The power ratings of the individual LED are only a few watts at present,so LEDs are usually connected in parallel or in series.However this will leads to th
Tunnel lighting design should be energy saving as much as possible in precondition of satisfying the visual requirements,which are highly depended on the li
In this study,the reliability of LED spotlight module with consideration of the contact between a module made of polybutylene terephthalate (PBT) and the al
Nowadays,the LED is usually driven by constant current.However,the forward current,environment temperature and packaging of LED make a great influence on th
The degradation of luminous flux of LEDs is dependent on the type of LED and its operation conditions.That is why a prediction of lifetime often differs fro
The reliability and the life time prediction are still one of the most important issues when we think about LEDs.The examination of these topics represents