Currently, LEDs are recognized leaders in the rankings among the other light sources. Such a situation they deserved, mainly because of the high-life, electrical safety and the lack of heating, as well as due to low operating costs, good mechanical strength, lack of infrared and ultraviolet radiation. Thus, luminous efficiency, they have already surpassed incandescent lamps, they have a good future, and they will gain market share as quickly as they would be competitive luminous efficiency and the price is also an important factor is generally accepted. Most likely, the white LEDs will first be used in areas such as lighting, that is where the typical use of inefficient light sources. Along with an increase in the quality of light output LED modules will start to displace from the market of halogen and incandescent sources, and it can happen in the near future. If they have a high luminous efficiency will be achieved, then progress in the scope of the high lamps (fluorescent and metal-), will occur quickly. The commercial sector, which today is mostly used light from fluorescent lamps, is interested in getting less expensive and more durable sources of light, however much this may have an interest and the industrial sector. Since the activities of these sectors is calculated at the prospect, for them important capability to reduce the cost of safety and maintenance, and you should not lose sight of the low energy consumption. Comparing LEDs with fluorescent lighting, do not talk explicitly about the superiority of any version of lighting. At the white LEDs in two times less luminous efficiency compared with fluorescent lamps, as they have significantly more value. LEDs, even with their current shortcomings, can be successfully used today instead of fluorescent lamps, largely due to technical reasons and the conditions of security. It is worth noticing that the cost of using a fluorescent lamp does not stop with its "death". Used lamps (as opposed to elements of the light-emitting diodes), after termination of service without fail should be subjected to mandatory recycling as hazardous because of the content of mercury waste.