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 different light sources. Generally sp...
This page is a brief introduction and description for conducted immunity testing which based on IEC 61000-4-4 fast transient burst test, IEC 61000-4-5 lightning surge test, IEC 61000-4-11 voltage cycle drop test and IEC 61000-4-12 ring wave test. IEC 61000-4-4 establishes a common and reproducible reference for evaluating the immunity of electrical and electronic equipment when subjected t...
LED luminaires are this kind of device which can transmit, distribute, and change the light distribution of light source. They are becoming the main products of a new generation of lighting market with its high efficiency, energy saving, safety, long service life, compact, and other technical characteristics. They effectively promote energy-saving environmental protection industry of high-speed d...
Compare LED efficiency and life, the conception of efficiency is more complex. Firstly, there are three kinds of general efficiency, please check the Diagram 1. Luminous Efficiency(lm/W) Conversion Efficiency lamp beads Connect lamp beads to DC power source directly, the rate of lamp beads flux and consumption power Connect lamp beads to DC power source directly, the rate of light powe...
In China, cars are becoming more and more popular. With the development of automobile industry, automotive lights are also developing. Automobile lights have experienced Incandescent Light, Halogen Light and HID(High-Intensity Discharge) Light, to the current era of Automotive LED Light. Automotive LED Light has many advantages: Energy-saving and Environmental Protection: LED directly converts po...
From the perspective of the LED product structure and technology development, the quality criteria of LED product mainly consider the parameters of the optical properties, electrical properties, thermal properties, radiation safety and life. LED optical properties mainly involve luminous flux, radiation flux, luminous efficiency, chromaticity coordinates, correlated color temperature, color render...
“Bright blind” in life is an exaggerated description of some impact incidents, but if it is used for the LED lighting industry, then it is the quality problems of LED lamp itself. And “strobe” is likely the initiator to lead to “blind”. Many people are not very clear about the concept of strobe, and even don’t care about its harm. Regarding the hazard of strobe, experts have given t...
Many customers need aging LED lamps, but do not have a clear concept of aging test and life test. Aging test usually use aging test racks. What is aging test rack? Aging rack is dedicated to simulate the products in real conditions involved in the use of various factors on the aging of the product conditions to strengthen the process of the corresponding conditions. Why we need aging test? Electro...
The International Electrotechnical Commission (IEC) has published IEC 61000-4-5:2014, “Electromagnetic Compatibility (EMC) – Part 4-5: Testing and Measurement Techniques – Surge Immunity Test.” “IEC 61000-4-5:2014 relates to the immunity requirements, test methods and range of recommended test levels for equipment with regard to unidirectional surges caused by over-voltages from switch...
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