How to do photometry test for outdoor lights according to CIE 121?

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The following procedures are required to complete the photometry test for outdoor lights in accordance with the standard CIE 121 established by the International Commission on Illumination (CIE):

Preparation:

Collect all the essential tools, such as a photometer, goniometer, and a source of reference light.

Make certain that the testing setting is appropriate, with a consistent and well-managed amount of ambient light.

Prepare the test sample, which may be anything like an outside light fixture, by making sure that it is correctly placed and in good functioning condition.

Calibration:

Follow the directions provided by the manufacturer to properly calibrate both the photometer and the goniometer.

Check if the measuring equipment is accurate by comparing the results of the measurements you took with the reference light source to the photometric values that are already known about it.

Measurement:

Position the photometer so that it is a predetermined distance from the sample to be tested.

After turning on the light outside, use the goniometer to determine the luminous intensity of the light from a variety of angles.

To fully comply with the requirements of the CIE 121 standard, you will need to repeat the measurement at a variety of different illuminance levels.

Make careful to record the outcomes of each measurement.

Analysis:

Create a photometric distribution pattern using the data that was collected and plot it.

Conduct an analysis of the photometric performance of the outdoor lighting in accordance with the CIE 121 standard. This standard outlines the very minimum criteria for luminous intensity, chromaticity, and color rendering capabilities.

In order to establish whether or not the outdoor light satisfies the performance criteria, compare the findings to the specifications of the light.

Reporting:

It is essential that the findings of the photometry test be reported in an exhaustive and precise way, according to the structure outlined in the CIE 121 standard.

Include the test results, as well as the photometric distribution pattern and analysis of the outdoor light's performance photometrically.

The photometry test for outdoor lights in accordance with the CIE 121 standard may be done reliably and consistently if these procedures are followed. The results of the test provide significant information regarding the performance of items designed for outdoor lighting.



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