Russia – installation and training for LSG-1700B Rotation Luminaire Goniophotometer &LPCE-3 LPCE-3 spectrometer integrating sphere system

This is a new company which mainly manufactures lighting fixtures.

When we arrived in Russia, our engineers went to customer’s company to do installation training for this customer immediately. This customer purchased our LSG-1700B Rotation Luminaire Goniophotometer (Big Size) and LPCE-3 spectrometer integrating sphere system. Their engineers and managers also received our engineers very enthusiastically. Our engineers carefully guide them how to use the two systems. They also gave them a complete and comprehensive training. During the training, the engineers were always talking and laughing. Our engineers said this ampere training trip was very happy. At the same time, we are also very grateful for the warm reception of our customers, so that our engineers have such an unforgettable trip to Russia!
Please take a look at the photos taken by customers at that time:

[caption id="attachment_11040" align="alignnone" width="900"] Picture 1. Group photo of LISUN engineer and customer in front of LSG-1700B Rotation Luminaire Goniophotometer[/caption]

[caption id="attachment_11041" align="alignnone" width="900"] Picture 2. Group photo of LISUN engineer guiding customers to operate LSG-1700B Rotation Luminaire Goniophotometer[/caption]

[caption id="attachment_11042" align="alignnone" width="900"] Picture 3. Group photo of LISUN engineer and customer in front of LPCE-3 spectrometer integrating sphere system[/caption]

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing,Electronic Ballast Tester, Electrical Safety Testing, Environmental Test Chamber, Plug and Switch Testing, AC and DC Power Supply and etc.

The difference between Integrating Sphere Test System and Goniophotometer

 The difference between Integrating Sphere Test System and Goniophotometer

In optical testing, the measurement of luminous flux and color temperature are essential. There are two test equipment for the measurement: Integrating Sphere Testing System and Goniophotometer. Here we give you a brief introduction to the difference of these two test system:

1. Integrating Sphere & Spectroradiometer Test System

The Integrating Sphere Test System make measurement using integral method. Firstly, calibrated the system with a standard lighting source and then measure the sample lamp. The test result of luminous flux or color temperature is the relative value of the data of the standard lighting source. The measurement is made through the diffuse reflection spread the light into the optical fiber, and then measure it, the test time is very short, only need several seconds.

In the process of diffuse emission, the light will be affected by the self-absorption performance of the lamp housing, so there may be a certain error in the test results. In addition, if the illumination angle of the lamp is too small, there will be light loss in the integrating sphere due to diffuse reflection, which will result in the light finally transmitted to the spectrometer will be a little different from the original light source, so the test result may would have a certain error. Ans these errors can be reduced in the following ways:

For the error caused by the casing, we can use the auxiliary lamp to correct the test result. The method is as follows: (1) Put the standard lighting source into the integrating sphere and not light it, put the auxiliary lamp into the ball and light it, then test (2) Take out the standard lighting source, put the sample light into the integrating sphere and do not light up, also light up the auxiliary and then test it. (3) By comparing the difference in luminous flux measured in the above two states, the software will form a correction factor (the self-absorption coefficient of the casing). This factor can be used to calculate the test results when testing the sample lamps of the same type of casing.

The error caused by the illuminating angle can be reduced through 2π test method. If the illumination angle is small, the 4π test method will result in uneven illumination in the ball, which will lead to the test error, and the 2π test method can reduce the unevenness of the light source inside the ball. Thereby reducing the test error of the luminous flux.

2. Goniophotometer test system

The goniophotoometer make measurement using photometric method. During the test, During the test, the sample lamp or probe under test can be automatically rotated under the control of software to obtain the parameter values at different angles. The test result is a spatial luminous intensity table and a spatial color table, showing the values of in different directions, not just the average value. The initial test data can be referred to the following data sheet:

 

And the distributed photometer test is basically not affected by the casing of the lamp, the angle of lamps. And of course, the average value of the luminous flux and color temperature can also be displayed in the test report.

In general, if test the parameters related to space, angle, and distance (such as luminous intensity distribution, UGR, etc.), it needs to be tested with goniophotometer. According to the formal requirements, the integrating sphere system is used to test the lighting source, and the goniophotometer is used to test the luminaires. In addition, you can also confirm the requirements by referring to the following methods:

1. For general quality inspection, use the integrating sphere test system; when it is required to have a higher laboratory, it is recommended to use goniophotometer.
2. Test duration: The integration sphere test system can make the measurement in just a few seconds after the calibration, and the goniophotometer needs at least 15 minutes to make the measurement.

