摘要
提出对光电传感器使用的发光二极管进行光轴测量的必要性，并采用面积加权法对其进行测量。得到芯片位置变化及芯片加载电流变化对光轴位置的影响。
The necessity of measuring optical axis of LED for photoelectric sensor is introducedand the measurement of the optical axis with area weighted methed is done。 Finally,the optical axisplace affected by chip seat change and loading current change is obtained.
关键词
发光二极管
光轴
测量
光电传感器
light emitting diode
optical axis
centre of light emitting area
measurement
