本文提出与Benton法不同的拍摄二步彩虹全息的新方法.利用二次正全息像获得了二步彩虹全息的正重现像.分析表明,重现像的模、轴向放大率是匹配的,而且本方法排除了Benton二步法中使用会聚参考光的主要缺点.文中同时给出实验结果.

Unlike the Benton two-step rainbow holographic process, a new technique for making the two-step rainbow holograms is presented. Orthoscopic holographic images produced separately in both steps are used and the final reconstructed image is orthoscopio under white light illumination. Analysis indicates that the reconstructed image with matched longitudinal-lateral magnification can be obtained and furthermore, the use of converging reference waves, an major obstacle of making Benton s two-step holograms, is removed. Experimental results are included.