High reflectance light guide

Details High reflectance light guide High reflectance light guide

1988-08-22

1990-01-23

Sikes, William L.

350 9633, G02B 600, G02B 614

Patent

active

048954209

ABSTRACT:
A high reflectance light guide may be inexpensively made by rolling a thin transparent plastic film to form a tube. The tube is formed with multiple layers of the plastic material, and air entrained between the layers of plastic. When the plastic material and the separating layers of air have thicknesses that are approximately equal, there is a high degree of reflectance at the plastic and air interface. Light can then be directed along the interior of the tube with little light loss. Light may then be efficiently distributed over an extended distance with little material cost.

REFERENCES:
patent: 3641332 (1972-02-01), Reick et al.
patent: 3901674 (1975-08-01), Strack et al.
patent: 4149772 (1979-04-01), Iyengar et al.
patent: 4265515 (1981-05-01), Kao
patent: 4372648 (1983-02-01), Black

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