Opera glasses

Opera glasses
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 5x 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 3x is normally recommended.[citation needed] The design of many modern opera glasses of the ornamental variety is based on the popular lorgnettes of the nineteenth century.

References

Chambers's Encyclopaedia: A Dictionary of Universal Knowledge, Volume 7

The Opticalia Museum Opera Glasses

The Encyclopedia Americana, Volume 11

See also



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  • opera glasses — ► PLURAL NOUN ▪ small binoculars for use at the opera or theatre …   English terms dictionary

  • opera glasses — n. a small binocular telescope used at the opera, in theaters, etc …   English World dictionary

  • opera glasses — opera ,glasses noun plural an object that you look through so you can see the actors on a stage more clearly …   Usage of the words and phrases in modern English

  • opera glasses — noun an optical instrument designed for simultaneous use by both eyes • Syn: ↑binoculars, ↑field glasses • Usage Domain: ↑plural, ↑plural form • Hypernyms: ↑optical instrument …   Useful english dictionary

  • opera glasses — noun (plural) a small pair of special glasses used at the theatre for making things seem closer …   Longman dictionary of contemporary English

  • opera glasses — a small, low power pair of binoculars for use at plays, concerts, and the like. Also, opera glass. [1730 40] * * * …   Universalium

  • opera glasses — plural noun small binoculars for use at the opera or theatre …   English new terms dictionary

  • opera glasses — /ˈɒprə glasəz/ (say opruh glahsuhz) plural noun a small, low power pair of binoculars for use in a theatre, etc. Also, opera glass …  

  • opera glasses — noun One or more pairs of small low powered binoculars for use at a theatrical performance …   Wiktionary

  • opera glasses — special optical instrument through which one is able to see an enlargement of the events on the stage …   English contemporary dictionary

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