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Things you should know about LED light source

2021-07-09 17:14:48

Things you should know about LED light source 1

 

Solar LED light source 
1. What is LED?
LED is taken from the abbreviation of the three words Light Emitting Diode. As the name suggests, a light emitting diode is an electronic device that can convert electrical energy into light energy and has the characteristics of a diode.

2. The working principle of light-emitting diodes
LED emits spontaneous radiation (incoherent light). Most of them use a double heterojunction structure, sandwiching the active layer between the P-type and N-type confinement layers, but there is no optical resonant cavity, so there is no threshold. LEDs are divided into front-emitting type and side-emitting type. The side-emitting type LED has a large driving current and low output optical power, but the beam emission angle is small, and the coupling efficiency with the optical fiber is high, so the fiber input light power is higher than the front-emitting type LED .

3. Features of LED light source
Voltage: LED uses a low-voltage power supply, and the voltage of a single LED is between 1.9~4V, which is a safer power supply than using a high-voltage power supply.
Efficiency: High luminous efficiency, the highest luminous efficiency in the laboratory has reached 208lm/w (cree), which is currently the highest luminous efficiency lighting product.
Shock resistance: LED is a solid-state light source. Due to its particularity, it has shock resistance that other light source products cannot match.
Stability: 100,000 hours, the light decay is 70% of the initial
Response time: The response time of LED lights is in the order of nanoseconds, which is the product with the fastest response time among all light sources at present.
Environmental protection: no harmful substances such as metal mercury
Color: The band of LED is quite narrow, the emitted color is pure, there is no stray light, it covers all the bands of visible light, and can be combined into any desired visible light by R/G/B.

Rich LED colors
Because the LED bandwidth is relatively narrow and the color purity is high, the color of the LED is much richer than that of other light sources.

 

Things you should know about LED light source 2


According to calculations by relevant experts, the color of LED is 30% richer than other light sources, so it can more accurately reflect the authenticity of objects, and of course, it is more favored by consumers!

 

Advantages of LED light source
1. Small size
LED is basically a small chip encapsulated in epoxy resin, so it is very small and very light.

2. Low power consumption
LED power consumption is quite low, DC drive, ultra-low power consumption (single tube 0.03 ~ 0.06 watts), electro-optical power conversion is close to 30%. Generally speaking, the working voltage of LED is 2~3.6V, and the working current is 0.02~0.03A; that is to say, it consumes no more than 0.1W, and the same lighting effect is nearly 80% energy-saving than traditional light sources.

3. Long service life
Some people call the LED light source a longevity lamp. It is a solid cold light source, encapsulated by epoxy resin, and does not have the shortcomings of filament light and easy burning and thermal deposition. Under the appropriate current and voltage, the service life can reach 60,000 to 100,000 hours, which is more than 10 times longer than that of traditional light sources.

 

Things you should know about LED light source 3


4. Changeable
The LED light source can use the principle of the three primary colors of red, green and blue. Under the control of computer technology, the three colors can have 256 gray levels and can be matched arbitrarily to produce 256 × 256 × 256 = 16777216 colors, forming a variety of combinations of different light colors. Achieve a variety of dynamic effects and various images.

5. Advanced technology
Compared with the monotonous luminous effect of traditional light sources, LED light sources are low-voltage microelectronic products. It successfully integrates computer technology, network communication technology, image processing technology and embedded control technology, etc., so it is also a digital information product, a "high-tech tip" technology of semiconductor optoelectronic devices, with online changes that can be infinitely upgraded and flexible.

6. Comprehensive
Long life-life can exceed 100,000 hours, compared to the life of a tungsten bulb is only 1,000 hours, stable-no moving parts, no glass, size-most of the diameter is only 5 mm, energy consumption-up to 90% The conversion rate converts electrical energy into light energy, requires very little power supply, is environmentally friendly and non-toxic-no mercury and other toxic heavy metals, versatility-can achieve various color changes, low temperature-more than HID or incandescent lamps Less heat radiation, low DC voltage-safer in certain application scenarios.

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