Assessment of methods of marking LED sources with the power of equivalent light bulb

Bulletin of the Polish Academy of Sciences. Technical Sciences

P. TabakaCorresponding authorLodz University of Technology, Institute of Electrical Power Engineering, 18/22 Stefanowskiego St., 90-924 Lodz, PolandEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  P. RozgaLodz University of Technology, Institute of Electrical Power Engineering, 18/22 Stefanowskiego St., 90-924 Lodz, PolandOther articles by this author:De Gruyter OnlineGoogle Scholar¹ 

[1] Lodz University of Technology, Institute of Electrical Power Engineering, 18/22 Stefanowskiego St., 90-924 Lodz, Poland

关键词: Keywords: LED;    luminous flux;    declared power;    photometric parameters;   

DOI  :  10.1515/bpasts-2017-0095

学科分类：工程和技术（综合）

来源: Polska Akademia Nauk * Centrum Upowszechniania Nauki / Polish Academy of Sciences, Center for the Advancement of Science

【 摘 要 】

This article presents considerations on the assessment of marking LED sources with the power of an equivalent light bulb. This problem was studied both on the basis of calculations and measurements performed. 17 LEDs of different powers and luminous fluxes were tested. Calculations assessing conformity with the declared power showed that an important disadvantage for most of the LED sources results from the method of marking them with the power of an equivalent light bulb from the point of view of the luminous flux emitted. Manufacturers do not do this correctly, misleading the potential user. Meanwhile, measurements performed in different ambient temperatures indicated that for only 4 from among the 13 LED sources studied the given value of the power of an equivalent light bulb may be recognized as in accordance with the actual state of affairs and still with a reservation that specified ambient temperature shall be required. In other cases the values of power quoted are either understated or overstated.

【 授权许可】

Unknown