projector


projector
/preuh jek"teuhr/, n.
1. an apparatus for throwing an image on a screen, as a motion-picture projector or magic lantern.
2. a device for projecting a beam of light.
3. a person who forms projects or plans; schemer.
[1590-1600; PROJECT + -OR2]

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▪ photographic device
      device for transferring photographic and other images in an enlarged form onto a viewing screen. All types of projectors employ a light source and a lens system. A simple still-photo or slide projector for exhibiting transparencies has two sets of lenses, one between the light source and the transparency, to concentrate the light, and one in front of the transparency, to focus the picture on the screen and enlarge the image. Another type of still projector has the light source positioned in front of the picture so that the image is formed by light reflected from the picture; this produces a dimmer image but is necessary for the exhibition of opaque pictures—i.e., printed photographs and illustrations from books and magazines.

 A motion-picture projector is a more complex device, though it still employs the basic combination of light source and lens systems. A shutter operates to flash each successive frame on the screen (usually at a rate of about 16 per second), while electrically driven reels pass the sprocket-wound film through the lens system. To effect reel changes smoothly in public movie houses, two synchronized projectors are used, one beginning a new reel as the other completes an old one.
 

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Universalium. 2010.

Synonyms:

Look at other dictionaries:

  • Projector — Pro*ject or, n. [Cf. F. projeteur.] 1. One who projects a scheme or design; hence, one who forms fanciful or chimerical schemes. L Estrange. [1913 Webster] 2. an optical instrument which projects an image from a transparency or an opaque image… …   The Collaborative International Dictionary of English

  • Projector — may refer to:* Video projector, a device that projects a video signal from computer, home theater system etc. * Movie projector, a device that projects moving pictures from a filmstrip * Slide projector, a device that projects a still image with… …   Wikipedia

  • Projector — Студийный альбом Dark Tranquillity Дата выпуска 21 Июня 1999 Записан Сентябрь …   Википедия

  • projector — pro‧jec‧tor [prəˈdʒektə $ ər] noun [countable] a piece of equipment that makes a film or picture appear on a screen or flat surface ˌoverhead proˈjector abbreviation OHP a piece of electrical equipment used when giving a talk, which shows words… …   Financial and business terms

  • Projector — Studioalbum von Dark Tranquillity Veröffentlichung 10. August 1999 Label Century Media …   Deutsch Wikipedia

  • Projector — Album par Dark Tranquility Sortie 21 Juin 1999 Enregistrement Septembre 1998 Durée 54:23 Genre Death metal atmosphérique Producteur Fredrik …   Wikipédia en Français

  • projector — index architect Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • projector — projectór, projectóri, s.m. (înv.) persoană care proiectează sau prospectează ceva. Trimis de blaurb, 01.11.2006. Sursa: DAR …   Dicționar Român

  • projector — (n.) 1590s, one who forms a project, agent noun in Latin form from PROJECT (Cf. project) (v.). In the optical, camera sense it is from 1884 …   Etymology dictionary

  • projector — |ètô| s. m. Aparelho destinado a projetar luz a distância.   ‣ Etimologia: francês projecteur   ♦ [Portugal] Grafia de projetor antes do Acordo Ortográfico de 1990.   ♦ Grafia no Brasil: projetor …   Dicionário da Língua Portuguesa

  • projector — ► NOUN ▪ an apparatus for projecting slides or film on to a screen …   English terms dictionary


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