6533b86dfe1ef96bd12ca796

RESEARCH PRODUCT

Evaluation of retro-reflective coating performance by reflectance and perceived relative brightness measurements

Kaiva LuseVaris KaritansAnete PaususMadara TukisaMaris Ozolins

subject

BrightnessOpticsMaterials scienceCoatingbusiness.industryengineeringObserver (special relativity)engineering.materialbusinessReflectivityRetroreflectorRemote sensing

description

Retro-reflective properties of six types and five different colors or retro-reflective materials were discussed in this paper. Reflectance optical indicatrix of samples was determined and compared to obtained psychophyisical data of perceived brightness of human observer. Microscopic structure of the retro-reflective active regions of RR's was studied. Statistically significant differences in reflectivity and brightness of various types and colors of RR's were found.

https://doi.org/10.1088/1757-899x/23/1/012005