Conspicuity marking system including light guide and retroreflec

Details Conspicuity marking system including light guide and retroreflec Conspicuity marking system including light guide and retroreflec

1996-01-24

1999-05-18

Ullah, Akm E.

Optical waveguides

With optical coupler

Input/output coupler

385147, 362 32, G02B6/26

Patent

active

059058269

ABSTRACT:
A conspicuity marking system includes a light guide which has at least one optically reflective surface for propagating light through the light guide and a retroreflective light extractor for extracting light propagating through the light guide and for retroreflecting light from an external light source incident upon the system. Light propagating through the light guide which is transmitted into the light extractor is reflected back through the light guide such that it exits the light guide at a location displaced from the retroreflective light extractor. Light from an external light source which is incident on the system passes through the light guide and is retroreflected toward the light source by the retroreflective light extractor.

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