How to use a spectrometer to accurately measure the spectral characteristics of LEDs

Posted By HOPOO   |   25 Oct, 2023   |   1158 views

LED is a very competitive light source with significant advantages such as long life and high luminous efficiency. Therefore, it is increasingly used in the field of lighting engineering. However, because the light-emitting mechanism of LEDs is different from traditional light-emitting devices, the existing luminescence characterization and measurement methods cannot adapt, which puts forward higher requirements for measuring the light characteristics of LEDs and developing corresponding detection devices. Therefore, systematic research is urgently needed on the measurement and data analysis of the effectiveness of LED lighting equipment.

LED luminescence is highly dependent on heat. Its temperature rise will cause the spectrum to broaden, red shift, and reduce luminous efficiency. Therefore, special equipment is required to measure parameters during LED operation to ensure measurement reliability and consistency. The selection of such measurement parameters is to use a special single-color LED spectrometer to comply with the measurement requirements of 25°C or higher set by LED manufacturers or standards, and to accurately estimate the spatial distribution of LEDs from multiple angles. Such measurements. For this reason, it is necessary to select a spectrometer with high measurement speed to facilitate the measurement of single-color lighting of LEDs. When pulse modulating LEDs, the traditional mechanical scanning spectrometer cannot meet the high-speed measurement requirements, so it is even more important. Therefore, to correctly test LED light color parameters, a single-color LED spectrometer with high measurement speed must be used to meet its measurement application requirements.

The accuracy of LED measurement puts forward higher requirements for spectrometers. Since there is a large difference in the spectral power distribution of white LEDs and incandescent lamps, and the spectral difference of color LEDs is even more significant, this forces the spectrometer to have higher spectral resolution. Low stray light and high linearity performance. At the same time, the control of light color quality of LED light sources has put forward higher requirements. The R9 index has been added to a large number of standards. There are also many groups in the world who are studying to systematically improve the color rendering evaluation index. On this basis, IES TM-24-13 adopts the concept and requirements of equivalent illuminance (EVE) based on the ratio (S/P). This forces higher multi-weight value testing requirements for spectrometers for these new requirements for light color quality control.


HOPOOCOLOR SPECTROMETER WITH 2NM BAND WIDTH . 0.2NM SPECTRAL RESOLUTION

More details pls contact us: sales_fob@hopoocolor.com

MENU

BEST SALE

HANGZHOU HOPOO LIGHT&COLOR TECHNOLOGY CO.,LTD.

Welcome to Hopoocolor, a global leader in lighting optical detection built on innovation, collaboration and engineering excellence. HopooWhy Hopoo haveWithHopoo successfully developed a series of multi-functional optical testing equipm …

Read More

HOT PRODUCTS

  • Goniophotometer

    According to the requirements of CIE, IESNA and national standards, we have achieved testing methods as B-(B、A-a and C-y through rotating lamps. It is used to test the spatial light intensity distribution as well as variety luminosity parameter of indoor spotlight, cast light lamp and street light.

    Read More
  • OHSP-350 Portable Spectral irradiance colorimeter

    OHSP-350 Spectral irradiance colorimeter, integrated spectrum, CCT, CRI, Lux, irradiation .etc parameters in one.

    Read More
  • HP880 Compact Goniophotometer for Single LED test

    HP880 Compact Goniophotometer for Single LED test

    Read More
  • OHSP350IR 380nm-1050nm IR Spectrometer

    The spectrometer integrates spectrum and irradiance test functions. It is widely used in red light therapy,infrared night vision monitoring,infrared remote control transmitter tube ,Infrared laser etc.

    Read More
  • CXCSG-02 Imaging Colorimeter(Production Line)

    For the design of automotive lighting accessories module assembly and injection molded parts, the brightness L, color coordinates X, Y, color temperature, dominant wavelength and other parameters of each lighting component can be measured.

    Read More
  • OHSP350IRS 760nm-1100nm IR Spectrometer

    The spectrometer integrates spectrum and irradiance test functions. It is widely used in red light therapy,infrared night vision monitoring,infrared remote control transmitter tube ,Infrared laser etc.

    Read More
  • Goniophotometer

    According to the requirements of CIE, IESNA and national standards, It is used to test the spatial light intensity distribution as well as variety luminosity parameter of indoor spotlight, cast light lamp and street light. Add Grow light PPF parameters.

    Read More
  • CX-1200E Imaging Illuminance meter

    For the design of automotive lighting accessories module assembly and injection molded parts, the illuminance lx, illuminance distribution .

    Read More
  • GMS-1000 Glare measuring equipment

    The GMS-1000 glare measurement system adopts a high-precision imaging luminance meter. The high-precision measurement and analysis of the unified glare index UGR is realized through a precision electronically controlled pan-tilt and special measurement and control software.

    Read More
  • HPCS-300P Mini PPFD Spectrometer

    HPCS-300P Mini PPFD Spectrometer,use with pc software.

    Read More
  • HPCS6500UV Spectroradiometer

    HPCS6500UV Spectroradiometer test system is a multifunctional comprehensive test system which integrates photometric parameters, colorimetric parameters, electrical parameters, etc. The product adopts modular and integrated design, which makes the structure compact. With a 10.1-inch LCD screen

    Read More
  • OHSP660 Spectrum reflectance Tester Color L*a*b Tester

    OHSP-660 Spectral reflectance spectrometer ,integrated Spectrum、reflectance、L*A*B in one

    Read More