UL LM82 测试介绍.pdfVIP

UL Verification Services LM-82 简介 演讲：Jerry.mai@ © 2011 Underwriters Laboratories Inc. Background 北美照明工程协会（IESNA）近日出版LM-82-12标准测试方 法。 • 这个标准有什么作用？ • 跟之前的LM-79的关系？ 2 简介 • LM-82-12标准测试方法： • 认可的测试标准：“Characterization of LED Light Engines and LED Lamps for Electrical and Photometric Properties as a Function of Temperature.” • 该测试方法用于测试工作状态下LED光引擎和LED灯泡的电 气、光学特性与温度的关系。 3 简介 • The new standard is designed to establish consistent methods of testing and data presentation to assist luminaire manufacturers in selecting LED light engines and integrated lamps for their luminaire products. • 新标准为产商提供了统一的测试方法，帮助灯具制造商挑 选LED光引擎和集成灯泡。 4 目的 • “The thermal environment near the LED is altered by both the luminaire design and the application environment. By measuring the performance characteristics at various temperatures the luminaire manufacturer can model the expected light output of a given luminaire design, including those for decorative lighting and non-directional applications,” said Rita Harrold, director of technology at the IESNA. • 北美照明工程协会的Rita Harrold表示：“LED周围的热 环境受灯具的设计和应用环境能影响。通过测量不同温度 下LED光引擎的电气、光学参数，制造商能够使某既定设 计的光输出达到预期。这些灯具包括装饰灯和非定向灯在 内的产品” 5 LM-82 与LM-79 • The new standard references LM-79 for all photometric and electrical measurements, but with the measurements performed at elevated temperatures. Therefore, LM-82 can be viewed as essentially the LM- 79 standard procedures, but with that characterization extended to include any performance degradation of LED light engines and integral lamps that might occur at elevated temper