High Quality LED Lights

Key elements to distinguish a high quality LED luminaire

In the current market, there are hundreds of thousands of LED lighting options. As there are different prices and qualities in all sectors, how to choose a correct fixture for every occasion and able to distinguish the wheat from the chaff among the multitude of market is no easy task. In this post we are going to detail a little bit what are the key components of a LED luminaire to try to make sure what we really do a good investment in the betting by a LED luminaire.

The 5 key elements of a LED luminaire are basically: Chip, the driver or power supply, motherboard, heat from the fixture management system and finally of the lens. The basis of these elements is essential to ensure our lights:

  • High energy efficiency
  • Long service life
  • High quality of light
  • Instant ignition
  • Absence of flicker

See element-by-element as it affects these characteristics:

The chip

The LED chip is made of a semiconductor material (silicon carbide) about 5 millimeters, able to generate light when applied to it current. The chip is the true heart of a LED luminaire. Different materials, whose mix is what gives the color and quality of light are deposited on their basis. The chip is protected by a layer of polycarbonate.

The chip installed in the fixture is vital for proper operation, since it depends largely on the quality and length of our luminaire.

Driver or power supply

The luminaires based on LED technology as opposed to incandescent technology, are not connected directly to the mains, they require a power source to be able to convert the voltage. This data is what makes LED technology much more effective than the rest because they take advantage of the electric energy thanks to this converter. A power supply is vital to a proper energy efficiency and stability in operation.

The factor which measures the effectiveness of the led luminaire is measured by (PFC) power factor. If the PFC is equal to 1 means that 100% of the energy that reaches the source is used, a value of 0.5 if only half the energy takes advantage

More information about drivers or power supply

Base plate

The Board is responsible for supporting all the connections of the other components of the luminaire, connections such as chip or heat dissipation system. Depending on the type of thermal management used the plate can be made of different components (aluminum or copper) conductors or different layers.

Thermal management

The heat dissipation is perhaps one of the most unknown keys for the functioning and duration of LED luminaires. If LEDs do not emit heat (called cold light), but that does not mean that the luminaire does not generate heat and is precisely that heat management is what influences the duration and operation of the LED lamp. In the case of LEDs, heat (unlike an incandescent bulb) comes out in the direction of the light. For this reason, it is necessary to “extract” that heat, since up to 90% of energy can become lost.

A good heat dissipation will extend the life of the chip. For this purpose the use of materials in accordance with the power and use of the luminaire and a design that favors dissipation of heat is key. The heat can also affect the colour and the quality of the light.

The outer casing is also important in this regard. Is important to be a lightweight material (aluminium or magnesium), and that its design favors dissipation of heat.

More information about the importance of the thermal management of led luminaires

Optics

LED luminaire optics affects significantly on the type of lighting that give the luminaires. The optics of the luminaires is composed of a set of lenses that determine the distribution of the emitted light LED. Lenses may vary in shape and composition depending on the needs of light distribution that requires the luminaire. According to the shape of the lens the beam of light can converge or diverge.

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