Opera glasses

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Mother of pearl opera glasses and leather case.

Opera glasses, also known as theater binoculars or Galilean binoculars, are compact, low-power optical magnification devices, usually used at performance events, whose name is derived from traditional use at opera performances. Magnification power below 5× is usually desired in these circumstances in order to minimize image shake and maintain a large enough field of view.[citation needed] A magnification of 3× is normally recommended.[citation needed] The design of many modern opera glasses of the ornamental variety is based on the popular lorgnettes of the 19th century. Video streaming on personal tablet computers may be a modern alternative.[1]

The London Opera Glass Company was founded in 1913 and provides opera glasses in many of London's West End theatres.[2][3]

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