Groove waveguide with reduced output divergence

Details Groove waveguide with reduced output divergence Groove waveguide with reduced output divergence

G - Physics

02

B

G02B 6/10 (2006.01) F21V 8/00 (2006.01)

Patent

CA 2475013

A waveguide (12) includes a longitudinal structure having a first end opposite a second end. The waveguide further includes a grooved surface (14) formed on the structure adjacent to first end. The geometric size of the longitudinal structure is substantially constant while the grooved surface (14) reshapes a light input ray to decrease the divergence of the ray in the vertical direction and increase the divergence of the ray in the horizontal direction.

Guide (12) d'ondes qui comporte une structure longitudinale possédant une première extrémité située à l'opposé d'une seconde extrémité. Ledit guide d'ondes comporte en outre une surface rainurée (14) formée sur la structure de manière adjacente à la première extrémité. La taille géométrique de la structure longitudinale est pratiquement constante tandis que la surface rainurée (14) modifie un rayon lumineux d'entrée pour réduire la divergence dudit rayon dans la direction verticale et augmenter la divergence de ce rayon dans la direction horizontale.

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