The ideal integrating sphere paint should have below performances: 1. High-Lambert characteristics (good diffuse reflection characteristics) 2. High reflectance in a wide wavelength range 3. High stability 4. Easy construction 5. Easy to remove The history of integrating sphere coating: In 1934, Principle of Optics mentioned the description of principle of integrating sphere and the formulations o...
According to IESNA-LM-79-80, when spectroradiometer integrating sphere system tests LED flux, light source’s self-absorption can influence test result, therefore, it usually introduces Auxiliary Lamp. The induction of absorption Auxiliary Lamp can solve the absorption problem of the tested lamp itself. How to use Auxiliary Lamp correctly? Lisun LPCE-2(LMS-9000A) High precision Spectroradiomet...
Goniophotometer measures 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-6000 LM-79 Type C Mirror Goniophotometer System. Ac...
As far as we known that there have several type spectroradiometer, such as CCD spectroradiometer, mechanical scanning spectrophotometer etc. Generally, the type of spectrometer depend on what’s kind of lamp will be test, because the spectrometer is designed according to light-emitting characteristics. There have two kind of spectrometer in the market: one is Fast CCD Spectroradiometer; another i...
As we known that the quality of LED products depend on lumen, lumen efficiency temperature and CRI etc parameters, the general test device is application with spectroradiometer & integrating sphere system to measuring electrical, photometric and colorimetric parameters. This system mainly testing lumen, CCT, CRI, spectrum, SDCM, voltage, current, power and power factor etc. As general test dev...
USA Environmental Protection Agency(EPA) and Department of Energy(DOE) successively released Energy Star and Lighting Facts Standards for LED Luminaires/Bulb from 2010, which makes relevant industry persons have LED Lighting products standard to follow. At present, international LED large manufacturers for LED product Life evaluation and product specification are also on this basis. That is to sa...
The equipment for electrical safety performance test is in rapid development of modern science technology; all kinds of electrical and electronic equipment are into all fields of social life and become an important symbol of social civilization and progress. All kinds of electrical appliances and electronic equipment are used in both urban and rural areas and have rapid popularization, which br...
The best way to test electric and electronic products’ fire hazard, is truly to reproduce the actual existence of conditions, but it is impossible in the most cases. Therefore, according to the current situation, it’s better to simulate the actual effects for electric and electronic products’ fire hazard test. Needle Flame Test, is used to simulate the fault conditions generated by a small f...
Due to the quality of LED Driver directly determines the life of the LED lamp, now more and more customers pay great attention to LED Driver testing. In order to meet IEC 62384:2006 and GB/T 24825-2009 standards, Lisun designed the following several products: 1. ATE-2 LED Driver Automatic Test System It is suitable for LED lighting companies who are very demanding on LED driver. It can test the i...
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