高灵敏度光接收电路的研究

Research of High Sensitivity Optical Receiving Circuit

详细介绍了一种应用于激光干涉式非接触眼压测量的高灵敏度光接收电路的工作原理,并对其中光电检测、带通滤波和放大部分的设计进行了研究。通过对系统进行理论分析和科学实验,表明该系统可以对低于30nW的微弱光信号进行高灵敏度的检测,进而解决了激光干涉式非接触眼压测量研究中的一个实质性的问题。

In this article,the working principle of a high sensitivity optiical receiving circuit applying to the non - contact measurement of IOP based on laser interferometry is introduced in detail,and the optoelectronic detector,filter and amplifier in which the high sensitivity optical receiving circuit are designed and rese - arched.According to the theoretic analysis and experimental results,the system can reliably detect the faint - optical signal of30μW,which solves an essential problem in the research of non - contact measurement of IOP based on laser interferometry.