光学全息术在日常生活中现已牢固地建立,在信用卡和贺卡及其它地方,都能找到全息图。全息图形成原来需要一激光参考束,它同时照明物体。为从全息图得到图像,同样需要激光。现在,全息图可用白光读出,而计算机可产生二进制全息图。计算机产生的全息图由透明和不透明元件的列阵构 Optical holography is now firmly established in everyday life, and holograms can be found on credit and greeting cards and elsewhere. Hologram formation originally required a laser reference beam, which illuminates the object at the same time. To get the image from the hologram, the laser is also needed. Holograms can now be read out in white light, and computers can produce binary holograms. Computer-generated holograms consist of arrays of transparent and opaque elements