Russia- Installation and training for Integrating Sphere Test System

Recently, there is a Russian customer who purchased the LPCE-2 (LMS-9000A) High Precision Spectroradiometer Integrating Sphere System from LISUN. This customer is a relatively large local luminaries manufacturer, just built a new laboratory and was perfecting the test equipment.

The installation & training lasted one day. Before our engineer arrive there, they had already connected the lines according to the user’s manual. Below is a picture of customer training:

[caption id="attachment_11242" align="alignnone" width="900"] Figure 1: LISUN LPCE-2（LMS-9000A） High Precision Spectroradiometer Integrating Sphere System[/caption]

[caption id="attachment_11241" align="alignnone" width="900"] Figure 2: Group photo in front of LISUN LPCE-2 High Precision Spectroradiometer Integrating Sphere System[/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.

Waterproof Test Equipment Analysis in China Market

Waterproof Test Equipment Analysis in China Market

Waterproof grade reflects the ability of moisture-proof of products. Especially for outdoor activities, it is unavoidable to be in the harsh environment of high humidity. The sealing and water-proof ability of the instrument is very important to ensure the safe of operation and life of the instrument.

At present, there are many manufacturers producing waterproofing equipment on the market. What are the advantages of LISUN waterproof equipment compared with other manufacturers? There are some advantages for LISUN waterproof in below:

1. On the side of excellent cost performance, In test equipment market, the quality of LISUN waterproof equipment is good than the waterproof equipment of most of suppliers. Please kindly see Figure 1 and Figure 2. Besides, the price of LISUN waterproof test equipment is very competitive in market. Right price with good quality is cost-effective products for our customer to make a good choice for test equipment. Compare to Figure 2, visibly, the surface of material of LISUN waterproof equipment in Figure 1 (LISUN Model:JL-34) has high gloss. And the surface of material in Figure 2 (Other supplier’s Model) have poor gloss. Good material with high gloss makes the equipment more beautiful visually. Regarding to choosing material, LISUN use SUS304 stainless steel as raw material. One more, the regulator in Figure 1 (LISUN Model JL-34) is much better than the regulator in Figure 2.

[caption id="attachment_11190" align="alignnone" width="300"] Figure 1: Surface of IPX3-IPX4 (LISUN Model:JL-34)[/caption]

[caption id="attachment_11191" align="alignnone" width="329"] Figure 2: Surface of IPX3-IPX4 (Other Supplier’s Model)[/caption]

2. Speaking of structure of IPX3-IPX4, please kindly see Figure 3 and Figure 4 in below. The waterproof test equipment in Figure 3 (Other supplier’s Model) is Wall-Hanging Split Type, but the waterproof test equipment in Figure 4 (LISUN Mode: JL-34) is Two Cabinets Type. Compare to Wall-Hanging Split Type, two cabinets type is easy to carry. Besides, the cabinets of LISUN model JL-34 can be mounted wheels at the bottom, which is more easier for operator to carry and adjust placement.

[caption id="attachment_11192" align="alignnone" width="296"] Figure 3: Wall-Hanging Split Type IPX3-IPX4 test equipment (Other supplier’s Model)[/caption]

[caption id="attachment_11193" align="alignnone" width="197"] Figure 4: Two Cabinets Type IPX3-IPX4 test equipment (LISUN Model:JL-34)[/caption]

3. With the view of production details for waterproof test equipment, we can see many welded junctions in Figure 5 and Figure 6(Other supplier’s Model), which not only affects appearance, but also makes it easier for water to erode equipment. please kindly see Figure 5 & Figure 6 & Figure 7 in below. In Figure 7(LISUN Model: JL-34), we can see that the surface of the equipment is clean and glossy, and there is no welded junction.

[caption id="attachment_11194" align="alignnone" width="316"] Figure 5: Production details (Other supplier’s Model)[/caption]

[caption id="attachment_11195" align="alignnone" width="323"] Figure 6: Production details (Other supplier’s Model)[/caption]

[caption id="attachment_11196" align="alignnone" width="231"] Figure 7: Production details (LISUN Model:JL-34)[/caption]

4. Speaking of turntable, we can easily judge the good or bad quality of turntable by through below Figure 8 and Figure 9. After waterproof test equipment is used for a long time, in below Figure 8 (Other supplier’s Model), we can find many rust spots on the machine. In below Figure 9(LISUN Model:JL-34), there is no rust spot on that machine. Thus it can be seen good material can make machine have good corrosion resistance and durability. The turntable of LISUN model JL-34 also mounted wheels at the bottom. This is also more convenient for the operator to move the turntable.

[caption id="attachment_11197" align="alignnone" width="281"] Figure 8: Turntable of IPX3-IPX4 (Other supplier’s Model)[/caption]

[caption id="attachment_11198" align="alignnone" width="220"] Figure 9: Turntable of IPX3-IPX4 (LISUN Model:JL-34)[/caption]

5. For swing pipe and spray nozzle for IPX3 and IPX4, compare to Figure 10, the quality of swing pipe and spray nozzle in Figure 11 is better and more elaborate .which also make operator control water flow accurately, and Good parts can make the equipment be used for long term.

