【摘要】 介绍一种既能测量辐照度比值又能实现曝光自动控制的数显两用仪。该仪器使用方便，显示清晰，对提高工作效率，节省材料，拍摄优良全息图有很好作用。更多还原

【Abstract】 This article introduces a new instrument for taking fine hologram.Exposures and ratio between the irradiance of object beam and the irrad iance of reference beam are accurately controlled and digitally displayed.This i nstrument has features of clear digital and easy operating.更多还原