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The most important parameters from the user point of view is the smallest power consumed by setting compared to standard fixtures. The difference allows for the generation of energy saving.

Another feature which should be characterized by a new LED luminaire is the highest luminous efficacy [lm / W], which will provide enough light when the lamp power [W] to ensure adequate illumination.

An equally important feature is the essence and the natural light to provide comfort and compliance with regulations and Standards or light color CCT [K] and the color rendering index Ra. The above-mentioned three properties can be called colorimetric parameters and electrical systems.

To ensure long-term reliable operation of LED lighting, should be taken into account when designing luminaires and lamps many factors. One of the most important is the LED temperature, which largely determines the life of the lamp L70.

Too high operating temperature of LEDs leads to a quicker loss of brightness, change in color or color rendering index. To ensure optimal operation of LEDs, use heat sinks heat extraction of specific thermal resistance Rth.
A properly designed heat sink provides heat dissipation of the LEDs to the surrounding air temperature Ta, maintaining nominal junction temperature Tj diodes. Heat sink thermal resistance Rth strategic projections may be calculated using the formula This Tj = + (Rth Ptotal *) + (* Rled Pled).

Lumen [lm] - is a measure of the luminous flux in the SI system. Luminous flux determines the amount of light emitted from the light source. Otherwise, it is the total amount of light emitted by a particular light source. The value of the luminous flux for a lamp or lamps can be read from the package or card catalog.

 

Shortcut LED develop is Lighting Emitting Diode - light emitting diode. The LED is a semiconductor element which under the influence of the current flowing therein emits visible or invisible (e.g.,. Infrared).