Single light source additive lamphouse with digital light...

G - Physics – 02 – B

Patent

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Details

G02B 27/00 (2006.01) H04N 3/36 (2006.01) H04N 3/40 (2006.01) H04N 5/253 (2006.01) H04N 9/11 (2006.01) H04N 9/79 (2006.01)

Patent

CA 2233754

A lamphouse for a telecine allows the spectral composition of its output to be controlled electronically. A light beam is bounced off mirrors to reduce its infrared content, then passes through three beam splitters which split off the red, green, and blue content. The red, green, and blue beams pass through electronic shutters and are then reflected off dichroic mirrors to become a single beam again. The spectral content of the single beam is controllable by turning the electronic shutters corresponding to the red, green, and blue beams on and off.

La présente invention a pour objet une boîte à lumière pour télécinéma permettant de contrôler électroniquement la composition spectrale de sortie. Un faisceau de lumière est renvoyé par un jeu de miroirs aux fins de réduction du contenu infrarouge avant séparation des couleurs rouge, bleu et vert à travers un réseau de trois séparateurs de faisceau. Les faisceaux rouge, vert et bleu passent à travers des obturateurs électroniques et sont ensuite réfléchis par des miroirs dichroïques pour reconstitution d'un faisceau unique. La composition spectrale du faisceau unique peut être contrôlée par la mise hors circuit des obturateurs électroniques correspondant aux faisceaux rouge, vert ou bleu.

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