What are the factors that affect the test results of LED street lights?

by:ALLTOP      2021-04-13

The combination of LED technology and road lights makes road lighting enter a new stage of development. LED street lamps have become the focus of Ru0026D and innovation by street lamp manufacturers, and LED street lamps must be tested before they leave the factory, and only after they are qualified can they flow into the market. However, the LED street lamp test results are actually affected by many factors, and sometimes subtle factors can also affect the overall test results. Today, I will tell you what are the factors that affect the results of LED street lights.


One, temperature factor
Temperature will affect the luminous flux of the LED light source chip and the output current of the drive circuit. Generally, it will have a greater impact on the luminous flux of the LED chip, and the output current of the drive circuit has little effect.
Two, the accuracy of the test equipment
The accuracy of the test equipment includes parameters such as spectral matching error and temperature coefficient, which will affect the detection results of LED street light flux. When the accuracy of the test equipment is normal, it is necessary to ensure that the luminous flux is within a percent error.
3. The influence of stray light
The effect of stray light. Stray light includes the illumination of vehicles on the road, the light radiation of adjacent street lights, the interference of other light sources on the roadside, and the interference of light reflected by the street light source on other objects. The influence of stray light should be shielded during the test.
Four, environmental pollution factors
The impact of environmental pollution. Surface contamination will have a great impact on the test results, and the magnitude of the error can reach ~%, especially some products whose light-emitting surface doubles as the surface of the secondary optical lens have a concave-convex structure, which is easy to trap dirt and is not easy to clean. , This will seriously affect the LED street light flux and further affect the light distribution.


The above are the factors that affect the test results of LED street lights. Street lamp manufacturers should not only pay attention to these factors when testing, to ensure the accuracy of the test results, but also learn to cleverly prevent these factors from affecting the test results. So how to prevent it?
. The measurement accuracy should be at least better than %, and a higher standard test instrument should be selected;
. The influence of temperature must be controlled or compensated, and the change of ambient temperature within the test time span is preferably less than ℃;
. Light collection must avoid all kinds of stray light interference;
. The serious impact of surface pollution of LED lamps on the test must be considered. If the LED street light is installed in summer and the luminous decay is measured in winter, the effect will be better.

The last thing I want to say is that street lamp manufacturers must not only do a good job in the inspection of LED street lamps before they leave the factory, but also do a good job in the quality of LED street lamps. Each adopts high standards and high technological requirements to manufacture LED street lamps and pursues product quality. I believe Such LED street lights are what consumers love.


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