Methods to measure the radiant flux of light-emitting diodes

Shulga, A.A.

Full text «Opticheskii Zhurnal»

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Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Шульга А.А. Методы измерения мощности излучения светодиодов // Оптический журнал. 2021. Т. 88. № 7. С. 70–76. http://doi.org/10.17586/1023-5086-2021-88-07-70-76

Shulga A.A. Methods to measure the radiant flux of light-emitting diodes [in Russian] // Opticheskii Zhurnal. 2021. V. 88. № 7. P. 70–76. http://doi.org/10.17586/1023-5086-2021-88-07-70-76

For citation (Journal of Optical Technology):

A. A. Shul’ga, "Methods to measure the radiant flux of light-emitting diodes," Journal of Optical Technology. 88(7), 401-405 (2021). https://doi.org/10.1364/JOT.88.000401

Abstract:

To measure the radiant flux of light-emitting diodes, sphere integration, goniophotometric, and pulsed methods have been considered. A convenient method to calculate the radiant flux using the indicatrix of radiant intensity and an integrating sphere design to measure the total radiant flux of light-emitting diodes with a wide angular distribution of radiation have been proposed. Moreover, the calibration of measurement equipment has been considered. The proposed methods and measurement tools help enable the measurement of the radiant flux of light-emitting diodes in the range of 1 mW to tens of watts. The measurement results are compared using different methods. A method to estimate the absolute measurement error is proposed.

Keywords:

radiant flux, radiant intensity, light-emitting diode, integrating sphere, indicatrix, pulse photometry

OCIS codes: 120.5240, 230.3670, 120.3930, 120.4800, 120.3150

References:

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