彩色数字全息检测研究中，当物体的投影尺寸与CCD面阵尺寸有较大差异时，为充分获取物体信息，可以使用透镜系统对物光进行变换，并且，基于物和像的相似特性，将物体的像视为像空间中的物体在像空间中进行彩色数字图像重建是常用的方法。像空间中确定不同波长光照的物体的像平面，按照同一物理尺寸重建不同色光的像光场是应用研究中必须解决的问题。提出一种不必知道光学系统的透镜参数而通过实验确定不同色光像平面的简易方法，并基于数字全息重建像焦深的研究，在像空间中较好地重建了物体的彩色图像。

Based on the calculation formulas of heat treatment temperature field for an arbitrary incident laser intensity distribution, the transformation intensity distribution of CO2 laser beam passing an integrating mirror is studied theoretically and experimentally. The derived formulas are applied in laser heat treatment research which is transformed by optical system, and the theoretical calculation results are compared with experimental results. It is shown that the formulas can be used to calculate the laser heat treatment temperature field accurately, and the calculation speed is obviously faster than the numerical calculation methods with the same precision. The calculation software can be used to select proper experiment parameters.

After propagating through the overlapping-image integral mirror, the interference fringe is a major factor that affects the uniformity of the image plane. In this paper, a He-Ne laser is used as light source, and the complex amplitude of the incident laser beam is modulated by an alternating electric field controlled vibrating mirror that is placed before the optical system. The experimental results show that after propagating through the overlapping-image integral mirror, not only the contrast of the interference fringes on the image plane is depressed, but also the uniformity of the intensity distribution of the transformed light beam is improved. Finally, based on the experimental results, two optical systems that can be applied to high power laser uniformity transformation are presented.