本文介绍了由不同焦距与不同衍射方向的全息透镜组合而成的一种新型全息元件。这种元件中的每个透镜具有相同的物方光轴和不同的象方光轴。它可以把物方空间沿光轴方向上的不同物距上的物面分别成像在对应的通道上,从而把一个三维物场变为多个二维像进行显示。文中给出了应用此元件对三线粒子场进行检测的初步结果。

A new holographic optical element (HOE) consisting of the hololenses with different focal length and diffraotional channel is described. The object space axes of all hololenses in the HOE are the same, while each optical axis in the image space is different. By the aid of such HOE, the object planes at different distance can be-Imaged into the corresponding channels, Therefore a 3-D object field may be displayed by many 2-D images. The primary experimental results for sampling 3-D particles field are presented.