Fully characterize LED characteristics

This Apparatus included photometric, electricity, chroma and thermal 4 modules. These are classic experiments on LED characteristics：

1. Module of electrical exeriment：Voltage of turning point；U-I characteristic curve；Working voltage

2. Module of light space distribution experiment：Relationship between average LED's light and current ；Measurement of different LED's light distribution curve

3. Module of photometric and chromatic experiment: Relationship between different LED's luminous flux, luminous   efficiency and current ；Measurement of different LED's chromatic parameter

4. Module of thermal characteristic experiment：Measurement of K coefficient ；Measurement of the junction temperature, thermal ；The relationship between temperature and parameters

Professional curriculum and courseware

In accordance with international standards and national standards designed LED measurements, the measured parameters is complete, contains common physical concepts and industrial parameters. The curriculum written by professor, which is refer to the contents of relative photoelectric experiments materials, Like academic papers, dissertations.

Specialty instrument

The key items like Power supply, constant current power supply, integrating Sphere, Radiometer, Temperature Controller Chamber are cooperated with professional LED Measurement Company, Not only meeting the teaching purpose, and also to maintain the function, accuracy and reliability standards.
1set spectrometer included in this Apparatus, It is also scientific and industrial grade. In addition to this experiment, but also can be applied independently associated with spectral and colorimetric measurement experiments.

Computer-based interactive educational Learning software

The software base on the Concept of computer-based learning, Emphasis on learning process and interaction，Guide students to learn the relevant knowledge step by step.

Typical experiments and data

1. Feature of electricity and light conversion

Forware and reverse V-I curve

2. Light spatial distribution

Average intensity vs current curve in 1D

Light spatial distribution curve in 2D

3. Relationship between current, flux and luminous efficiency

Current vs flux curve

Current vs luminous efficiency curve

4. Chromatic parameters

Chromatic parameters

5. Thermal characteristic

The module is used to measure and calculate LED’s K coefficient, thermal resistance and junction temperature. The software can real-time display the Voltage vs Time curve, and analyze the thermal resistance and junction temperature in a steable state.

Little current’s K coefficient testing

Parts List

BEM-5201-06    Track, L600mm

BEM-5204-50    Optical Carrier, W50mm

BEM-5204-30    Optical Carrier, W30mm

BEM-5214    Adjustment Platform for Light Source, Φ110mm，360° Scale

BEM-5215    270mm Aperture Tube Assemby

BEM-5205-25    Adjustable Post Holder, Travel=25mm

BEM-5209-09    Post, L90mm

BEM-5410    View Screen, Φ30mm

BEM-5035    LED Power Supply Ⅱ, 0-15V

BEM-5036    LED Power Supply Ⅰ, 0-50/500mA

BEM-5409    Illuminometer with Detector, CHL, Visible/0.6m

BEM-5216-15003    Integrating sphere, Φ150mm, SMA905, including Φ50mm, Φ30mm, Φ38mm three fixing holes,

M20 * 0.5 connection seat

BEM-5217    Lighting fixture and jig supporter for LED, Φ50mm

BIM-6001-06    Fiber Spectrometer, 350nm-1050nm, Resolution ≤1nm

BIM-6102-0615    Quartz Fiber, L1.5m, Φ600μm

BEM-5037    Pulse Power Supply, 5-50mV/50-500mA,1kHz

BEM-5038    Temperature Controller Power Supply, 0-100°C, ±0.1°C

BEM-5040    Temperature Controller System, 12V

BIM-6210    Fan-cooled tungsten light source