【摘要】 提出了一种高鉴别能力的实时光学相关器，它采用液晶光阀（ＬＣＬＶ）作为实时输入器件，并利用其非线性变换特性对图像微分预处理；全息记录材料采用光折变晶体，且使用会聚球面波作参考光。所给出的实验结果表明，该光学相关器具有鉴别能力高、实时性和灵活性强，以及结构紧凑的特点更多还原

【Abstract】 A real time optical correlator with high discrimination is suggested in this paper. In this correlator, a liquid crystal light valve (LCLV) is used as real time input and image preprocessing device. In recording hologram, a piece of photorefractive crystal (Fe∶LiNbO 3) is used as holograhic recording material and a convergent spherical wave as reference light wave. the correlator is characterized by high discrimination, real time and flexible processing, and compact constructure.更多还原