一、引言照相分划板的精度和图案线纹质量等,在很大程度上依赖于照相底板的优劣,因此,用多快好省的方法制取高质量的照相底板,一直是刻度制造者努力的目标。很长时间以来,光学工业用照相法制造各种刻度的照相底板,除可用刻划的办法解决部分图案外,都是沿用绘制放大图,经多次缩小 I. INTRODUCTION The accuracy of the photographic reticle and the quality of the pattern lines are largely dependent on the advantages and disadvantages of photographic backsheets. Therefore, making photographic backsheets with high speed and high efficiency has always been the key to manufacturing scale The goal of hard work. For a long time, the optical industry to create a variety of photographic camera base plate, in addition to the use of scored way to solve part of the pattern, are drawn using the enlarged view, after several narrowing