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三规矩块超级精密检查用的光波干涉仪 (甲)规矩块的超级精密计测和检查: 在工厂中的计量试验室往往借有光波干涉仪以检查测定规矩块之绝对长度,其测定精确度至少为所使用单色光波干涉带纹的十分之一;即设所使用之单色光波为镉燈的绿色波(λ_R=0.5094μ),则每一条干涉带纹表示规矩块具有0.2545μ的长度差,故干涉仪的测定精确度为0.02545μ。通常的检定和计测工作,系将工作用规矩块对
Three rules block ultra-precision inspection with light wave interferometer (A) rules of the block super-precision measurement and inspection: Measurement laboratories in the factory often by the light wave interferometer to check the determination of the absolute length of the regulatory rules, the determination of accuracy Is at least one tenth of the monochromatic lightwave interference band used; that is, the monochromatic lightwave used is a green wave of a cadmium lamp (λ_R = 0.5094μ), then each interference band indicates that the ruler has 0.2545μ Length difference, so the determination accuracy of interferometer 0.02545μ. The usual test and measurement work, the Department will work with the right block