LUMINAIRE

摘要

The present invention relates to a luminaire comprising one or more LED light sources (102) arranged within a light chamber that is enclosed by a translucent cover (302), having an inner surface (308), wherein the LED light source (102) is arranged to illuminate the inner surface (308) of the translucent cover (302). The translucent cover (302) comprises a prismatic optical structure (304) on the inner surface (308) for reflecting and/or refracting light from the LED light source (102) omni-directionally. The prismatic optical structure (304) is designed such that a direct view of the LED light source from outside the luminaire is obstructed by means of total internal reflection at the prismatic optical structure.

主权项

1. A luminaire comprising:
a light chamber, a translucent cover enclosing the light chamber, the translucent cover having an inner surface, and a LED light source arranged within the light chamber to illuminate the inner surface of the translucent cover, wherein the translucent cover comprises a material having a first refractive index (n1), and wherein the light chamber comprises a material having a second refractive index (n2), and wherein the translucent cover comprises a prismatic optical structure on the inner surface, the prismatic optical structure having a top angle that is equal to or smaller than 2×[90−arcsin(n2/n1)].