Regarding lighting optics, energy efficiency, performance, etc., our company can handle DLC, LM-80, ERP, IEC 62612, IEC62722-2-1, IEC60969, IEC62717, TM-21, LM-79, IES testing, integrating sphere testing, flashing Frequency test, start-up time test, Energy Star, EN 62471, EN62778, LM-82, LM84, DOE, CEC, SASO 2870, etc., the test items are complete.
TM21 test is mainly to predict the life of LED light sources, and use the data of LM-80 to estimate the long-term life performance of LED components and lamps/bulbs.
TM21 provides processing methods for the data measured by LM80, mainly including the following:
A. The data fitting method in the form of exponential function is given.
B. The correction method of fitting life (70% light decay life) is given.
C. A detailed expression method of life is given.
D, the interpolation method for calculating the lifetime at a given point temperature is given.
Note: Before the TM21 calculation, the LM80 report of the lamp bead must be prepared, and then the whole lamp can be subjected to the ISTMT temperature rise test before the calculation can be carried out.
The steps to use TM-21 to estimate the life of LED lamps
Step 1: The LED component supplier conducts an LM-80 experiment at 3 temperatures (55/85/optional temperature) for at least 6,000 hours on its LED Source (Package/Array/Module).
Step 2: Estimate the long-term life data of 3 test temperatures (55/85/optional temperature) according to the TM-21-11 formula.
Step 3: Obtain the In Situ Temperature of the LED lamp bead placed in the LED lamp. Refer to the ISTMT (In Situ Temperature Measurement Test) test program to obtain the temperature of the LED lamp bead in the LED lamp. The test temperature position must be the same as the Ts setting position of LM-80-15. The temperature measurement point position is called TMPLED (LED Temperature Measurement Point).
Step 4: Interpolate the calculated TMPLED and TM-21 calculation results to obtain the estimated lifetime value of the TMPLED.
TM21 test is mainly to predict the life of LED light sources, and use the data of LM-80 to estimate the long-term life performance of LED components and lamps/bulbs.
TM21 provides processing methods for the data measured by LM80, mainly including the following:
A. The data fitting method in the form of exponential function is given.
B. The correction method of fitting life (70% light decay life) is given.
C. A detailed expression method of life is given.
D, the interpolation method for calculating the lifetime at a given point temperature is given.
Note: Before the TM21 calculation, the LM80 report of the lamp bead must be prepared, and then the whole lamp can be subjected to the ISTMT temperature rise test before the calculation can be carried out.
The steps to use TM-21 to estimate the life of LED lamps
Step 1: The LED component supplier conducts an LM-80 experiment at 3 temperatures (55/85/optional temperature) for at least 6,000 hours on its LED Source (Package/Array/Module).
Step 2: Estimate the long-term life data of 3 test temperatures (55/85/optional temperature) according to the TM-21-11 formula.
Step 3: Obtain the In Situ Temperature of the LED lamp bead placed in the LED lamp. Refer to the ISTMT (In Situ Temperature Measurement Test) test program to obtain the temperature of the LED lamp bead in the LED lamp. The test temperature position must be the same as the Ts setting position of LM-80-15. The temperature measurement point position is called TMPLED (LED Temperature Measurement Point).
Step 4: Interpolate the calculated TMPLED and TM-21 calculation results to obtain the estimated lifetime value of the TMPLED.