Multibeam multi-wavelength internal drum recording apparatus

H - Electricity – 04 – N

Patent

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Details

H04N 1/191 (2006.01) G02B 26/10 (2006.01) H04N 1/06 (2006.01)

Patent

CA 2376143

Internal drum recording apparatus provided with a rotating deflecting element, comprising two (or more) beams of different wavelenghts, which are simultaneously operatable, and optical elements for bringing the two or more beams to a common optical path before they reach the rotating deflecting element. The deflecting element may have dispersing properties such that beams of different wavelengths will leave it at slightly different angles. The beams of different wavelengths may be generated by laser diodes or tunable laser diodes. The apparatus may further comprise a beam combiner to combine the beams generated by the light sources.

L'invention concerne un appareil d'enregistrement à tambour interne pourvu d'un élément déflecteur rotatif, comprenant deux faisceaux (au moins) de longueurs d'ondes différentes, pouvant fonctionner simultanément, ainsi que des éléments optiques permettant de concentrer les deux faisceaux au moins en un chemin optique commun avant que ces derniers n'atteignent l'élément déflecteur. Cet élément déflecteur peut avoir des propriétés de dispersion telles que les faisceaux de longueurs d'ondes différentes quittent ledit élément selon des angles légèrement différents. Les faisceaux de longueurs d'ondes différentes peuvent être générés par des diodes laser ou des diodes laser réglables. L'appareil selon l'invention peut également comprendre un mélangeur de faisceaux servant à combiner les faisceaux générés par les sources lumineuses.

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