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LIGHT VALVE [1 record]
Record 1 - internal organization data 2007-03-14
Record 1, English
Record 1, Subject field(s)
- Audiovisual Techniques and Equipment
- Video Technology
Record 1, Main entry term, English
- light valve
1, record 1, English, light%20valve
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A video display device in which a powerful light source is modulated by a 'valve' controlled by a much smaller, less powerful one, thus making it possible to project a very large image. 2, record 1, English, - light%20valve
Record number: 1, Textual support number: 1 OBS
The valve is a polarized liquid crystal device in which one surface reflects a powerful light in proportion to the amount of much weaker light falling on the reverse side. The controlling light can be an image created by a CRT [cathode ray tube]. Three valves, red, blue and green, are necessary for color projection. 3, record 1, English, - light%20valve
Record 1, French
Record 1, Domaine(s)
- Audiovisuel (techniques et équipement)
- Vidéotechnique
Record 1, Main entry term, French
- modulateur de lumière
1, record 1, French, modulateur%20de%20lumi%C3%A8re
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Unité d'affichage vidéo intégrant une puissante source lumineuse contrôlée à l'aide d'un modulateur lui-même régulé par un autre modulateur de taille et de puissance plus réduites permettant de projeter une image très large. 2, record 1, French, - modulateur%20de%20lumi%C3%A8re
Record number: 1, Textual support number: 1 OBS
Le modulateur de lumière est un dispositif à cristaux liquides polarisé comportant une surface réfléchissant la lumière suivant une puissance proportionnelle à la quantité de lumière de moindre puissance projetée sur la surface opposée. La lumière de contrôle peut être une image générée par un tube [cathodique]. Trois modulateurs (rouge, bleu et vert) sont nécessaires pour la projection couleur. 2, record 1, French, - modulateur%20de%20lumi%C3%A8re
Record 1, Spanish
Record 1, Textual support, Spanish
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