Products, Materials & Tools | Aug 05, 2014

LeDiamond Omni-Directional LED Filament Modules Successfully Passed LM80 Test - Introduces New Versions

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 an international third-party laboratory organization (BACL). It’s a big breakthrough for LeDiamond on its LED filament development.

Features:
•    Omni-directional light source
•    No heat sink required, reduces the heat dissipation cost of lamps
•    Using a non-isolated circuit resolves safety problems
•    The highest lm/W compared to a traditional LED package


LM80 Test Results:

Data Set:

55 ºC, 50mA

Test Interval and Test Duration:

0h,1000h,2000h,3000h,4000h,5000h,6000h

Average. Lumen Maintenance at 6000 hours:

The 96.94%

Average Chromaticity Shift at 6000 hours (Δu'v'):

0.0016

Calculated TM-21 L70 Lifetime:

73,000 hours

Reported TM-21 L70 Lifetime:

>33,000 hours

Data Set:

85 ºC, 50mA

Test Interval and Test Duration:

0h,1000h,2000h,3000h,4000h,5000h,6000h

Average. Lumen Maintenance at 6000 hours:

The 95.81%

Average Chromaticity Shift at 6000 hours (Δu'v'):

0.0019

Calculated TM-21 L70 Lifetime:

55,000 hours

Reported TM-21 L70 Lifetime:

>33,000 hours

Data Set:

105 ºC, 50mA

Test Interval and Test Duration:

0h,1000h,2000h,3000h,4000h,5000h,6000h

Average. Lumen Maintenance at 6000 hours:

The 95.23%

Average Chromaticity Shift at 6000 hours (Δu'v'):

0.0020

Calculated TM-21 L70 Lifetime:

50,000 hours

Reported TM-21 L70 Lifetime:

>33,000 hours

The Tesla filament series achieves an efficiency of 180 lm/W at 5700 K (CRI 70) or 160 lm/W at 2700 K (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.

Tesla 2903 filament(2700 K) had been through a 6,000 hours of 50 mA 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%.

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

About LeDiamond corp:
The company is located in Taipei, Taiwan, and was established in March, 2013 and is committed to develop high-efficiency LED components and light sensor components. LeDiamond R &D team has many years of practical experience in the LED package, also can quickly focus on customer product needs and provides solutions to shorten customer development process to reach a win-win strategy with customers.

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