Challenges still existed in using LED

LED light bulbs will soon be adopted in household lighting and industrial lighting because of its characters of energy efficient and environmental protection. But challenges still existed in using LED. 

LEDsin different colors-Light Emitting Diode

LEDs are currently an initial capital cost compare with other conventional lighting technologies. For example, a single AC bulb replacing a 25 watt incandescent bulb, will cost about $40. We would have replaced all the conventional bulbs with LEDs if the initial capital cost reduced, isn’t it?

LED performance largely depends on correctly engineering the fixture to manage the heat generated by the LED, which causes deterioration of the LED chip itself. Over-driving the LED or not engineering the product to manage heat in high ambient temperatures may result in overheating of the LED package, eventually leading to device failure. Adequate heat-sinking is required to maintain long life. The most common design of a heat sink is a metal device with many fins, which conducts the heat away from the LED. 

Current LED technology has its limitations. LEDs utilize expensive sapphire-based technology in their construction. This is perhaps the largest contributing factor in high production costs.

LEDs that are poorly designed or poorly manufactured tend to flicker, dim, shift in color, draw power even when they are turned “off” or provide uneven lighting within a year of regular use. LEDs are rated to last for several years before they need servicing or replacing which is why consumers should be weary of LEDs that operate improperly within their first year of use.

LEDs are very small, typically less than .25-inch in diameter. Such small lights have their limitations, LEDs are often grouped together in clusters to broaden their applications. One single LED does not produce much visible light which is why they are offered in clusters for everyday home-use. Some clusters feature diffusers which helps disperse light from the LEDs more evenly.