劈尖干涉测细丝直径中测量点的选择  

Selection of Measurement Point for Determining Filament Diameter by Wedge

作　　者：曲铁平[1] 李凤岐[1] 

机构地区：[1]沈阳理工大学理学院,辽宁沈阳110159

出　　处：《沈阳理工大学学报》2014年第3期35-37,共3页Journal of Shenyang Ligong University

摘　　要：劈尖干涉测量细丝直径,采用钠光灯作为光源。实验中,干涉条纹的清晰度随测量点的变化而变化;将空气劈尖的等厚干涉原理与干涉条纹的反衬度相结合,研究劈尖干涉条纹清晰度的变化原因。结果表明,测量点应选在劈尖棱边干涉级次较低的位置(级次n<100)。The reason why the clarity of wedge interference fringes varied at different positions was explained with equal thickness interference principle of air wedge and contrast of interference fringes. It was pointed out that the measurement point should be selected near the edge of wedge,where the interference order was low.

关 键 词：劈尖干涉 细丝直径 干涉条纹的反衬度 测量点 

分 类 号：O436.1[机械工程—光学工程]