计算机产生的全息图(CGHs)能产生数学描述的任意波前,其应用包括非球面检验、激光二极管光学元件、CO_2激光光学元件、普通全息图记录和光学数据处理等。可见光波长的电子束计算机全息图直径可大至10英寸,但目前此种技术的成本过于昂贵,经济考虑通常要求计算它能满足如下四个限制因素中之一:即光学功率低、波长长(红外)、孔径小或直线性编码。 Computer generated holograms (CGHs) produce mathematically described arbitrary wavefront for applications such as aspheric inspection, laser diode optics, CO 2 laser optics, normal hologram recording, and optical data processing. Electron beam computer holograms at visible wavelengths can be as large as 10 inches in diameter, but at the present time this technique is too costly to justify, and economic considerations usually require calculation of one of four limiting factors: low optical power, long wavelength Infrared), small aperture or linear coding.