[caption id="attachment_11199" align="alignnone" width="260"] Figure 10: IPX3-IPX4 Swing pipe and spray nozzle (Other supplier’s Model)[/caption]

[caption id="attachment_11200" align="alignnone" width="268"] Figure 11: IPX3-IPX4 Swing pipe and spray nozzle (LISUN Model:JL-34)[/caption]

6. Regarding to wire of waterproof, please kindly see Figure 12 and Figure 13 in below. Wire is exposing outside of equipment in Figure 12 (Other supplier’s Model). If operator use the machine for a long time in damp environment, that will be easy to make safety issue. So such design for waterproof equipment is not safe for operator. In Figure 13 (LISUN Model: JL-34), Wires are wrapped in plastic pipes, in that way, it can protect operator when operator use equipment. From a safety point of view, LISUN Model is also much better.

[caption id="attachment_11201" align="alignnone" width="293"] Figure 12: Wire of IPX3-IPX4 (Other supplier’s Model)[/caption]

[caption id="attachment_11202" align="alignnone" width="181"] Figure 13: Wire of IPX3-IPX4 (LISUN Model:JL-34)[/caption]

In all, before purchasing waterproof test equipment, please consider from different sides. Through the above comparisons, we believe that LISUN waterproof test equipment will be your best choice.

 

Photoelectric color performance detection of LED lights

 Photoelectric color performance detection of LED lights

The main parameters of the photoelectric color performance of LED lamps include: lamp power, power factor, luminous flux, output luminous efficiency, luminous flux maintenance rate, correlated color temperature, color rendering index, chromaticity tolerance, color coordinates, and beam of reflective cup MR16 or PAR lamp. Angle, light intensity and light intensity maintenance rate.

(1) The integrating sphere system with auxiliary lamps can quickly measure all of these photoelectric color performance parameters of the LED lamp. First place the LED light in the center of the integrating sphere, and test it with the illuminated auxiliary light when the LED is not lit. The auxiliary lamp is turned off and the LED lamp under test is turned on. After the test is stabilized, the color characteristic parameter of the lamp to be tested is obtained, and the luminous flux of the LED lamp under test is automatically calculated by software. If the auxiliary ball is not equipped with an auxiliary lamp, the LED lamp body itself will absorb part of the reflected light, and there will be some error in the luminous flux value. At the same time, the inner wall of the integrating sphere should also have a high reflectivity: 90%~98%. At present, most of the detection mechanism of the integrating sphere system has no auxiliary lamps, and the reflectivity of the inner wall of the integrating sphere is less than 90%. These integrating sphere systems cannot accurately measure the luminous flux of the LED lamps.

(2) The luminous flux of the LED lamp can also be measured by a distributed photometer. When testing, the γ angle range should be 180°, and the center of the lamp coincides with the center of the mechanical axis. The downside is that the test time is too long.

(3) The beam angle and light intensity of the reflector type MR16 or PAR lamp can be measured by a small bedroom distribution photometer. When testing, the mechanical and optical axes must be the same. The disadvantage is that the test posture is abnormal, and the test results need to be corrected.

LISUN will visit India to attend the New Delhi Lighting Fair in October 2018

LISUN  will visit India to attend the New Delhi Lighting Fair in October 2018

LISUN has participated in this India lighting exhibition for four years and has developed a large market in India. We will continue to participate in the New Delhi Lighting Fair in October this year. We will then inform everyone LISUN booth number and welcome to our booth! We would prepare gifts for you.

This is one of the most influential exhibition for professional lighting products and technology. It involving residential lighting, commercial lighting, landscape lighting and so on. Since its launch in 2009, LED Expo was held in New Delhi and Mumbai. Both of the scale of exhibition and the number of exhibitors are increasing year by year. LED Expo Delhi enjoys high praise among the industry.

LISUN have some DEMO test instruments will be sold after the exhibition.
1. Gonoiphtometer (LSG-1700B): https://www.lisungroup.com/product-id-339.html
2. Integrating Sphere and Spectroradiometer system for LED (LPCE-3): https://www.lisungroup.com/product-id-394.html
3. Surge Generator - 10KV (SG61000-5H-SP): https://www.lisungroup.com/product-id-254.html
4. Pulse Withstanding Voltage Tester -12KV (SUG255PX): https://www.lisungroup.com/product-id-342.html
5. EMI Test System (EMI-9KA): https://www.lisungroup.com/product-id-331.html
6. LED Driver Tester (WT2080): http://www.lisungroup.com/product-id-326.html
7. Portable CCD Spectroradiometer (LMS-6000): https://www.lisungroup.com/product-id-448.html

We have only one set above system, if you are intrest, please kindly contact with by Phone(Also What’sAPP): +86 189 1799 6096, or email: Sales@lisungroup.com, or Skype: lisungroup2003.

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.