A goniophotometer mainly used for the measurement of light distribution performance of lamps and light sources, that is, the breadth of lamps and lanterns in different directions of space, and the distribution of chromaticity values. Measure the absorbance of light at a specific wavelength or within a certain wavelength range of the substance to be tested, and perform qualitative and quantitative analysis of the substance. If you need to test parameters such as IES files, light intensity distribution, etc., a goniophotometer system is recommended. With With the continuous development of the photometer industry, more and more companies and industries have used photometers, and a large number of companies have entered and developed photometers.
The goniophotometer roughly consists of two parts: goniometer; photometer (can also be a chromaticity test device), collectively called goniophotometer, goniophotometer functions:
1. Metering light distribution curve, that is, the luminosity distribution
2. Test the color distribution
3. Turn the total luminous flux of the test luminaire
4. Provide standard format files such as IES/LDT for back-end lighting design
The goniophotometer can be divided into two types: vertical goniophotometer and horizontal goniophotometer, both of which are completely satisfied with LM-79-19. However, the two measurement methods have their own advantages and disadvantages.
1. The test principles of the two photometers are different:
1. Vertical goniophotometer (the lamp under test remains lit, and the mirror and the probe move coaxially)
The luminaire position is always kept the same and only the reflector is rotated to improve data accuracy while testing. In a specific environment, the factors that affect the accuracy of the goniophotometer are as follows: scanning resolution, viewing angle range, polarization of the instrument itself, air flow, ambient temperature, etc. The most important of which are the polarization, air flow and temperature of the instrument, because when the dual-arm/single-arm horizontal goniophotometer is used to measure lamps, the changes in air flow and temperature caused by the movement of the lamps themselves will reduce the relevant measurement data. Accuracy; the polarization of the instrument will also affect the test accuracy, but with the development of science and technology, the use of more advanced power devices and control technology, the impact of polarization has been very limited.
2. Horizontal goniophotometer (the lamp under test rotates around the horizontal/vertical direction, the probe position remains unchanged)
In summary, HOPOOCOLOR introduces how to choose a suitable photometer: HPG2000 rotating probe vertical distribution photometer (full space distribution photometer) fully meets LM-79-19, EN13032-1 clause 6.1.1.3 distribution photometer Meter type 4 requirements, CIE S025, SASO2902, IS16106 and GB and other requirements for optical parameter testing.
HPG1900 is a highly Goniophotometer system for testing the luminous intensity distribution of lamps, which can be applied to quality assessment and quality control of signal lamps, automotive, motor, marine and retro reflector lamps.
HPG1800 is a high-precision Goniophotometer (light distribution curve) for measuring luminous intensity distribution. The device is mainly used in the measurement of photometric parameters in industrial laboratories. It mainly tests LED lamps, HID lamps and fluorescent lamps.
The HP880D compact Goniophotometer comes with a 1-meter dark box, which is used to test the light intensity distribution curve, light intensity parameters, diffusion angle, beam angle and other light parameters of LEDs, LED modules, etc. whose illumination angle does not exceed 180 degrees.
Hangzhou Hopoo Light and Color Technology Co., Ltd. focuses on the production, research and development and sales of lighting and electrical testing instruments. The whole series of products are developed and produced in strict accordance with the requirements of ISO9001:2015; all products meet the requirements of CIE; in addition, All products of Hongpu Light and Color have passed CE certification and obtained the qualification to export to the European Union.
The main products include goniophotometers, integrating spheres, spectrometers, illuminometers, colorimeters, imaging luminance meters, and LED test instruments.
If you want to know more technical or product information, please feel free to contact us.
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