How to test led lamp beads
Date:
2020-10-13

LED is the abbreviation of semiconductor light-emitting diode. It is made of semiconductor materials. It can directly convert electric energy into light energy and electrical signal into optical signal. Its characteristics are low power consumption, high brightness, gorgeous color, anti vibration, long life, cold light source, etc., which is the real 'green lighting'. In modern life, LED products will inevitably replace traditional lamps and become new materials for human lighting. The following magic lamp technology brings you led lamp bead test method:


See brightness: LED lamp bead brightness is different, price is different. Conventional LED lamp beads should meet the laser class I standard.


Test whether leakage current: leakage current LED lamp beads are unidirectional conductive luminescent body, if there is reverse current, it is called leakage. LED lamp beads with large leakage current have short life and low price.


Test antistatic ability: antistatic ability of LED lamp bead life is long, so the price is high. Generally, LED lamp beads with antistatic capacity greater than 700V can be used for LED lamps and lanterns.


Look at the luminous angle: LED beads with different luminous angles have different luminous angles. Special luminous angle, higher price. If full diffuse angle, the price is higher.


Test wavelength of the same: the same wavelength LED lamp beads, the color is consistent, if the color is required to be consistent, then the price is high. It is difficult for manufacturers without led bead spectrophotometer to produce pure color products.


How to test led lamp beads


Evaluation of service life: the key to different quality is life, which is determined by light attenuation. Small light attenuation, long life, high price.


See whether the safety performance meets the standard: the colloid of ordinary LED lamp beads is generally epoxy resin, and the LED lamp beads with anti ultraviolet and fire retardant agent are more expensive. High quality outdoor LED lighting should be UV resistant and fireproof. Each product has different design, and different design is suitable for different purposes. The reliability design of LED infrared lighting includes: electrical safety, fire safety, applicable environmental safety, mechanical safety, health safety, safe use time and other factors. From the perspective of electrical safety, it should comply with relevant international and national standards.


Distinguish chip grade: LED lamp bead luminous body is chip, different chip, price difference is very big. Chips in Japan and the United States are more expensive, while those in Taiwan and China are relatively low.


Distinguish chip size: the size of the chip is indicated by the side length. The quality of LED lamp beads with large chip is better than that of small chip. The price is directly proportional to the size of the wafer.


For more information about LED, please pay attention to magic lamp.


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