Light & Engineering 25 (4)

Volume 25
Date of publication 12/20/2017
Pages 115-122

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Effects of LED Lighting on the Luminance Coeffcient. L&E 25 (4) 2017

Articles authors:

Pablo R. Ixtaina, Braian D. Bannert

Pablo R. Ixtaina, Prof., graduated from Universidad Nacional de La Plata Electrical Engineer. At present, he is researcher of the Comisión de Investigaciones CIentíficas (Buenos Aires, Arg.). He has carried out postgraduate studies, improvement work and scientific visits at the National University of Tucumán, La Plata National University, Optical Research Center Ciop, LMT Laboratory (Berlin, Germany), Philips Lighting Application Center (Eindhoven, Holland). He is Director of the Laboratorio de Acústica y Luminotecnia, LAL, Buenos Aires Official Research Centre in Light and Sound. He is member of the “Public Lighting” Commission of the Argentinean National Standards (IRAM). He has about 40 publications in Scientific and Technical Journals, Acts of Congresses and journals of science spreading

Is in staﬀ of the Universidad Nacional de La Plata Engineer in Electronics. He belongs to Comisión de Investigaciones CIentíﬁ cas (Buenos Aires, Arg.) scientiﬁ c staﬀ . He currently participates in studies related to the area of lighting technology

Abstract:

The application of luminance technique in road lighting requires the knowledge of the reflection properties of the road surface. The effect of LEDs radiation spectra on these reflection properties is analyzed in the present paper. On this topic, CIE publication No 30–2 notices that road surfaces are not completely spectrally unselective, nevertheless, the eff ects on reflection of luminous sources spectra used on the road are usually disregarded. A spectral study on samples of Argentinean draining road surfaces is shown in this paper. Size standardized samples were measured under the standard observation angle, for three different light incidence angles. A focused spectrometer was used as detector. A standard high pressure sodium lamp (HPS) and a cool street LED luminaire were used as light sources. A specially built diff use surface was used as reference in order to compare the spectral diff erences in reflection.
As a result, colour selectivity was found. The spectral samples selectivity produced a photopic absorption about 5 to 10 percent greater in HPS lamps spectra than LED sources.

References:

1. Ixtaina, Pablo R; Vidal, Pedro A., Road Surface Lightness and Energy Effciency inroad Lighting, 12th European Lighting Conference “LUX EUROPA 2013, Poland, 2013.
2. Publication CIE N 30–2 (TC-4.6), Calculation and measurement of luminance and illuminance in road lighting. Vienna, 1982.
3. Ixtaina P, Armas A, Bannert B, Use Effects on the Reflection of Macro Textured Surfaces. Journal of Applied Engineering Sciences ISSN: 2247–3769 / e-ISSN: 2284–7197, VOL(6), ISSUE1/2016, pp51–56, May 2016.
4. Instituto Argentino de Racionalizacion de Materiales, IRAM AADL J 2022–2, Alumbrado Publico, Vias de Transito – Clasiffcacion y Niveles de Iluminacion. Buenos Aires, 1995 J.
5. Ekrias A, Ylinen A, Eloholma M, Halonen L, Effects of Pavement Lightness and Colour on Road Lighting Performance.CIE International Symposium on road surface photometric characteristics: Measurement Systems and Results, Italy, 2008.
6. Adrian W., Jobanputra R, Influence of Pavement Reflectance on Lighting for Parking Lots. Portland and Cement Association, PCA R&D Serial No 2458, 2005.
7. Herold, M. Remote Sensing of Impervious Surfaces, Ch. 12 – Spectral Characteristics of Asphalt Road Surfaces, Wageningen University, DOI: 10.1201/ 9781420043754, 2007.
8. International Organization for Standardization ISO, “Guide to the expression of uncertainty in measurements”, Switzerland, 1993. 9. http://www.avantes.com/products/spectrometers/ starline.

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