India– installation and training for LSG-1700B goniophotometer & LSG-3000B goniophotometer

This trip to India is different from the past, and this time we are going to do installation training for a first-class university in India. The University was founded in 1955. As a foremost Indian University with a vast repertoire of courses offered, an enviable list of faculty members and has come to be known for its commitment towards advanced study and research. The school purchases LSG-1700B Rotation Luminaire Goniophotometer (Big Size) and LSG-3000B Moving Detector Goniophotometer.

The school only bought LSG-1700B Rotation Luminaire Goniophotometer (Big Size) before. After they received LSG-1700B goniophotometer, they think the quality of the machine is very good. So they also decided to buy Moving Detector Goniophotometer LSG-3000B for their school. The school received our engineers from Lishan very enthusiastically. Our engineers also provided the school with detailed installation and training. In addition, the school engineers also exchanged a lot of test equipment knowledge with our engineers and learned a lot from each other. This trip to India is very meaningful.Here are some photos from our customers:

[caption id="attachment_11088" align="alignnone" width="900"] Picture 1. LSG-1700B Rotation Luminaire Goniophotometer (Big Size)[/caption]

[caption id="attachment_11089" align="alignnone" width="900"] Picture 2. LSG-1700B Rotation Luminaire Goniophotometer (Big Size)[/caption]

[caption id="attachment_11090" align="alignnone" width="768"] Picture 3. LSG-3000B Moving Detector Goniophotometer[/caption]

[caption id="attachment_11091" align="alignnone" width="768"] Picture 4. LSG-3000B Moving Detector Goniophotometer[/caption]

Lisun Group 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.

Brief introduction of CE certificates

Brief introduction of CE certificates

In recent years, the CE marks are more and more widely used in the market of European economic area (Member states of the European Union and the European Free Trade association, except Switzerland). More customs of different countries set out the requirements of CE certification for imported products. Exporter will be in trouble as well as unnecessary loss if their shipping goods don't have CE certified label. So, what is the importance of CE certification? What are the forms of CE certification so far? And what are the risks of products that has not been certified by CE?

1. The importance of CE certification
The CE mark on the packaging indicates that it meets the requirements of a series of European directives such as safety, sanitation, environmental protection and consumer protection. In the past, EC(European
Community)countries require differently for import and sale of products. The goods which are produced according to national standards may not be on the market. As part of the efforts to eliminate trade barriers, CE came into being at that time. Therefore, CE can be understood as CONFORMITY WITH EUROPEAN (DEMAND) (in Europe).

The meaning of the CE mark is as the following: Using CE acronym as symbol shows products which affix the CE mark meet the main requirements of relevant provisions of the European Directive (Essential Requirements),and it's also used to verify that the products have passed the conformity assessment procedure or the manufacturer's declaration of conformity. The CE mark is truly as a passport for the products being allowed to enter the European market. For industrial products which must affix CE mark according to relevant instructions, they can be in the market without CE mark, or they must be taken back if they don't meet safety requirements but with CE mark and in the market. For industrial products which must affix CE mark according to relevant instructions, they can be in the market without CE mark, or they must be taken back if they don't meet safety requirements but with CE mark and in the market. Moreover, the products will be restricted and prohibited from entering the EU market or forced to withdraw from the market if they violate CE mark instructions in European Directive.
The most important function of CE is to ensure the safety of the products and ensure the products work well under the conditions of the European union. CE mark like a tickets for products entering the European market, if products are not certified by CE, it's most likely to be seized of by European customs and cause exporters’ unnecessary losses.

2. Advantages of CE certification
The import of CE certified electronic instruments and equipment can effectively avoid the following risks:
 The risk of being detained and investigated by the customs;
 The risk of being investigated and dealt with by the market supervision institution;
 The risk of being charged by competitor for other purpose;

The import of CE certified electronic instruments and equipment has the following advantages:
 The import of CE certified equipment can avoid a lot of trouble in the import and export because the laws, regulations as well as standards of EU are not only numerous, but also very complex;
 It can enhance the reliability of their product performance by using CE certified equipment for testing or production. It also can effectively prevent the emergence of irresponsible allegations;
 The CE certificate of the institution designated by European Union will be the important evidence with legal effect when you are facing to litigation;

For electronic equipment and testing equipment, there is a very important parameter " EMC test" when the products are doing CE certification. Because the power grid frequency, voltage in Europe countries are differen from China Mainland, these products are likely to be damaged in the course of use if not detected. At the same time, there are many interference factors such as pulse group, lightning surge interference, voltage dip and so on. If there is no CE certification, the equipment is likely to be damaged and can't be used normally.

3. Current forms of CE certification in China mainland
At present, there are three kinds of domestic CE certification as following:

A：Only certified certificate, no test report:
This type of certificate is almost invalid and cannot be queried on the appropriate website. Products with this certification mark can't be recognized as ticket to the European market. Products with this kind of certificate is equivalent to the product without CE mark, and they should be detained or even returned.
B: Certificate of compliance / Certificate of compliance, with test report:
This type of certificate is issued as a statement of conformity by the third party Agency (agency or test certification body). The test reports and other technical documents TCF should be enclosed by this kind of certificate. At the same time, enterprises also have to sign the<declaration of conformity>. This type of certification report is only recognized in mainland China. Although there are the test report and related certificates according to the requirement, the relevant information can only be checked on the detection of the company's own website. But many such testing company themself do not comply with EU certification requirements. The certificate is only applicable to the manufacturer for product quality self inspection, there is also a greater risk of being detained by the customs ana cause fines and delivery delays. This will affect the normal use of products. This kind f certificate is shown in the following figure :

C: EC Attestation of conformity < EU standard compliance certificate >
This type of certificate is issued by the EU notified body (Notified Body known as NB). According to EU regulations, only the NB are eligible to issue EC Type CE Declaration.
This type of certificate and test report are issued by testing organization certified by EU. The products finish the complete testing during the certification process and has a complete test report. Meanwhile, certificate No. can be found in the appropriate Website. Only these electronic equipment which has finished the testing and certification can be exported to EU and can get CE label. All of Lisun series devices do CE certification in such bodies certified by European Union, and has integrated <EU standard compliance certificate> and corresponding test report. Certificate template is shown in the following figure:
Lisun is lead in designing and producing high quality, high precision, high performance products to Europe and customers from all over the world. Lisun applied the first CE certification at the beginning of entering the European market and provide long-term excellent quality services for European customers. When the CE certificate expires, Lisun immediately contact the top certification bodies to do

LED packaging principle

LED packaging principle

LED package is mainly to provide a platform for LED chips, so that LED chips have better performance of light, electricity and heat. Good packaging can make LEDs have better luminous efficiency and good heat dissipation environment, and good heat dissipation environment can enhance LEDs. The service life. LED packaging technology is mainly built on five main considerations, namely optical extraction efficiency, thermal resistance, power dissipation, reliability and cost performance (Lm/$).

There are many kinds of LED chip packages, and different styles of packages should be used according to the actual photoelectric characteristics. However, the common LED packages have the following five common patterns.

First, the LED chip soft package, this package style is generally used in the LED display of character display, digital display, and electric display. The soft package of the LED chip is to directly bond the LED chip on the PCB printing plate, and connect the desired characters and display effects through the welding wire. These chips and wire bonds are then protected with a transparent resin.

Second, the pin packing method. The main advantage of this kind of package is that it can flexibly control the angle of light emitted by the LED chip, and it can also easily realize the function of measuring light. The pin package method only needs to fix the chip on the lead frame and then encapsulate it with epoxy resin. Can be a single LED device.

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