Failure causes and mechanisms of retrofit LED lamps
Long-term stress causes a change in the chromatic properties of retrofit LED lamps. The variation is caused by the phosphors and/or the reflector (CCT modification). The LED driver may degrade, causing a performance reduction or a complete failure. Spectral transmissivity and visual inspection reveal the degradation of the diffuser. Proper thermal management and heat dissipation reduce the degradation rate.
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