漫反射全息摄影实验中曝光方法的自动化设计

Automation Improvement of Exposure Method in Diffuse Reflection Holography

基于单片机技术对全息摄影实验中的曝光过程进行自动化改进,设计并制作成一个根据光强大小自动调控曝光时间的控制开关。该开关通过光敏电阻阵列采集光强信息、将数据送入单片机计算得到曝光时间、进而控制光源前面的开关,具有成本低、精度高的特点,可根据光照的明暗选择合适的档位以提高精度,弥补了实验中曝光时间统一化的不足,提高实验成功率,还可以直接使用到如“马吕斯定律的验证”等其他光学相关的大学物理基础实验中。

Based on the electronic circuit technology,the exposure technology in holographic experiment has improved to be automatic.Photosensitive elements are used in our equipment to receive the light intensity and quantifies it,the single-chip microcomputer calculates the exposure time and delays the relay.Our equipment is low-cost and accurate while it can control the exposure time precisely responding to different illumination intensity.It can also provide multi-marks to improve accuracy.Because of the advantages of our equipment,it can solve the awkward situation that all the exposure times are uniform and can be used in many other optically dependent experiments such as the proof of Marius’Law.