据英国专利号1122881报道,法国的“国家科学研究中心”已研制出一种用于测试光学系统的调制传递函数(MTF)的仪器,并已于1964年获得了专利权。这种测试仪器特别适用于照相透镜、显微物镜和其它各种透镜的调制传递函数的测量。测量时,用一点光源或一狭缝光源照射被测透镜的前面,并通过可动的正弦装置,使对比传递样板横过被测透镜或被 According to British Patent No. 1122881, the French National Center for Scientific Research has developed an instrument for testing the Modulation Transfer Function (MTF) of optical systems and was patented in 1964. This test instrument is particularly suitable for the measurement of the modulation transfer function of photographic lenses, microscopic objectives and other various lenses. Measurement, with a little light source or a slit light source to illuminate the front of the lens under test, and through the movable sine device, so that the contrast transfer model across the lens or be tested