LED light (Light-Emitting Diode light) is a lighting device that uses LED as a light source. Compared with traditional incandescent and fluorescent lights, LED lights have higher energy efficiency, longer life and a wider range of color options.
The working principle of LED lights is based on the light-emitting principle of LED. LED is a semiconductor device. When current passes through the LED, electrons and holes in the semiconductor material recombine, thereby releasing energy and emitting it in the form of light. LED lights produce sufficient brightness and lighting effects by integrating multiple LED chips into a LED bulb, LED tube, LED panel and so on.

LED characteristics

  1. Energy saving is the most prominent feature of LED lights
    In terms of energy consumption, the energy consumption of LED lights is one-tenth that of incandescent lamps and one-fourth that of energy-saving lights. LED lights have high photoelectric conversion efficiency, which can convert more electrical energy into light energy and reduce energy waste. This is one of the biggest features of LED lights. Nowadays, people advocate energy saving and environmental protection. It is precisely because of this feature of energy saving that LED lights have a wide range of applications, making LED lights very popular.
  2. LED lights can work in high-speed switching state
    When we usually walk on the road, we will find that every LED screen or picture is unpredictable. This shows that LED lights can perform high-speed switching work. However, the incandescent lights we usually use cannot achieve such a working state. In daily life, if the number of switches is too many, it will directly cause the filament of the incandescent light to break. This is also an important reason why LED lights are popular.
  3. Environmental protection
    LED lights do not contain any heavy metal materials such as mercury, but fluorescent lights do, which reflects the environmental protection characteristics of LED lights. People nowadays attach great importance to environmental protection, so more people will be willing to choose environmentally friendly LED lights.
  4. Fast response speed
    Another outstanding feature of LED lights is that they respond quickly. The LED lights can light up instantly without preheating time, providing instant brightness. Compared with the energy-saving lights we usually use, their response speed is faster. When turning on traditional light bulbs, it often takes a long time to illuminate the room. The light bulbs must be completely heated before they can light up.

LED performance parameters

  1. Luminous efficacy and luminous flux
    Luminous efficacy is the ratio of luminous flux to electrical power, and the unit is generally lm/W. Luminous efficacy represents the energy-saving characteristics of a light source, which is an important indicator for measuring the performance of modern light sources. Luminous efficacy is a parameter of a light source, which is the ratio of luminous flux to power. Depending on the situation, this power can refer to the radiant flux output by the light source, or the energy that provides the light source (can be electrical energy, chemical energy, etc.). The power in luminous efficacy usually depends on the situation, but in many cases it is unclear.
    Luminous flux refers to the radiation power that can be felt by the human eye, which is equal to the product of the radiation energy of a certain waveband per unit time and the relative visibility of the waveband. Since the human eye has different relative visibility of light of different wavelengths, when the radiation power of light of different wavelengths is equal, the luminous fluxes are not equal.
  2. Luminous intensity and light intensity distribution
    The luminous intensity of an LED represents its luminous intensity in a certain direction. Since the light intensity of the LED varies greatly at different spatial angles, we subsequently studied the light intensity distribution characteristics of the LED. This parameter is of great practical significance and directly affects the minimum viewing angle of the LED display device.
    What is easily confused is that in optics, light intensity often refers to the radiation power per unit area. Since the human eye has different relative visibility of light of different wavelengths, when the radiation power of light of different wavelengths is equal, the luminous flux is not equal.
  3. Wavelength
    Regarding the spectral characteristics of LED, we mainly look at whether its monochromaticity is excellent, and we should also pay attention to whether the main colors of red, yellow, blue, green, and white LEDs are pure. Because in many situations, such as traffic lights, the color requirements are relatively strict.

Due to the many advantages of LED lights, they are widely used in the lighting field. LED lights can be used in various fields such as home lighting, commercial lighting, landscape lighting, vehicle lighting, etc. With the advancement of technology, the brightness, effectiveness and reliability of LED lights continue to improve, gradually replacing traditional lighting sources.


Mondial is a professional lighting company that has been established for more than ten years and has a very professional sales and technical team.If you have more questions about LED drivers that you would like to discuss, please contact us. Looking forward to communicating with you.

Similar Posts