Knowledge of LED spectrometers

Today, let me introduce you to LED spectrometers

LED spectrophotometer is a machine that classifies and screens the wavelength (color), intensity, and current voltage of the light emitted by LEDs.

Components

(1) High speed optical spectrometer; (2) Electrical parameter measuring instrument; (3) Mechanical conveying system; The most core and critical part is the high-speed optical spectrometer. Due to the requirement of the LED spectrometer to achieve a sorting speed of over 10000 LEDs per hour, there is a high demand for the detection and data processing speed of the optical spectrometer.

Product types

SMD LED (SMD) splitter; High power LED spectrometer. Double legged single crystal, double legged twin crystal, triple legged twin crystal Φ 3 Φ 5 Φ 8 Φ 10 class round head and bullet head LED chip lights

Spectral materials

0603/0805/1210/5050 is a common splitter model for LED spectrometers.

0603: Converted to metric system, it is 1005, indicating that the length of LED components is 1.00MM and the width is 0.5MM, abbreviated as 1005 in the industry

0805: Converted to metric system, it is 2125, indicating that the length of LED components is 2.00MM and the width is 1.25MM, abbreviated as 2125 in the industry

1210: Converted to metric system, it is 3528, indicating that the length and width of LED components are 3.5MM and 2.8MM, abbreviated as 3528 in the industry

5050: This is the metric nomenclature, indicating that the length and width of LED components are 5.00MM and 5.00MM, commonly referred to as 5050 in the industry

Product features

1. Measurable wavelength λ= 200-1100nm, light intensity Iv=0-100000 mcd CIE visual function detector;

2. Adopting unique white light measurement methods and optical devices, and more advanced white light color separation technology;

3. Can test any package of common cathode or common anode, Wafer, S or Lamp packages of single leg single crystal, double leg twin crystal, or triple leg twin crystal, can test infrared emitting and receiving tubes;

4. The measurement standards can be traced back to CIE127-1997, Instrument Systems, NIST, and Keithley;

5. Optical measurement sensing devices such as integrating spheres, visual function photodetectors, or spectroscopic spectrometers can be selected;

6. Real time CIE coordinate map and landing point display;

7. Resolution of 16 bit constant current and voltage source and digital measurement meter;

8. The Kelvin method is used in the electrical measurement circuit to avoid measurement errors caused by contact resistance and line resistance;

9. A comprehensive report printing and data statistics system;

10. A full range of LED testing system solutions, using PC based devices, providing fast and flexible automatic testing and human-machine interaction interfaces;

11. Users can freely define the voltage and current source values, set the upper and lower limits of the test items, and arrange the output BIN bits of the measured values at will;

12. Quick grading setting function.

13. Can analyze the coordinate positions of blue light wavelength and white light synthesized from yellow fluorescent powder. [2]

Important product parameters

1. Current voltage measurement:

Current source range: 0-350mA

Current source accuracy: ± 0.1%/16 bits ± 6uA

Voltage source range: 0-20V

Voltage source accuracy: ± 0.05%/16 bits ± 0.38mV

4-level programmable measurement gain: 0.1/0.5/1.0/10.0

Voltage measurement range: 0~± 100V/0~± 20V/0~± 10V/0~± 1V

Voltage measurement accuracy: ± 0.1% ± 2mV

2. Voltage current measurement:

Voltage source range: 0-20V

Current source range: 0-350mA

4-level programmable measurement gain: 0.1/0.5/1.0/10.0

Voltage measurement range: 0~± 100V/0~± 20V/0~± 10V/0~± 1V

Current measurement accuracy: ± 0.1% 0.03uA

3. Light intensity measurement:

Range: 0-100000 mcd

Accuracy: ± 5%

Repeatability: ± 0.5%

4. Color measurement:

Spectrometer/detector type:

Ocean Optics USB2000+ /Sony Silicon CCD,2048Pixels

Ocean Optics USB4000 /Toshiba Silicon CCD,3648Pixels

Control Development Inc. PDA-512-ISA/USB

Wavelength range: 350~1050nm/320~1020nm

Spectral exposure time：1ms~65535ms

spectral resolution ：1.0nm

Pixel resolution：0.3nm

Chroma coordinate resolution：0.003

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