Induction lamp vs LED

LED is a compound semiconductor using electroluminescence which is a phenomenon that monochromatic light is emitted when supplying forward voltage to P-N junction as a semiconductor light source that transform electric energy to light energy.
There are GaAs, GaAsP, GaP, CaN as a substance to be a material of LED.

	Incandescent lamp	Halogen lamp	Fluorescent lamp	Metal haloid lamp	LED
Efficiency(lm/W)	10~15	15~20	56	120	80
PF	0.08	0.10	0.7	0.8	0.9 over
Lifesapn(hr)	2,000	4,000	10,000	12,000	50,000
Color rendition	90	80~90	70	75	70
Heat generating temperature(H/S)	100℃ over	100℃ over	80~90℃	300~400℃	45℃
UV rays / Infrared rays	Infrared rays	Infrared rays	UV rays	Infrared rays	None
Mercury content	None	None	25mg	30mg	None
Shock hazard	ELB needed	ELB needed	ELB needed	ELB needed	None(Low power)