Asymmetric alternating prism arrays

Details Asymmetric alternating prism arrays Asymmetric alternating prism arrays

2005-04-05

2005-04-05

Quach-Lee, Y. My (Department: 2875)

Illumination

Light modifier

Refractor

C362S339000, C362S332000

Reexamination Certificate

active

06874913

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.

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Warren, W., “Screen Savers,”LD+A(Lighting Design + Application), pp. 39-41 (Feb. 2000).

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