CAJ | 학술논문

使用自主构建的简易装置测量了发光二极管的光谱曲线、光强分布、调制带宽．随着L ED工作电流的增加，LED总发光功率减少，峰值波长向长波方向移动．LED的光强分布呈椭圆对称分布，近似符合朗伯光源定律．LED的调制带宽约为100 kHz ，调制特性曲线呈下降趋势．通过该实验学生加深了对辐射学、光度学、光电检测基本概念和方法的理解．
사용자주구건적간역장치측량료발광이겁관적광보곡선、광강분포、조제대관．수착L ED공작전류적증가，LED총발광공솔감소，봉치파장향장파방향이동．LED적광강분포정타원대칭분포，근사부합랑백광원정률．LED적조제대관약위100 kHz ，조제특성곡선정하강추세．통과해실험학생가심료대복사학、광도학、광전검측기본개념화방법적리해．
An experiment of the photoelectric characteristic of light emitting diode (LED) was de-signed to measure spectral curve ,intensity distribution and modulation bandwidth .When the working current increased ,the total luminescent power of LED decreased ,and the peak wavelength moved to long wavelength .Intensity distribution manifested as elliptical symmetry ,and was approximately in accordance with the Lambert law .The modulating bandwidth was about 100 kHz ,and the modulating curve appeared downtrend .The experiment could deepen students’ understanding about the funda-mental conception and method of radiology ,photometry and photoelectric detection .