The difference between Integrating Sphere Test System and Goniophotometer

 The difference between Integrating Sphere Test System and Goniophotometer

In optical testing, the measurement of luminous flux and color temperature are essential. There are two test equipment for the measurement: Integrating Sphere Testing System and Goniophotometer. Here we give you a brief introduction to the difference of these two test system:

1. Integrating Sphere & Spectroradiometer Test System

The Integrating Sphere Test System make measurement using integral method. Firstly, calibrated the system with a standard lighting source and then measure the sample lamp. The test result of luminous flux or color temperature is the relative value of the data of the standard lighting source. The measurement is made through the diffuse reflection spread the light into the optical fiber, and then measure it, the test time is very short, only need several seconds.

In the process of diffuse emission, the light will be affected by the self-absorption performance of the lamp housing, so there may be a certain error in the test results. In addition, if the illumination angle of the lamp is too small, there will be light loss in the integrating sphere due to diffuse reflection, which will result in the light finally transmitted to the spectrometer will be a little different from the original light source, so the test result may would have a certain error. Ans these errors can be reduced in the following ways:

For the error caused by the casing, we can use the auxiliary lamp to correct the test result. The method is as follows: (1) Put the standard lighting source into the integrating sphere and not light it, put the auxiliary lamp into the ball and light it, then test (2) Take out the standard lighting source, put the sample light into the integrating sphere and do not light up, also light up the auxiliary and then test it. (3) By comparing the difference in luminous flux measured in the above two states, the software will form a correction factor (the self-absorption coefficient of the casing). This factor can be used to calculate the test results when testing the sample lamps of the same type of casing.

The error caused by the illuminating angle can be reduced through 2π test method. If the illumination angle is small, the 4π test method will result in uneven illumination in the ball, which will lead to the test error, and the 2π test method can reduce the unevenness of the light source inside the ball. Thereby reducing the test error of the luminous flux.

2. Goniophotometer test system

The goniophotoometer make measurement using photometric method. During the test, During the test, the sample lamp or probe under test can be automatically rotated under the control of software to obtain the parameter values at different angles. The test result is a spatial luminous intensity table and a spatial color table, showing the values of in different directions, not just the average value. The initial test data can be referred to the following data sheet:

 

And the distributed photometer test is basically not affected by the casing of the lamp, the angle of lamps. And of course, the average value of the luminous flux and color temperature can also be displayed in the test report.

In general, if test the parameters related to space, angle, and distance (such as luminous intensity distribution, UGR, etc.), it needs to be tested with goniophotometer. According to the formal requirements, the integrating sphere system is used to test the lighting source, and the goniophotometer is used to test the luminaires. In addition, you can also confirm the requirements by referring to the following methods:

1. For general quality inspection, use the integrating sphere test system; when it is required to have a higher laboratory, it is recommended to use goniophotometer.
2. Test duration: The integration sphere test system can make the measurement in just a few seconds after the calibration, and the goniophotometer needs at least 15 minutes to make the measurement.

Denmark - Installation and training for Goniophotometer, Integrating Sphere System amd EMI test equipment

This Danish customer is a testing institution. They purchased LSG-1700B Rotation Luminaire Goniophotometer (Big Size), LPCE-2 (LMS-9000A) High Precision Spectroradiometer Integrating Sphere System, EMI-9KA EMI Receiver System, VVLA-30M Three Loop Antenna and some other equipment.

 

The installation and training last for 3 days. The customer is very enthusiastic and is very satisfied with our service. Here are the photos of the equipment they purchased:

[caption id="attachment_10996" align="alignnone" width="900"] Figure 1: LISUN LPCE-2 (LMS-9000A) High Precision Spectroradiometer Integrating Sphere System[/caption]

[caption id="attachment_10997" align="alignnone" width="900"] Figure 2: LISUN LSG-1700B Rotation Luminaire Goniophotometer (Big Size)[/caption]

[caption id="attachment_10998" align="alignnone" width="900"] Figure 3: LISUN EMI-9KA EMI Receiver System[/caption]

[caption id="attachment_10999" align="alignnone" width="575"] Figure 4: LISUN VVLA-30M Three Loop Antenna[/caption]

LISUN is lead in CFL & LED Test Instruments. Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing,Electronic Ballast Tester, Electrical Safety Testing, Environmental Test Chamber, Plug and Switch Testing, AC and DC Power Supply and etc. Lisun Group wins thousands of customers’ trust with motto “Right Product, Right Price and Right Service”. Please learn more products here: http://www.lisungroup.com/article-id-47.html