Asymmetric alternating prism arrays
First Claim
1. An optical microstructure comprising a tilted prism array that includes a cross-sectional profile that periodically alternates orientation along a first axis, the prism array including peaks and valleys, substantially all of the peaks being disposed in about a single plane.
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Accused Products
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.
22 Citations
8 Claims
- 1. An optical microstructure comprising a tilted prism array that includes a cross-sectional profile that periodically alternates orientation along a first axis, the prism array including peaks and valleys, substantially all of the peaks being disposed in about a single plane.
Specification