Looking for LED expertise? How to learn the knowledge of led lights

1. Power input interface: play the role of connecting the power supply, such as the lamp head of the bulb lamp.

2. Shell: It is generally composed of aluminum profiles with good heat dissipation, the characteristics of the shape of the lamp, the heat dissipation effect of the LED, and the heat dissipation design of the shell directly affect the efficiency and life of the lamp.

3. Lampshade: It is not only the effect of covering the lamp in order to make the light gather together, but also to prevent electric shock, and also to protect the eyes, so there will be a lampshade on each lamp, including PC lampshade, glass lampshade, and plastic lampshade.

4. LED light source: It is composed of N LEDs together, which is the core component of this lamp, and the lamps emit the initial visible light through it.

5. Driving power supply: because the working voltage of a single LED is low voltage

1.According to the diameter of the luminous dot (or luminous pixel), it can be divided into 3 (diameter 3mm), 5 (diameter 5mm), and so on;

2.According to the classification of luminous colors, it can be divided into monochrome (single red), bicolor (red and green light sources), full color (red, green and blue three primary colors, which can present all colors);

3.According to the use of classification, can be divided into strip screen (can only be displayed in a single line), indoor LED (small pixel diameter), outdoor LED (larger pixels);

1 According to the luminous tube luminous color.

According to the luminous tube luminous color, it can be divided into red, orange, green (subdivided into yellow-green, standard green and pure green), blue light, etc. In addition, some light-emitting diodes contain two or three colors of chips. According to the light output of the light-emitting diode with or without scattering agent, colored or colorless, the light-emitting diodes of the above colors can also be divided into four types: colored transparent, colorless transparent, colored scattering and colorless scattering.

Scattering type light-emitting diode and up to be used as an indicator light.

2. According to the characteristics of the glossy surface of the light-emitting tube.

According to the characteristics of the luminous tube, it is divided into round lamp, square lamp, rectangular, surface luminous tube, lateral tube, micro tube for surface mounting, etc. Round lights are divided into 2mm, 20mm and so on according to their diameter. In foreign countries, 3mm LEDs are usually recorded as T-1; Denote 5mm as T-1 (3 4); Denote as t-1 (1 4).

The angular distribution of luminous intensity in a circular can be estimated from the half-value angle size. There are three categories from the angular distribution of luminous intensity:

(1) High directivity. It is usually encapsulated in a pointed epoxy or with a metal reflector cavity without the addition of scattering agents. With a half-value angle of 5° 20° or less, it has a high directivity and can be used as a local illumination source or in combination with a light detector to form an automatic detection system.

(2) Standard type. It is usually used as an indicator light, and its half-value angle is 20° 45°.

(3) Scattering type. This is an indicator with a larger viewing angle, a half-value angle of 45° 90° or greater, and a larger amount of scattering agent.

3. According to the structure of the light-emitting diode, according to the structure of the light-emitting diode, there are full epoxy encapsulation, metal base epoxy packaging, ceramic base epoxy packaging and glass packaging.

4 According to the luminous intensity and working current.

According to the luminous intensity and working current, there are ordinary brightness LEDs (luminous intensity<10mcd); Ultra-high brightness LED (luminous intensity: 100mcd); The luminous intensity between 10 and 100mcd is called a high-brightness light-emitting diode. The working current of general LEDs is in the tens of mA to tens of mA, while the working current of low-current LEDs is less than 2mA (the brightness is the same as that of ordinary light-emitting tubes).

In addition to the above classification methods, there are also classification methods by chip material and classification by function.

LED, this concept is big, such as LED chip or LED lamp beads or LED display or LED lighting? There are other categories below!

Indoor lamps, outdoor night lighting, display series. I don't know what industry you work in.

LED lamps and lanterns are divided into two kinds according to their use: outdoor and indoor, outdoor are: street lights, wall washers, flood lights, tunnel lights, buried lights, underwater lights, point lights, small spotlights, guardrail tubes, meteor lights, garden lights, indoor are:

Ceiling lights, light cups, wall lights, track lights, downlights, chandeliers, panel lights.

It is the abbreviation of light-emitting diode.

You should be asking about light-emitting diode: the abbreviation of the English word, the main meaning: LED = light emitting diode, light-emitting diode, is a solid-state semiconductor device that can convert electrical energy into visible light, it can directly convert electricity into light.