离轴全息记录与再现。复习衍射计算以及光学全息记录与再现原理，学习通过衍射计算完成光学离轴全息记录与再现过程仿真方法，理解第二代光学全息共轭像分离的条件，同时与通州全息作比较，注意观察再现像的特点。-Off-axis holographic recording and playback.Review the diffraction calculation as well as the optical principle of holographic recording and playback,