RETROREFLECTORS

Measurement and characterization of angular reflectance for cube-corners and microspheres

[+] Author Affiliations
George H. Seward, Pamela S. Cort

Innovative Imaging Systems Inc., 19 Sterling Road, North Billerica, Massachusetts?01862

Opt. Eng. 38(1), 164-169 (Jan 01, 1999). doi:10.1117/1.602077
History: Received Apr. 24, 1998; Revised Aug. 20, 1998; Accepted Aug. 25, 1998
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Abstract

Angular-reflectance measurements were performed on several retroreflectors: metal-backed solid cube-corner arrays, metal-backed microspheres, and bare microspheres. Their peak values were 140% msr−1,30% msr−1, and 2.0% msr−1, respectively. An instrument for measurement of angular reflectance is described. Methods for characterization of retroreflectors are developed for the purpose of predicting radiance and image contrast. Issues related to the minimum and maximum range of detection are discussed. Angular reflectance characteristics of cube-corners and microspheres are measured and discussed. © 1999 Society of Photo-Optical Instrumentation Engineers.

© 1999 Society of Photo-Optical Instrumentation Engineers

Topics

Reflectivity

Citation

George H. Seward and Pamela S. Cort
"Measurement and characterization of angular reflectance for cube-corners and microspheres", Opt. Eng. 38(1), 164-169 (Jan 01, 1999). ; http://dx.doi.org/10.1117/1.602077


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