Asymmetric alternating prism arrays
AssigneeReflexite Corporation
InventorsJames F. Munro, John A. Futhey
Life of this patent
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Abstract
A luminaire is provided which includes a light source, a light guide that receives light radiating from the light source, and a plurality of prisms adjacent the light guide that redirect the light from the light guide substantially perpendicular to a longitudinal axis of the light guide. The prism angles, in one embodiment, are 25°-90°-65°. The fine pitch prism arrays preferably alternate or flip-flop every few millimeters, for example, one to two millimeters to create the visual appearance of bright and dark bands which cause the structure to appear like macro prisms.
Claims34
A luminaire, comprising:
- a light source;
- a light guide that receives light radiating from the light source;
- and
- a plurality of tilted prism arrays for redirecting the light in a first direction, wherein the plurality of prism arrays periodically alternate orientation along the light guide.
An optical microstructure comprising a plurality of tilted prism arrays that periodically alternate orientation of the tilted prism arrays along a first axis.
A luminaire comprising:
- a light source;
- a light guide that receives light radiating from the light source;
- and
- a plurality of tilted prism arrays for redirecting the light exiting the light guide, the prism arrays periodically alternating orientation along a first axis.
A method for redirecting light comprising:
- providing a light source;
- receiving light radiating from the light source in a light guide;
- and
- redirecting the light in a first direction with a plurality of tilted prism arrays that periodically alternate orientation along a first axis.
Dependencies are inferred from the claim text.