一种光学玻璃折射率自动测量方法

本文研究了一种折射率自动测量方法。可对紫外、可见,红外光谱折射率作自动精密测量。在光源稳定情况下,可见光测量精度可达±3×10^-6。该方法以最小偏向角方法为依据,以外反射像引导接收器,使其自动跟踪至最小偏向角的精确位置,最后给出样品的折射率。整个测量系统采用微计算机完成自动控制、采集及处理。该方法还可进行角度自动测量。

A Method for Measuring Refractive Index of Optical Glass Automatically

In this paper a method for measuring the refractive index of optical glass automatically is introduced. By this method the refractive index in a wide range ultraviolet, visible and infrared can be measured automatically. When the light source is stable, the accuracy of measurement in visible range can reach?3?10^-6. This method is based on the principle of minimum deviation angle. The exact position of the minimum deviation angle is traced by a detector guided by outside refrection image. Then the refractive index of sample can be given. In the measurement system, the automatic control, data collection and meesuring process are totally completed by a microcomputer. This method can be also used to measure angle automatically.