wiki/Precision_glass_moulding

    Transition from the optical surface to the lens outside diameter requires a minimum radius value of 0.3 mm. Volume: Volume of the lens (including flanges), V <= 4/3 π r 3 , where r is the smallest local convex radius.

  6. Thorlabs - Wikipedia

    en.wikipedia.org/wiki/Thorlabs

    Thorlabs, Inc. is an American privately held optical equipment company headquartered in Newton, New Jersey. [2] The company was founded in 1989 by Alex Cable, who serves as its current CEO. His daughter, Jennifer Cable, serves as president. [3] As of 2018, Thorlabs has annual sales of approximately $500 million. [4]

  7. Essilor - Wikipedia

    en.wikipedia.org/wiki/Essilor

    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 ...

  8. Optical cage system - Wikipedia

    en.wikipedia.org/wiki/Optical_cage_system

    An optical cage system is an optomechanical system that is used to mount optical elements such as lenses and mirrors together in a rigid assembly. Optical systems built this way can be more compact than can be achieved using an optical table , and the system provides more flexibility than an optical rail .

  9. Tensiometer (surface tension) - Wikipedia

    en.wikipedia.org/wiki/Tensiometer_(surface_tension)

    The Wilhelmy plate tensiometer requires a plate to make contact with the liquid surface. It is widely considered the simplest and most accurate method for surface tension measurement. Due to a large wetted length of the platinum plate, the surface tension reading is typically very stable compared to alternative methods.