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  2. Google Glass - Wikipedia

    en.wikipedia.org/wiki/Google_Glass

    Prism projector, 640×360 pixels (equivalent of a 25 in/64 cm screen from 8 ft/2.4 m away) Sound: Bone conduction transducer: Input: Voice command through microphone, accelerometer, gyroscope, magnetometer, ambient light sensor, proximity sensor: Controller input: Touchpad, MyGlass phone mobile app: Camera: 5 Megapixel photos 720p video ...

  3. Optical glass - Wikipedia

    en.wikipedia.org/wiki/Optical_glass

    Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...

  4. Fresnel lens - Wikipedia

    en.wikipedia.org/wiki/Fresnel_lens

    High-quality glass Fresnel lenses were used in lighthouses, where they were considered state of the art in the late 19th and through the middle of the 20th centuries; most lighthouses have now retired glass Fresnel lenses from service and replaced them with much less expensive and more durable aerobeacons, which themselves often contain plastic ...

  5. Crown glass (optics) - Wikipedia

    en.wikipedia.org/wiki/Crown_glass_(optics)

    BAK-4 barium crown glass (glass code 569560) has a higher index of refraction than BK7, and is used for prisms in high-end binoculars. In that application, it gives better image quality and a round exit pupil. An achromatic doublet, which combines crown glass and flint glass.

  6. 10 Most Expensive Sunglasses in the World and What They Cost

    www.aol.com/10-most-expensive-sunglasses-world...

    Which are the most expensive glasses in the world? The title of most expensive sunglasses in the world goes to the Chopard de Rigo Vision, which are priced at $408,000.

  7. Peli Lens - Wikipedia

    en.wikipedia.org/wiki/Peli_Lens

    The Peli Lens is a mobility aid for people with homonymous hemianopia. It is also known as “EP” or Expansion Prism concept and was developed by Dr. Eli Peli of Schepens Eye Research Institute in 1999. It expands the visual field by 20 degrees.

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