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Luminous intensity comparison based on new standard lamps with led reference spectrum

AuthorsGerloff, T.; Schrader, C.; Sperling, A.; Pulli, T.; Dönsberg, T.; Šmid, M.; Kliment, P.; Pons Aglio, Alicia CSIC ORCID; Ferrero, Alejandro CSIC ORCID; Gál, P.; Brida, G.; Blattner, P.; Stuker, F.; Schneider, M.
Issue Date17-Jun-2019
PublisherInternational Commission on Illumination
CitationProceedings of 29th CIE Session 2019: 77-84 (2019)
AbstractPhotometric calibrations are mainly based on the use of incandescent lamps as standards for dissemination and maintenance of the SI units for luminous intensity (cd), luminous flux (lx) and the calibration of luminous responsivity of photometers. Most of the used measurement methods and reference spectra were developed long before modern solid-state lighting (SSL) products were introduced into the lighting market. In addition, phasing-out of incandescent lamps for lighting applications poses a metrological problem: all lamps measured in practice differ completely in their behavior with respect to spectral distribution, flicker and aging. The preferred substitution measurement method is therefore no longer given. The European research project ¿Future photometry based on solid-state lighting products¿ (EMPIR PhotoLED) has investigated the fundamental requirements for photometry based on white light-emitting diode (LED) sources. The project partners have analysed many hundreds of LED spectra and derived suitable LED reference spectra for photometric calibrations. The use of photomers calibrated with the proposed reference spectrum significantly reduces the contributions of spectral errors. In this article we would like to present the practical advantages and disadvantages of using light intensity standards based on real LEDs with very similar spectra to the hypothetical reference spectrum mentioned
DescriptionCIE 2019, Washington DC, June 14 to 22, 2019. -- http://washington2019.cie.co.at
Appears in Collections:(CFMAC-IO) Comunicaciones congresos
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