【摘要】 本文描述了用于装配电子枪时控制阴极与第一栅极间距的光纤传感器的结构及其测量系统.传感器的测量范围为10～160μm,精度可达3.8%.讨论了影响传感器特性的若干因素,如制作工艺、表面粗糙度、倾斜度、环境温度和LED的光谱特性.更多还原

【Abstract】 The construction and measurement system of fiber-optic sensor for monitoring the distance between cathode and first grid during assembly of electron gun are described. Its measurement range and precision are 10~160μm and 3.8% respectively. Some factors, such as manufacture technique, surface roughness, gradient, environment temperature and spectral character of LED, affected the behaviour of the sensor are discussed.更多还原