U.S.-Customers install LSG-1700B large horizontal goniophotometer by watching the video

This customer is the largest manufacturer of LED utility lights and LED street lights in the United States. The company has a professional after-sales service team. The company's purpose is not to get more customers at low prices, but to win the favor of many customers with high-quality products and professional after-sales service. Mainly produce LED street lights, LED street lights and LED area lights.

This customer made an inquiry for our company's LSG-1700B large-scale horizontal goniophotometer through the website several years ago. Later, when our company went to the local exhibition. After the customer learned about some technical issues with our engineers at the exhibition. After the exhibition, the customer quickly placed an order and paid it to our company. We arranged production as soon as we receive the customer's order. We quickly confirmed the darkroom size with the customer, and our engineers designed the darkroom drawings for the customer according to the customer's darkroom size.

While we were producing the equipment, customers were decorating dark rooms. Due to the epidemic, our engineers cannot go to the local area to do installation training for customers. However, Lisun was fully prepared to face the impact of the epidemic. Lisun's engineers personally installed and operated each device in the laboratory and recorded it into video. After the customer received our order, we immediately sent the installation video to the customer. After carefully watching our installation video several times, the customer began to follow the video step by step to complete the installation and successfully tested and used it. After the test, the customer was very satisfied with our installation video. The following pictures are the darkroom pictures before and after installation provided by the customer:

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Surge Generator, EMC Test Systems, ESD Simulator, EMI Test Receiver, Electrical Safety Tester, Integrating Sphere, Temperature Chamber, Salt Spray Test, Environmental Test Chamber, LED Test Instruments, CFL Test Instruments, Spectroradiometer, Waterproof Test Equipment, Plug and Switch Testing, AC and DC Power Supply.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp:+8618917996096

How To Build The Darkroom For Goniophotometer?

Goniophotometer is mainly used for light intensity performance measurement of luminaries and light source, which is the photometry value in different directions in space and color distribution. Goniophotometer should run in dark room, and what are the requirements for the test environment?

The size requirements for dark room: for example, such as LISUN LSG-5000 LM-79 Type C Mirror Goniophotometer System. According to CIE requirement, dark room consists of 2 parts, the recommended size of the dark room for Goniometric Rotating Console is W5.0m*L5.0m*H5.9m;  the recommended size of the dark room for Photometric Light Path is W1.5m*H1.5m*L(15m – 30m). According to the requirements of CIE, the recommended distance between lamp and photo detector is 6 times than the diameter of lamp. The recommended size of operating room is no less than W3m*L3m. LISUN GROUP engineer dept will submit the Lab Design support documents according to the customer’s real lab size after the formal purchase order was confirmed.

Requirements of eliminating the stray light: the photodetector can only receive the light reflected by the rotating mirror in the LSG-5000 system. The light given off directly by the luminaries and reflected by the wall and floor is warded off by the light fence. Internal surface of the dark room and dark path together with the surface of the light fence should be painted unpolished black or be covered by black cloth and black carpet.

Temperature of the Environment: Because of the thermal performance of LED, the photometric value and electronic performance of SSL products are sensitive to the change of temperature and air movement. Temperature around the lamp or luminaries must be 25℃±1℃ during the test. The temperature should be measured in the distance that is no more than 1m, and measurement height should be the same with the SSL product. Temperature sensor should avoid the direct optical radiation of SSL product and other light source. Therefore, you should place an air conditioner in the dark room to control the temperature around the lamp to reach the temperature requirement of CIE. If the measurement is not doing under the recommended temperature, this is a non-standard condition, which should be remarked in the test report.

Requirements of Airflow: Airflow may be induced by natural aeration, air conditioner or movement of the luminaries in the goniophotometer, but the speed of the airflow couldn’t exceed 0.2m/s. The airflow of the tested lamp surface may greatly change the electric value and photometric value. The testing personnel must not enter the dark room during the test.

Vibration and shock: When the lamp is in lighting, the vibration couldn’t exceed 10m/s2(4～3000Hz), or the moving scope of the lamp couldn’t exceed 30mm (at most 4Hz).

Smoke, Dust and Moisture: The test environment must free from smoke, dust or moisture. At the same time, even not during the measurement, smoke, dust or moisture will also influence the reflectance of the reflecting mirror and induce more stray light. So, the test room must be kept clean, no smoke and dry. The humidity should be less than 60% RH.

LISUN has many different types of goniophotometers. Pleae click to view the different darkrooms for different goniophotometers.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Spectroradiometer, Integrating Sphere, LED Test Instruments, CFL Test Instruments, Photometer and Colorimeter, EMC & EMI Testing, Surge Generator, Electrical Safety Testing, Environmental Test Chamber, Waterproof Test , Dustproof Test Chamber, High and Low temperature Humidity Chamber, Plug and Switch Testing, AC and DC Power Supply.

Please feel free to contact us if you need any support.
Tech Dep: Service@Lisungroup.com, Cell/WhatsApp:+8615317907381
Sales Dep: Sales@Lisungroup.com, Cell/WhatsApp:+8618917996096