日本浜松光电子公司与静冈县合作,试制成地震预测用超长距离精密光波测距仪,现正测试中。以低于1cm 的精度监视处于东海地震震源地骏河海沟两侧的静冈-伊豆间的距离,测量板块移动量以预测地震。该装置利用伊豆半岛上设置的反射镜,反射静冈一侧发射的光,精确测量光的往返时间(图1)。图2为该装置的光学系统。作为光波测距 Japan Hamamatsu Optoelectronics Co., Ltd. and Shizuoka Prefecture, trial production of earthquake prediction with ultra-long-range precision light wave range finder, is now testing. The distance between Shizuoka and Izu on both sides of the Surugad Tug, which is the focal point of the East China Sea earthquake, is monitored with an accuracy of less than 1 cm and the amount of plate movement is measured to predict the earthquake. The device uses a mirror set on the Izu Peninsula to reflect the light emitted from the Shizuoka side and accurately measure the round trip time of light (Figure 1). Figure 2 shows the optical system of the device. As light wave distance measurement