The influence of different photometric observers on luxmeter accuracy for LEDs and FLs lamps measurements

• Autorzy: Fryc Irena , Tabaka Przemyslaw

Identyfikatory

DOI

10.5277/oa190214

• Języki publikacji: EN

Abstrakty

EN

Age-dependent changes in human eye spectral sensitivity play an important role in contemporary lighting research. Nowadays lighting designing practices take into account the fact that an illuminance level perceived by a given observer depends also on his age. According to recommendations of the International Commission on Illumination CIE presented in the document 227:2017, users age should be taken into account in lighting design of public buildings. The natural consequence of this approach in designing should be the fact that the age of a user also should be considered when verification of lighting installation photometric parameters is performed. According to recommendations of latest CIE documents, verifications of illuminance levels are performed by luxmeters whose spectral sensitivity matches the CIE standard photometric observer V(λ) function. At present there is a lack of papers describing how the accuracy of illuminance measurements could be affected by the fact that with age there are changes in human eye spectral sensitivity and it differs from V(λ) function. To fill this gap we present in this article results showing how applying of different photometric observers influence the luxmeter accuracy. The calculations were performed for LED and FL light sources measured by class B and class C luxmeters. These results indicate that a luxmeter error f1 strongly depends on correlated color temperature of a lamp under measurement and spectral sensitivity of applied photometric observer.

Słowa kluczowe

EN

lighting technology; photometry; illuminance

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2019
• Tom: Vol. 49, nr 2
• Strony: 345--354
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Fryc Irena

• Electrical Engineering Faculty, Bialystok University of Technology, Wiejska 45d, 15-351 Bialystok, Poland

autor

Tabaka Przemyslaw

• Institute of Electrical Power Engineering, Lodz University of Technology, Stefanowskiego 18/22, 90-924 Lodz, Poland

Bibliografia

• [1] EN 12464-1:2012, Lighting of Indoor Work Places.
• [2] EN 1838:2013, Lighting Applications. Emergency Lighting.
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• [4] ISO/CIE 19476:2014, Characterization of the performance of illuminance meters and luminance meters.
• [5] GUILD J., The colorimetric properties of the spectrum, Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 230, 1932, pp. 149–187.
• [6] WRIGHT W.D., A re-determination of the trichromatic coefficients of the spectral colors, Transactions of the Optical Society 30(4), 1928, pp. 141–164.
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• [8] SPERANSKAYA N.I., Determination of spectrum color coordinates for twenty seven normal observers, Optics and Spectroscopy 7, 1959, pp. 424–428.
• [9] CIE 86:1990, 2° Spectral Luminous Efficiency Function for Photopic Vision.
• [10] TULJAPURKAR S., LI N., BOE C., A universal pattern of mortality decline in the G7 countries, Nature 405(6788), 2000, pp. 789–792, DOI: 10.1038/35015561.
• [11] XU J., POKORNY J., SMITH V.C., Optical density of the human lens, Journal of the Optical Society of America A 14(5), 1997, pp. 953–960, DOI: 10.1364/JOSAA.14.000953.
• [12] KRAFT J.M., WERNER J.S., Spectral efficiency across the life span: flicker photometry and brightness matching, Journal of the Optical Society of America A 11(4), 1994, pp. 1213–1221, DOI: 10.1364/JOSAA.11.001213.
• [13] SAGAWA K., TAKAHASHI Y., Spectral luminous efficiency as a function of age, Journal of the Optical Society of America A 18(11), 2001, pp. 2659–2667, DOI: 10.1364/JOSAA.18.002659.
• [14] CIE 227:2017, Lighting for Older People and People with Visual Impairment in Buildings.
• [15] FRYC I., Spectral correction of detector used in illuminance measurements, Proceedings of SPIE 3820, 1999, DOI: 10.1117/12.353083.
• [16] CIE 15:2004, Colorimetry.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).