How do you use LISUN goniophotometer for CIE B-β test?

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The goniophotometer is a tool that is used for the purpose of measuring the angular distribution of light that is produced by a light source, such as an LED or a lamp. A technique that is used to measure the color rendering capabilities of a light source is known as the CIE B- test.

In order to carry out a CIE B- test, the following procedures should be followed while using a goniophotometer:

  • Calibrate: To calibrate the goniophotometer, first position the light source so that it is centered inside the measuring chamber of the goniometer. Next, adjust the mirrors so that they reflect light in the direction of the detector.
  • Adjust the following settings for the test: In the software that comes with the goniophotometer, you will need to choose the right measurement angle range, detector sensitivity, and other test settings.
  • Begin the process of measuring: Begin the process of measuring and compiling data on the angular distribution of the light produced by the source as soon as possible.
  • Measure the reference source: When measuring the test source, you should also measure the reference source, which is commonly a blackbody radiator, under identical circumstances.
  • Analyze the data: Utilize the software that came with the photometer and colorimeter to perform an analysis on the data that was gathered. This will allow you to calculate the relevant CIE B- parameters, such as the color rendering index (CRI) and special color rendering indices (Ri), for each of the 14 CIE test color samples.
  • Give an account of the results: Create a report of the findings of the test and include the relevant CIE B-parameters for each of the 14 CIE test color samples, such as CRI and special color rendering indices (Ri).

It is essential to keep in mind that the goniophotometer is a sophisticated piece of apparatus used for measuring light, and that the procedure may be different for various types of goniophotometer. When conducting appropriate use and testing, it is suggested to adhere to the directions and recommendations provided by the manufacturer. In addition, CIE B- is one of the ways that may be used to measure the color rendering capabilities of light sources. Other approaches, such as CIE Ra, which can also be used with a goniophotometer, are also available.

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