Increase knowledge! LED chip selection must pay attention to several key parameters

Along with the falling cost and rising of energy efficiency, LED large-scale popularization of era is coming, LED lighting has become the hottest topic door industry, due to the design of the optical, thermal, microelectronics technology, so usually LED designers more focus on appearance, heat dissipation, driver circuit design factors, and neglected the selection problem.

2011 Munich Shanghai international LED electronics innovation on the BBS, philips Lumileds Asia marketing director xue-jun zhou published titled "support in LED lighting application technology development, the theme of the speech, the speech xue-jun zhou combined with philips Lumileds, Shared the view of the key parameter of the LED chip, believe that for most designers are very helpful.

According to zhou xuejun, PhilipsLumileds has shipped more than 1 billion chips and accumulated 15,000 hours of actual test data. In addition, there are 700 million hours of test data accumulation, which are very valuable experience for LED lighting designers.

"As LED energy efficiency continues to improve and costs continue to fall, LED chips have started a price war. At this time, in addition to the cost factor, there are also some other key parameters to consider in the selection process, such as reliability indicators." "Zhou xuejun pointed out.

He believes that the three major indicators of LED reliability should be:

Lumen maintenance rate -- no lumen maintenance rate will lead to different brightness of LED lamps in the same batch, so engineers should learn to look at this indicator curve.

For color stability, he suggested that relevant information could be obtained by referring to the manufacturer's lm-80 report.

Check the reliability of your supplier's supply chain -- if you don't deliver on time, your order will fly!

In addition, he also pointed out that in order to investigate the LED light quality, the three key elements of the light quality are consistency, indifference and color rendering, which are crucial for stable and reliable LED lamps.

Keywords:Lighting

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Increase knowledge! LED chip selection must pay attention to several key parameters

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Increase knowledge! LED chip selection must pay attention to several key parameters