现代战争中激光照射已成为一种严重的军事威胁。如何快速探测激光的来袭方向以便采取适当的对抗措施,是各国军方非常重视的新技术。本文介绍一种多焦点全息透镜探测系统,不仅能指示激光出现的象限,而且能提供激光的入射角。本项技术用于激光制导、激光跟踪,代替一般四象限跟踪系统,也具有广阔的前景。 Laser exposure in modern warfare has become a serious military threat. How to quickly detect the direction of laser strikes in order to take appropriate countermeasures, military attaches great importance to all countries new technologies. This article describes a multi-focal holographic lens detection system that not only indicates the quadrant in which the laser appears, but also provides the angle of incidence of the laser. This technology is also used in laser guidance and laser tracking, and has the bright future as an alternative to the general four-quadrant tracking system.