How Many Types of Light Emitting Diode

1.      According to the LED light color.

1.1   According to the LED light color, can devided into red, orange, green, blue, white , etc. And some light-emitting diodes include two or three color chips.

1.2   According to the light emitting diode at the doped or non-doped scattering agent, colored or colorless, the various colors of light-emitting diodes can be divided into colored, transparent, colorless and transparent, colored scattering and colorless scattering four types. Scattering of light-emitting diodes is use for indicator.

In general, LED display screen is use red, green, and blue. As common lighting is used white LED.

2.      According to LED surface.

According to LED surface can devided into cyclotomic lights, side lights, rectangular, surface LED, lateral pipe, surface mount miniature tubes. circular lamp divided by the diameter there isφ2mm, φ4.4mm, φ5mm, φ8mm, φ10mm and φ20mm etc.

3.      From the distribution of light intensity angular can be divided into three categories.

3.1   High directivity. Generally pointed epoxy package, or package with a metal reflector cavity, and does not add scattering agent which has high directivity, can be used for local illumination light source.

3.2   Standard type. Typically used for indicator, and its half-value angle is 20 ° ~ 45 °.

3.3   Scattering-type. This indicator is a larger perspective, the half angle of 45 ° ~ 90 ° or more with a large amount of scattering agent.

4.      According to the structure of the light emitting diode.

According to the structure of light-emitting diodes can be devided into full epoxy encapsulation, epoxy encapsulated metal base, ceramic base epoxy packaging and glass packaging and other structures.

5.      According to the luminous intensity and working current.

There are normal brightness LED and high brightness LED.