WANG Ling-yun, WANG Li-hui, SU Shi etc. Solar Spectrum Synthesis Based on LED Peak[J]. Chinese Journal of Luminescence, 2018,39(4): 555-561 DOI: 10.3788/fgxb20183904.0555.
In order to use different band LED for fast and accurate simulation of the solar spectrum
based on the LED spectral synthesis principle
a way to synthesize the solar spectrum by using the data at their peak wavelength of LED spectrum was put forward
the fitting process of solar spectrum was simplified. First
the function equations for all LEDs at their peak wavelength were established
the constraint least-squares method was used to determine the fitting parameters of each band. And then
the method was simulated by three sets of equal spaced LED spectral data sets
the correlation coefficients of the LED synthesis spectra with the target spectra at the interval of 40
30
20 nm were 0.902
0.935
0.977. Finally
The solar spectrum was simulated according to the actual spectrum of the selected LED. The simulation results show that the maximum mismatch error between the synthesized spectrum and the solar spectrum is 4%
achieving the standard of AM1.5 A level and meeting the LED solar simulator spectral matching requirements.
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references
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