Relative Method of Measuring Coefficient of Luminous Intensity of Retro Reflective Devices
American Journal of Modern Physics
Volume 7, Issue 3, May 2018, Pages: 116-120
Received: May 15, 2018;
Accepted: Jun. 5, 2018;
Published: Jul. 7, 2018
Views 220 Downloads 19
Eduard V. Kuvaldin, Metrology Department, S.I. Vavilov State Optical Institute, St. Petersburg, Russia
Follow on us
A relative method is proposed for measuring the coefficient of retro reflective light intensity CRLI through specific coefficient of retro reflective Luminance CRL and area of controlled product. In contrast to the adopted absolute measurement method, by measuring the ratio of light intensity of retro reflective sample to illuminance on it, it is proposed to measure reflectance of retro reflective sample in a small solid angle with calculation CRLI. The proposed method allows using the same testing unit and instruments for measuring CRLI, which are used to measure the CRL road signs and road markings. That permits to significantly reduce measurement error.
Road Warning Triangles, Coefficient of Retro Reflective Light Intensity, Measurements, Reflectance, Testing Unit, Measurements Errors
To cite this article
Eduard V. Kuvaldin,
Relative Method of Measuring Coefficient of Luminous Intensity of Retro Reflective Devices, American Journal of Modern Physics.
Vol. 7, No. 3,
2018, pp. 116-120.
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Kuvaldin E. V. Relative method of measuring the photometric characteristics of road signs and marking / / Measuring technique. 2010. № 4. pp. 64-68.
Russian GOST 7721 - 89 Light sources for measuring color.
Kuvaldin E. V. "Equipment for measuring the coefficient of horizontal road marking" // Roads of Russia in the 21st century, 2005, 2, pp. 73-75.
Kuvaldin E. V. Methods of measuring the coefficient of retro reflectance of road markings and road signs // International conference "Applied optics" St. Petersburg November 2006, Volume 1, page 248-251.
Kuvaldin E. V. Meters of energy and power of optical radiation. // International Conference "Applied Optics" St. Petersburg, November 2006, Volume 1, pp. 217-221.
International Lighting Dictionary // Publisher Russian language, M., 1978, 278 p.
E. V. Kuvaldin: Method of calibrating pulse photometers of energy and power with conversion in time // Journal of Optical Technology, Volume 73. 18, 2006 pp. 42-47.
E. Kuvaldin: Counting Method for Measuring and Linearity Checking Photometry Devices //Measurement science review http://www.measurement.sk/2010/S1/p.html and in: Versita-Central European Science Publisher: http://versita.metapress.com/content/121037/, Volume 10, Number 2 / 2010
Kuvaldin E. V. Optical Energy meters and sources of radiations calibrations in a wide measuring range/ / Measuring technique. 2018. in press.
Catalog of colored glass // Mechanical engineering, M, 1967, 63 p.
E. V. Kuvaldin: Remote and contact devices of plant condition diagnostics / / Journal of optical technology. 2013. No 11. pp. 71-80.
Kuvaldin E. V., Shulga A. A. Pulsed light-emitting diode emitter // Journal of optical technology, 2017. No. 9, pp. 85-89.