1.What’s LED Chips ?
The light producing semiconductor device that may or may not be incorporated into an LED.
2.Why we use the high power LED ?
A high power LED, sometimes referred to as a power LED, is one that is driven at current of 350mA or higher.
3.How to explain “illuminance“?
The intensity of light falling on a surface area. If the area is measured in square feet, the unit of illuminance is footcandles(fc). If measured in square metres, the unit of illuminance is Lux.