Abstract
Describes the modern problems in the measurements of the luminous flux of LED lamps associated with their emission spectra, and describes the state primary standard of luminous flux, methods of reproducing the unit of luminous flux and transferring it to the working light sources. The results of theoretical and experimental studies of nodes in the reference standard trap- detector with a correcting filter, spherical photometer and the whole plant. Presented the uncertainty budget of measurements of the luminous flux of light sources. Considered its opportunities and prospects for measurement assurance in the field of LED lighting sources in Ukraine
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