LED光强分布测试仪研制

JIMI

论文编号:WLX012  字数:5531,页数:14摘     要  本论文涉及一个LED光强分布测试仪的研制。测试仪的主要组成装置为：恒流装置LED、光电探测器、电压放大器和测量仪器。 当正向电流及环境条件一定（普通环境影响甚小）的情况下，LED在恒流源的驱动下稳定发光，接着光电探测器把感应到的光信号转换为微弱的电信号（即光电传感器产生的光生电压），并经由电压放大电路把微弱的电信号放大，然后从测量仪器中输出并获得数据，最后通过采集的大量有效数据分析LED的光强分布特性。 关键词：  发光二极管  发光强度  光强分布  电压放大  数据分析 Abstract This paper deals with the development of a LED Light Intensity Distribution Tester. This group is mainly composed by Constant-current Device LED,Photodevice,Voltage Amplifier and Measuring Instrument. When in the situation of having fixed the forward current and the environmental conditions (general environmental impact is very small), LED is driven with the current source of stable luminescence.And then the photoelectric detector puts the optical signal into a weak signal (that is the photo-voltage caused by photoelectric sensor),meanwhile to enlarge the weak signal by the voltage amplifier and to access to data from the measuring instrument,finally to analyze the LED light intensity distribution through the large number of effective data analysis. Keywords：LED;Lllumination Intensity; Intensity Distribution; Voltage Amplification; Data Analysis目  录中文摘要 i英文摘要 ii目录 iii第一章     前言 1第二章     LED光强分布测试仪的研制 22.1   原理 2.1.1  LED工作原理与基本特性 2.1.2  光敏三极管工作原理与基本特性       2.2  设计电路图           2.2.1   电路图           2.2.2   设计思路  2.3  测试           2.3.1   实验数据           2.3.2   数据分析  2.3.3   误差分析 第三章     结论 9致谢 10参考文献 11