G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/00 (2006.01) G02B 6/08 (2006.01) G02F 1/133 (2006.01) G02F 1/1335 (2006.01)
Patent
CA 2175681
An optical element such as used in an array of such elements is configured as a truncated symmetrical solid structure having light input and output surfaces and sides tapering inwardly from the light input surface to the light output surface. The fraction of the input light which is outputted and the angular distribution of the output light vary as a function of said ratio and the tapering angle. Optimal geometries in terms of viewing angle, contrast and THROUGHPUT are for a ratio of the area of the output surface to the area of the input surface ranging between approximately 0.1 and approximately 0.3, and for tapering angles relative to the axis of the structure ranging between approximately 7.5 and approximately 17.5 degrees.
Elément optique constituant d'un réseau d'éléments optiques ayant la configuration d'une structure symétrique solide tronquée présentant des surfaces d'entrée et de sortie de lumière et des côtés coniques vers l'intérieur entre la surface d'entrée de la lumière et sa surface de sortie. La fraction de la lumière entrante qui ressort, et la distribution angulaire de la lumière sortante varient en fonction dudit rapport et de l'angle de conicité. Les géométries optimales quant à l'angle de vision, au contraste et au débit lumineux s'obtiennent pour un rapport entre l'aire de la surface d'entrée et l'aire de la surface de sortie compris entre environ 0,1 et 0,3, et pour un angle de conicité par rapport à l'axe de la structure compris entre environ 7,5 et 17,5 degrés.
Beeson Karl W.
Ferm Paul M.
Konicek Jiri D.
Schweyen John C.
Zimmerman Scott M.
Alliedsignal Inc.
Gowling Lafleur Henderson Llp
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