引言光传感器具有省力化、自动化、低成本化、可靠性高、安全性好等优点。现在其应用已深入到医疗、交通、家庭等各方面。近年来,激光技术、光纤技术、微光元件等有了明显的进步,因此,以前难以着手的光技术目前都比较容易解决了。可以说,光传感器的新时期即将到来。 Introduction Optical sensors with labor-saving, automation, low cost, high reliability, good security and so on. Now its application has been deep into the medical, transportation, family and other aspects. In recent years, laser technology, optical fiber technology, micro-optical components have made significant progress, therefore, previously difficult to proceed with the optical technology are relatively easy to solve. It can be said that the new era of optical sensors is coming.