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India – Installation and training for LPCE-3 CCD Spectroradiometer Integrating Sphere Compact System

This customer purchased our LPCE-3 CCD Spectroradiometer Integrating Sphere Compact System. They set up a new factory recently and are gradually purchasing LED test equipment. We provided them installation and training services in time, which laid a good foundation for our long-term cooperation. During the installation & training, the customer repeatedly appreciated that our engineers […]

India-Installation and training for LSG-1700B Rotation Luminaire Goniophotometer (Big Size)

This customer is a local luminaries manufacturer, they compared a number of suppliers in China, finally considering the quality of the equipment and after-sales service, chose LISUN. They purchased a set of LSG-1700B  Rotation Luminaire Goniophotometer (Big Size) from us this time. Please learn more about this equipment here: http://www.lisungroup.com/product-id-339.html After receiving the equipment, they […]

LISUN engineer visit Colombia to do installation and training for customer

This is a luminaries manufacture. They purchased a set of LSG-1200A Compact Goniophotometer and a M9822 DC Electronic Load from LISUN this time. This customer is very satisfied with our installation and training service, and praised that “LISUN is very professional!” Thanks for your trust, LISUN would continue offering the best products and the best service in the future. […]

Germany – Installation and training for SC-015 Dustproof Testing Machine and JL-34 & JL-56 Waterproof Test Equipment

This customer is the leading German manufacturer and global supplier of illuminants for emergency lighting, safety luminaires and general-purpose. The main purpose of this trip is to train the old German customer, who has a good reputation in Germany. This customer is LISUN old customer who has purchased the below equipmens from LISUN before: YWX/Q-750  […]

Qatar – LISUN engineer provide installation and training services for LSG-1700B Goniophotometer, YWX/Q-750 Salt Spray Chamber, JL-56 Waterproof Jet Test Device

This customer is well known in Qatar and is the first LED lighting manufacturer in Qatar. The customer first get know about LISUN at the Hong Kong exbihition and discussed some test equipment with our engineer. This trip to Qatar is mainly to install and training LSG-1700B goniophotometer, YWX/Q-750 salt spray tester and JL-56 Waterproof […]

Darkroom Design for a Goniophotometer

As the most important part of the lighting test, the main function of the goniophotometer is to measure the absolute luminous intensity. At the same time, it can measure other parameters such as lumen and illuminance. Because of the different testing principle, compared with the integrating sphere spectroradiometer system, the device is more suitable for the measurement of the […]

Comparative Evaluation between ANSI / IES Standards LM-79-19 and LM-79-08

Spanish version LM-79-19 download: ANSI/IES LM-79-19 Mediciones Fotométricas y Eléctricas de Productos de Iluminación de Estado Sólido (SSL) This article tries to make a comparative evaluation between ANSI/IES LM-79-19 Standard that has replaced ANSI/IES LM-79-08 that deals with the methods approved by ANSI/IES regarding performance, requirements technicians of photometric and electrical parameters of solid state […]

What is color difference SDCM and how to do the measurement?

Color difference is an important indicator of lighting lamps color performance. Color difference is the difference between computer calculation forma and the target standard, calculated by single lighting source, the value is smaller, accuracy is higher. Please note, it only represents the compared color of a light source, it can not detect the deviation under […]

Characteristics of LISUN GDJS series High and Low Temperature Humidity Chamber

LISUN GDJS series High and Low Temperature Humidity Chamber is according to IEC60068-2-1 (GB/T2423.1) and IEC60068-2-2 (GB/T2423.2). It is used to test the CFL/LED which meets IES LM-80-08, electricity products, electronic components, material and so on. There is some other manufacturers in China also produce High and Low Temperature Humidity Chamber, and our equipment is mainly different from the […]

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 […]

IEC 60529(GB4208-2008)IP Protection Grade Waterproof and Dustproof test

IEC 60529 IP code is a coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of water and to give additional information in connection with such protection IP code includes 4 digits, like IP23CH. IP short for ingress protection; numeral 2 […]

Analysis on the Status of Certified LED Bulb in USA Energy Star

Energy Star certification (Energy Star certification) is a certification which can adapt to the requirements of the United States Energy Department. In addition to UL, FCC certification, it is the most popular certification of lighting products to enter the United States market. UL reflects the goods safety performance, FCC reflects the electromagnetic compatibility of products, while […]

LISUN 3M Integrating Sphere Test Results Comparison

Lisun engineers visited Barcelona recently, this visit was mainly to install the 3m Integrating Sphere Test System for the customer and provide training service. This customer compared the test results of Lisun’s 3m Integrating Sphere Test System with the test results of Holophane(HEL) and LIA Laboratories. This customer provided 4 samples to the third lab. Compared with LIA Laboratories, our […]

LISUN Design 3m Electric Integrating Sphere

Summary: Compared with common integrating sphere, the all-new 3m integrating sphere has many improvements. LISUN engineers add the infrared anti-pinch device, the cross laser positioning and adjustable multifunctional holder base in the integrating sphere. The world famous company Sharp Laboratories of America and some other  European companies have purchased the 3m integrating sphere. Here are some […]

