Etendue efficient combination of multiple light sources

Details Etendue efficient combination of multiple light sources Etendue efficient combination of multiple light sources

G - Physics

02

B

G02B 27/12 (2006.01) G02B 5/04 (2006.01)

Patent

CA 2594462

A multi-colored illumination system comprising a beam combiner. The beam combiner comprises two triangular prisms and a filter for transmitting a first light and reflecting a second light, each light having a different wavelength. The beam combiner combines the transmitted first light and the reflected light to provide a combined beam. The six surfaces of each of the triangular prism of the beam combiner is polished, thereby combining the lights without increasing etendue of the multi-colored illumination system.

L'invention concerne un système d'illumination multicolore comprenant un mélangeur de faisceaux. Le mélangeur de faisceaux comprend deux prismes triangulaires ainsi qu'un filtre destiné à transmettre une première lumière et à réfléchir une seconde lumière, chaque lumière ayant une longueur d'onde différente. Le mélangeur de faisceaux combine la première lumière transmise et la lumière réfléchie afin de produire un faisceau mélangé. Les six surfaces de chacun du prisme triangulaire et du mélangeur de faisceaux sont polies, mélangeant ainsi les lumières sans augmenter l'étendue du système d'illumination multicolore.

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