The inherent characteristics of the LED it is the ideal light source to replace the traditional light source, it has a wide range of uses.
Small size

LED is basically a small chip is encapsulated in epoxy resin inside, so it's very small, very light.
Low power consumption
LED power consumption is very low, in general, LED's operating voltage is 2-3.6V. The operating current is 0.02-0.03A. That is to say: the power consumption is not more than 0.1W.
Long service life

Proper current and voltage, LED life of up to 100,000 hours.
High-brightness, low-calorie
Less heat radiation than HID or incandescent.
Environmental protection
LED is made from non-toxic materials, unlike fluorescent lamps containing mercury can cause pollution, while LED can also be recycled. Red LED contains a lot of As (arsenic), virulent
Durable
LED is completely encapsulated in epoxy resin inside than light bulbs and fluorescent tubes are sturdy. Light body and no loose parts, these features make the LED can be said that is not easily damaged.
Controllability
Can achieve a variety of color changes.
the characteristics of the LED light source
1, Voltage: led using the low-voltage power supply voltage 6-24v between, depending on the product, so it is a more secure power supply to the high voltage power supply, especially for public places.
Performance: energy consumption is reduced by 80% compared with the same light efficiency of incandescent
Applicability: small, a small piece of each unit LED is 3-5mm square, so the device can be prepared into a variety of shapes, and suitable for the environment variable
Stability: 100,000 hours, the light fades for 50% of the initial
5 Response time: the incandescent millisecond response time, led lights nanosecond response time
Environmental pollution: no harmful metal mercury
7 Color: change the current can change color easily light-emitting diodes by chemical modification method, adjust the material's band structure and band gap, to achieve color light orange red Huanglv Lan. Small current when the red LED, as the current increases, you can turn to orange, yellow, and finally for the green
8, Price: led price is more expensive compared to incandescent lamps, a few led the price with the price of an incandescent quite often each signal to diodes from 300 to 500
 
LED classification
1, luminous color light-emitting tube
Luminous tube lighting color points, can be divided into red, orange, green (also broken down yellow-green, standard green and pure green), Blu-ray. Further, some light emitting diodes contained in two or three color chips.
According to the light emitting diode a light at the doped or not doped scattering agent, a colored or colorless, the various colors of the light emitting diode can also be divided into a colored transparent, colorless and transparent, colored scattering and colorless scattering four types. Scattering light-emitting diode and reached indicator.
2 glossy, luminous tube characteristic points
Light tube glossy feature cyclotomic lights, side lights, rectangular surface emitting tube, lateral pipe, surface mounting miniature tubes. The round lamp diameter divided into φ2mm φ4.4mm, φ5mm, φ8mm φ10mm and φ20mm etc.. Abroad, usually to φ3mm light-emitting diode in mind for T-1; φ5mm's recorded as T-1 (3/4); the φ4.4mm's recorded as T-1 (1/4).
The angle can be estimated by the size of the half-value angle of the circular luminous intensity distribution.
Angle from the luminous intensity distribution to points three categories:
(1) high directivity. Epoxy package is generally pointed, or with a metal reflector cavity package, and does not add to the scattering agent. The half-value angle of 5 ° to 20 ° or smaller, having high directivity, can be used for the local illumination light source, or used to form an automatic detection system associated with the photodetector.
(2) The standard type. Usually used for light, half-value angle of 20 ° to 45 °.
(3) scattering type. This is a larger perspective indicator, half-value angle of 45 ° ~ 90 ° or greater, the larger the amount of the scattering agent.
3, by a light emitting diode structure stars
Divided wholly epoxy encapsulation, metal base epoxy encapsulated, ceramic base epoxy encapsulation and glass packaging structure according to the structure of the light-emitting diode.
Luminous intensity and working current
Luminous intensity and working current ordinary brightness LED (luminous intensity 100mcd); luminous intensity at 10 ~ 100mcd called high-brightness light-emitting diodes. General LED's operating current 10 mA to tens of mA, low current LED current below 2mA (the brightness with ordinary light-emitting tube the same).
In addition to the above classification, the chip material classification and functional classification