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    Retroreflectometer And Method For Measuring Retroreflectivity Of Materials

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    Date
    12/26/2000
    Author
    Roberts, David Wayne
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    Abstract
    A system and method for measuring the retroreflectivity of materials. The system comprises a light source and a first optical pathway along which an illumination light beam travels originating from the light source and ending at a retroreflective surface to be measured. Also, a second optical pathway is provided along which a retroreflected beam travels back from the retroreflective surface to a sensor array. A processor is electrically coupled to the sensor array with an accompanying memory on which is stored operating logic adapted to determine the intensity of a predetermined pattern of the retroreflected beam incident to the sensor array which defines the retroreflected light which propagates from the retroreflective surface at a predetermined observation angle.
    URI
    http://hdl.handle.net/1853/57369
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