假设了空间和时间变量之间的某些对应关系,即,在频率域中,光学信号可以用空间或空间和时间的函数描述,这样阿贝理论可应用于时间分布。可以引出空间不变,以时间频率v=c/λ工作的任何光学系统的时间响应概念:同时也报告了光学信息时间编码的方法,导致分光器可用瞬时付里叶全息图作输出的考虑。这可通过瞬时全息摄影术 Assume some correspondence between space and time variables. That is, in the frequency domain, the optical signal can be described as a function of space or space and time, so Abey theory can be applied to time distribution. The concept of time response of any optical system that operates with a constant time frequency of v = c / λ can be derived: a method of time encoding optical information is also reported, resulting in the fact that the optical splitter can be used with instantaneous Fourier holograms as output. This is done by instantaneous holography