PROCEEDINGS OF the 29th Quadrennial Session of the CIE, District-Of-Columbia, Amerika Birleşik Devletleri, 16 - 19 Haziran 2019, cilt.1, ss.1348-1355
The Turkish LED market receives from a significant number of different brands, providing the
end user with similar retrofit lamps easily purchasable from different shopping channels. This
variety in products results in a broad quality spectrum among LED light sources. This study
aims at evaluating off the shelf A19 LED retrofit lamps in the Turkish market as of November
2018 through electrical, photometric, spectral and temporal measurements. In order to do this,
50 different A19 type E27 base LED retrofits have been analysed. The rated values of the LED
retrofits have been compared to the values obtained through measurements and the results
have been analysed according to the relative differences between the rated and measured
results as well as values defined by European standards. The main objective of the study is to
evaluate the properties of LED retrofits consumers frequently buy and utilize in their in terior
lighting environments.