Introduction

With the development of optical fiber technology, various new types of optical fibers continue to appear, and optical fibers are increasingly used in fields such as optical fiber communications and optical fiber sensing. The geometric parameters of the optical fiber end face are an important indicator of the optical fiber and will directly affect the transmission of the optical fiber. LED is a new generation of light-emitting devices. With its low energy consumption, high efficiency, high stability and other characteristics, it is widely used in lighting, optical communications and other fields, and gradually replaces traditional light sources. Understanding the various parameters of LEDs and mastering the testing methods are the basis for the development and application of such devices. This set of teaching experimental products, developed using the latest optoelectronic devices and test methods widely used in modern industry, is suitable for basic optoelectronic experiments for undergraduates majoring in optoelectronics, physics and other related majors, and practical training courses for students in higher vocational colleges.

Experiments

LED volt-ampere characteristic measurement experiment;

LED spatial characteristics measurement experiment (half intensity angle, divergence angle);

LED photometric measurement experiment (luminous flux);

LED electro-optical efficiency measurement experiment;

LED colorimetry measurement experiments (tristimulus value, chromaticity diagram, color temperature, spectral characteristics, color rendering index, dominant wavelength, color purity, chromaticity diagram);

Three-color LED color matching experiment.

Experimental Knowledge

Forward/reverse voltage, forward/reverse current, volt-ampere characteristic curve, luminous flux, color coordinates, correlated color temperature, dominant wavelength, color purity, tristimulus value, color rendering index, CIE industry standards.

Typical Testing

        LED Performance Test Software                   LED Illuminance Measurement Device

       LED Color Measurement Device                                          Spectrometer