Moving mirror goniophotometer for LED outdoor light fixtures

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A mirror that moves back and forth. The light output of a lighting fixture may be measured at a variety of angles using a goniophotometer, which is a form of goniophotometer that employs a moving mirror. It is possible to put LED outdoor light fixtures through their photometric paces and evaluate how well they measure up to industry standards such as IESNA LM-79 and CIE 121 with the help of this tool.

The mirror that moves across the room goniophotometers normally include a rotating stage that is used to hold the light fixture that is being evaluated, a detector that is used to measure the light output, and a moving mirror that is used to reflect the light from the light fixture onto the detector. Because the mirror may be moved through a variety of positions, the light output can be monitored from a number of various perspectives.

The following procedures need to be carried out to evaluate LED outdoor lighting installations using a moving mirror goniophotometer:

  1. Install the goniophotometer on a surface that is both stable and level and check to see that it has been calibrated in accordance with the instructions provided by the manufacturer.
  2. Placement of the light fixture Position the LED outdoor light fixture on the revolving stage of the goniophotometer and orient it in such a way that the light is directed towards the moving mirror.
  3. Set the measurement circumstances by using the software that comes with the goniophotometer to configure the measurement parameters. These conditions include the measurement range, the detector sensitivity, and the measurement angles.
  4. Start the measurement by initiating it using the software that came with the goniophotometer. During the measurement, make sure that the light fixture does not move. The light output will be measured in a variety of different directions while the mirror rotates around in a circle.
  5. After the measurement is finished, the software of the goniophotometer will deliver the data in the form of a polar diagram. This diagram is a graphical depiction of the angular distribution of luminous intensity, and it may be used to analyze the data. Data such as the total luminous flux, the center beam intensity, and other characteristics that are necessary to examine the LED light source may also be provided by the program. These parameters include:
  6. Compare the data with the standard You should compare the data with the standards that have been defined by the manufacturer or with the appropriate industry standards, such as IESNA LM-79, CIE121, etc.

It is essential to keep in mind that the particular stages may change depending on the brand of the moving mirror goniophotometer as well as the software that is being used. It is also vital to examine the manufacturer's instructions and recommendations for precise specifics on how to operate the equipment. This may be found in the manual that came with the product.

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