LISUN Design 3m Electric Integrating Sphere

Summary: Compared with common integrating sphere, the all-new 3m integrating sphere has many improvements. LISUN engineers add the infrared anti-pinch device, the cross laser positioning and adjustable multifunctional holder base in the integrating sphere. The world famous company Sharp Laboratories of America and some other  European companies have purchased the 3m integrating sphere. Here are some […]

High/Low Temperature & Humidity Test Chamber Analysis in China Market

High/Low temperature & humidity test chamber is used to simulate a actual temperature and humidity environment which it may caused any influence for surrounding objects,due to electronic products widely application in various occasions, in order to design better product which meet relevant environmental standards, the temperature and humidity test has become an necessary test items, […]

Application for IEC 60529(GB4208-1993)IP Protection Grade

IEC 60529 IP code is a coding system to indicate the degrees of protection provided by an enclosure against access to hazardous parts, ingress of solid foreign objects, ingress of water and to give additional information in connection with such protection IP code includes 4 digits, like IP23CH. IP short for ingress protection; numeral 2 […]

Glow wire test

Glow wire test is to test the stability of electrical and electronic products during working. And the hot wire itself is the resistance wire ring with fixed size. When doing test, the wire ring should be heated up to the specified temperature by electricity, so that the time when the top of the wire reached […]

The Status of Integrating Sphere in China Market

IES LM-79 “Electrical and Photometric Measurement of Solid-State Lighting Products” as the exclusive international standard for measuring the total luminous flux, electrical power, luminous intensity distribution and correlated color temperature (CCT), color rendering index (CRI) and other colorimetric parameters of solid-state lighting products (SSL), it highlights the total luminous flux of SSL products should be […]

How to choose the right goniophotometer according to the standard LM-79 and EN13032-1?

How to choose the right goniophotometer according to the standard LM-79 and EN13032-1? There is a wide range of goniophotometers on sale in the market, including central rotation type, rotation mirror type, double mirror type and so on. How to choose the corresponding goniophotometers for the tested lamps becomes the most important problem for the users. This […]

Lumen test difference between integrating sphere and goniophotometer

As well as we know that for the LED luminaires lumen test, the CIE121: 1966 Clause 6.1, CIE127-2007 Clause 6.2 and IES-LM-79-08 Clause 9.0 are mentioned two luminous flux test method: the first is adoption integrating sphere+photometer or spectrometer(recommend by CIE121: 1966 Clause 6.1.1, CIE127-2007 Clause 6.2.and IES-LM-79-08 Clause 9.0), this kind of test method is […]

Improve the accuracy of the LED flux testing in the Sphere

Abstract: According to the particularity of LED luminous flux measurement, unique optimization is adopted in the design of the integrating sphere for LED measurement combined with the diffuse materials of high reflectivity, which makes the system stability and accuracy have great improvement. The experimental results show that the system stability and consistency is much higher than other common […]

Types & Test Methods of Luminaires Goniophotometer

The most critical factor that affects the quality of lighting is the luminous distribution performance of lamps. Using scientific testing methods and selecting the appropriate test instrument is the basis of obtaining accurate luminous distribution properties of luminaires. The test of luminaires’ luminous distribution is an important part of luminaire design and lighting design for […]

EMI Measurement Application and Relative Test Standards

Along with the technical development, more and more digital and high speed electronic and electric devices are widely applied to vary industries. Those equipments push the society developing, and the same time they bring the electromagnetic pollution problem to the society. Electromagnetic pollution, water pollution and air pollution are the three big pollution sources for […]

The Lighting Product EMC Problem and Testing Technology

LEDs and LED luminaires with high light efficiency, longer lifetime, better energy saving and environmental friendly advantages to achieve top position on the lighting industry, like indoor and outdoor lighting application. With the introduction of various national support policies, there appeared many LED lighting products manufacturer, but the quality of LED lighting products is not […]

What are EMC tests?

With the widespread use of electrical and electronic equipment, the problem of electromagnetic disturbance has also brought electromagnetic pollution. EMC(Electro Magnetic Compatibility) refers to the ability of a device or system to operate within its electromagnetic environment without incurring unacceptable electromagnetic interference to any device in its environment. EMC testing, one the one hand refers […]

The classification of EMC

Introduction Electromagnetic Compatibility EMC refers to the ability of a device or system to function properly in its electromagnetic environment and does not constitute an electromagnetic disturbance to anything in the environment. Sensor electromagnetic compatibility refers to the adaptability of the sensor in the electromagnetic environment, maintaining its inherent performance and the ability to perform specified […]

Poland-Installation and training for Integrating Sphere Test System

Recently, a Polish laboratory contacted our company to learn about the LED test inetruments and purchased a set of LPCE-2 High Precision Spectroradiometer Integrating Sphere System. They are a luminaries manufacturer in Poland. Their previous integrating sphere test system was not working well, so buy new instruments from LISUN now. By comparing quality, price, after-sales service, […]

Brazil – Installation and training for Integrating Sphere Test System and Goniophotometer

The Brazilian customer found LISUN brand and contacted us when they learned about the LED test instruments on the website. They just set up a new factory, and one of their friends has bought our equipment before. They finally purchased the CH338 Digital Torsion Meter, LPCE-2 High Precision Spectroradiometer Integrating Sphere System and LSG-1700B High Precision Rotation Luminaire Goniophotometer. […]