Measurement of Optoelectronic Performance of LED Display Screen

1、 Optical characteristic testing of LED display module

Measure the brightness uniformity, chromaticity uniformity, chromaticity coordinates, correlated color temperature, color gamut area, color gamut coverage, spectral distribution, viewing angle and other parameters of LED display modules to meet international and domestic standards.

2、 Monitor brightness, chromaticity, and white balance detection

The implementation of brightness meters, imaging brightness meters, and handheld color brightness meters to test the optical characteristics of LED display screens, including brightness, brightness uniformity, chromaticity coordinates, spectral power distribution, chromaticity uniformity, white balance, color gamut area, and color gamut coverage, to meet the measurement requirements of various occasions such as quality, research and development, and engineering sites.

3、 Flashing test of display screen

Mainly used for measuring the flicker characteristics of display screens.

4、 Comprehensive Performance Test of Light, Color, and Electricity for Single LED Incoming Materials

Test the luminous flux, luminous efficiency, luminous power, relative spectral power distribution, chromaticity coordinates, color temperature, dominant wavelength, peak wavelength, spectral half width, color rendering index, color purity, red ratio, color tolerance, forward voltage, forward current, reverse voltage, reverse current and other parameters of packaged LEDs.

5、 Single LED light intensity angle test for incoming materials

Test the light intensity distribution (light distribution curve), light intensity, three-dimensional light intensity distribution diagram, light intensity variation characteristic curve with forward current, forward current variation characteristic curve with forward voltage, light intensity variation characteristic curve with time, beam angle, luminous flux, forward voltage, forward current, reverse voltage, reverse current and other parameters of a single LED.

Distribution photometer

6、 Light radiation safety test for display screens (blue light hazard test)

Mainly used for light radiation safety testing of LED display screens, the testing items mainly include photochemical UV hazards on the skin and eyes, near UV hazards on the eyes, blue light hazards on the retina, thermal hazards on the retina, and other radiation hazard tests. The light radiation safety level is evaluated according to the degree of hazard, fully meeting the requirements of IEC/EN 62471, CIE S009, GB/T 20145, IEC/EN 60598, GB7000.1, 2005/32/EC EU directives and other standards.

OST-500 Optical Radiation Safety Measurement System BHA-2000 Retinal Blue Light Hazard Analyzer

7、 Electromagnetic compatibility EMC testing of displays

According to the requirements of relevant display standards, conduct electromagnetic compatibility tests on LED display screens, LED display modules, etc. The testing projects involve EMI conducted interference testing, electrostatic discharge (ESD), fast transient pulse (EFT), lightning surge (SURGE), frequency drop (DIP) and related radiation interference, immunity testing, etc.

8、 Testing of power supply, harmonics, and electrical performance of displays

Mainly used to provide stable AC and DC power supply conditions for displays, and to measure electrical performance parameters such as voltage, current, power, standby power consumption, and harmonic content of displays.