LeDiamond (LED package manufacturer) announced that its Tesla filament has successfully completed the requirements of the rigorous 6000 hour lumen maintenance test (LM-80) by Bay Area Compliance Laboratories (BACL). It’s a big breakthrough for LeDiamond on its LED filament development.
The Tesla filament series achieves an efficiency of 180lm/W at 5700K(CRI 70) or 160lm/W at 2700K(CRI 80). Using transparent ceramics as substrates results in good thermal stability and high lumen maintenance. Tesla series are mainly used in candle lamps and bulbs.
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LeDiamond Tesla filament passes BACL LM80 Test. (LeDiamond/LEDinside) |
Tesla 2903 filament(2700K) had been through a 6,000 hours of 50mA experiment from BACL. The test report (see table below) shows the specifications of the data is much higher than indoor residential data by 91.8%, outdoor and commercial data by 94.1%.
Data Set:
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55 ºC, 50mA
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Test Interval and Test Duration:
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0h,1000h,2000h,3000h,4000h,5000h,6000h
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Average. Lumen Maintenance at 6000 hours:
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The 96.94%
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Average Chromaticity Shift at 6000 hours (Δu'v'):
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0.0016
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Calculated TM-21 L70 Lifetime:
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73,000 hours
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Reported TM-21 L70 Lifetime:
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>33,000 hours
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Data Set:
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85 ºC, 50mA
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Test Interval and Test Duration:
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0h,1000h,2000h,3000h,4000h,5000h,6000h
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Average. Lumen Maintenance at 6000 hours:
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The 95.81%
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Average Chromaticity Shift at 6000 hours (Δu'v'):
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0.0019
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Calculated TM-21 L70 Lifetime:
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55,000 hours
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Reported TM-21 L70 Lifetime:
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>33,000 hours
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Data Set:
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105 ºC, 50mA
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Test Interval and Test Duration:
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0h,1000h,2000h,3000h,4000h,5000h,6000h
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Average. Lumen Maintenance at 6000 hours:
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The 95.23%
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Average Chromaticity Shift at 6000 hours (Δu'v'):
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0.0020
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Calculated TM-21 L70 Lifetime:
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50,000 hours
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Reported TM-21 L70 Lifetime:
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>33,000 hours
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The LM80 report from BACL also covers LeDiamond Tesla series 1505 and 0705. The verified report by international organization may gain more confidents from lighting manufactures by using LeDiamond products . For more information, please refer to LeDiamond webiste: http://lediamond-opto.com/site/en/index.html