LED luminaries consist of LED power driver, single LEDs and fixtures, which the LED power driver is like the heart of human, so it is the key part. Since the LED is sensitive semiconductor device and also has the negative temperature characteristics, it needs to be applied in steady state operation and protection in the application, resulting in a drive concept. LED devices is strict with LED powe...
LED manufacturers must learn some basic luminaries’ parameters such as brightness, spectrum and color temperature and so on as standard to identify pros and cons. We will introduce following LED lighting products normal parameters and tell you how to design and improve LED lighting products. 1、Brightness/Luminance Brightness/luminance L: Luminance is the luminous flux per Unit solid angle per ...
As the basic test equipment to measure LED luminaries or other lighting product’s performance, the photometer & integrating sphere system has been used at lighting industry for many years. The first generation test instrument is photometer, then single-monochromator spectrocolorimeter, double- monochromator spectrocolorimeter and developed array CCD spectroradiometer in now days, the lightin...
IEC/EN 62471 is to assess relative optical radiation safety of different lamps and lamp system. It fully replaces IEC/EN60825 regarding the requirements of LED products energy level and adds the requirements of photobiological, including spectral irradiance and spectral radiance. According to the test data, it classify the hazard level of the products, including exemption level, low hazard level, ...
Due to the LED light source manufacturing technology development, widely application layer surface, so in order to ensuring the safety of consumers, UL established UL8750 for LED module and lighting lamps and lanterns and safety standards to regulate the LED lighting products. This standard is the industry sales LED products to North America essential safety norms, apply to the LED as the main sou...
At the end of October 2016, Lisun attended lighting fair in as in previous years. Hongkong International Lighting Fair has been an ideal platform for LED industry to promote the latest lighting products. With the continuous expansion of the scale, growing reputation, Hongkong Lighting Fair has become one of the most prestigious professional lighting exhibition in Asia. During the exhibition，Lisu...
In October 5th-7th 2016, New Delhi LED lighting exhibition held in New Delhi, the capital of India. As one of India’s largest LED lighting exhibition, New Delhi LED lighting exhibition displays different lighting solutions, including LED chips, LED lamps, LED package, intelligent building lighting design and LED test equipment, etc.. In order to do better serve for customers in India, Lisun Indi...
LED power driver is one of the key parts of LED luminaries, the performance of the driver will greatly affect the product quality. The lower driver efficiency, the lower efficiency conversion ratio, this is not only influence the product quality, and also will bring the heat dissipation problem. The driver failure is the important factor to affect the LED life. Now the power driver is the reason c...
SSL (Solid State Lighting) product’s color quality is very important; people pay more and more attention to it. CRI already has 40 years history. CIR is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source, which is color fidelity degree. There are many problems when CRI is applied in LED at...
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