Believe that many people have heard of LED lamp, LED eye lamp, LED lamp, LED light bulb and so on. We all know that the pressures of children's learning are high and their homework is more. As a result, children usually spend more than 2-3 hours writing and reading under the lamp every night. Even parents will choose LED eye lamp for their children's visual health. However, many investigations have found that there are many LED eye lamp for children. Parents don't know much about LED, and they don't know what detailed LED is.

One: The concept of LED

What is LED? In fact, the concept of LED is still relatively simple. LED refers to LED = Light Emitting.

Diode (Light Emitting Diode) is a solid-state semiconductor device capable of converting electrical energy into visible light.

LED has many advantages over other traditional light sources, so it is considered as the most potential green light source in the 21st century to replace incandescent lamp and fluorescent lamp.

Second: Advantages of LED

(1) High energy saving

High efficiency and energy saving. DC drive, ultra-low power consumption (single tube 0.03-0.06 W) electro-optic power conversion is close to 100%, the same lighting effect than the traditional light source energy saving more than 80%.

(2) Long life

The life of ordinary lamp tube is about thousands of hours, and the LED light source is called longevity lamp because the LED is a solid cold light source, epoxy resin packaging, strong, non-chaotic, impact-resistant. The service life can reach 60,000 to 100,000 hours, more than 10 times longer than that of traditional light sources.

(3) Rich color

By using the principle of red, green and basket three primary colors, under the control of computer technology, the three colors can form different combinations of light and color, and achieve rich and colorful dynamic change effect and various images.

(4) Strong non-chaos

LED can be up to 100,000 hours, with an initial light loss of 50%.

(5) Environmental protection

LED has better environmental protection benefits. There is no ultraviolet and infrared ray in the spectrum, neither heat nor radiation, and waste can be recycled, no pollution, no mercury element, cold light source, safe touch, belongs to the typical green health lighting source.

(6) Quick reaction

The response time of the incandescent lamp is millisecond, and that of the LED lamp is nanosecond. That's why more and more cars use LED lights as brake lights.

(7) No stroboscopic

At present, the general eye protection lamp strobe in the market is 30,000 to 50,000 times per second, which is very harmful to human body. The biggest difference between LED eye protection lamp and traditional lamp is that LED is powered by DC. If the supply voltage and current are not disordered, and the LED itself is not disorderly in luminescence, the true meaning of stroboscopic free can be achieved.