• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Fourth International Conference on Solid State Lighting >Rapid Photo-goniometric Technique for LED Emission Characterization
【24h】

Rapid Photo-goniometric Technique for LED Emission Characterization

机译：用于LED发射特性的快速光电测角技术

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The emission characteristics of different LEDs are measured using an optical Fourier transform instrument originally designed for flat panel display characterization. In this approach all the light coming from the device is collected by a dedicated optics and imaged on a CCD sensor. The angular aperture of the instrument extends up to +-88°and all the azimuths for 0 to 360° are collected at the same time. The angular resolution is better than 0.5°. The luminous intensity and the color are measured rapidly and accurately. A large measurement spot size (～2 mm) ensures to get all the emission of the device at the same time. It avoids any error and alignment requirements are reduced. In addition to get the luminous intensity distribution very accurately, we have noticed in some cases a dependence of the spectral emission with the angles. This dependence depends on the working conditions of the devices and in particular of the current injected in the LED. Polarization analysis of light emitted by different laser diodes is also presented.
机译：使用最初设计用于平板显示器表征的光学傅立叶变换仪器测量不同LED的发射特性。在这种方法中，来自设备的所有光都由专用光学器件收集并成像在CCD传感器上。仪器的角孔径可扩展到+ -88°，并且可同时收集0至360°的所有方位角。角分辨率优于0.5°。快速准确地测量发光强度和颜色。较大的测量光斑尺寸（〜2 mm）可确保同时获得设备的所有发射光。它避免了任何错误，并且减少了对齐要求。除了非常准确地获得发光强度分布外，我们还注意到在某些情况下光谱发射与角度之间的相关性。这种依赖性取决于装置的工作条件，尤其取决于注入LED的电流。还介绍了不同激光二极管发出的光的偏振分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号