光学技术, 2018, 44 (2): 231, 网络出版: 2018-05-01   

光学玻璃挠曲刚度的光学测量方法研究

Study on optic measurement method of optical glass flexural rigidity
作者单位
西安科技大学 理学院, 陕西 西安 710054
摘要
提出了一种基于光干涉法测量小样品光学平板玻璃挠曲刚度的方法。应用平板理论及牛顿环原理推导了光学平板玻璃挠曲刚度与牛顿环干涉图像之间的解析公式, 通过自行设计的牛顿环应力测量装置测量了光学平板玻璃的应力及对应的牛顿环干涉图像, 得到了光学平板玻璃的挠曲刚度。实验结果显示: 测得的挠曲刚度数据与厂家标称值相比, 在应力29.02~38.66N范围内, 测量相对误差不超过±6.9%; 在应力16.07~29.02N范围内, 测量相对误差不超过±11%。
Abstract
A method for measuring the flexural rigidity of small sample optical plate glass based on optical interferometry is presented. The analytical formula between flexural rigidity and Newton’s rings interference image of optical flat glass is deduced by using the theory of plate theory and Newton's rings principle. The stress of the optical flat glass and the corresponding Newton’s rings interference are measured by the self-designed Newton’s rings stress measuring device. The flexural rigidity of the optical flat glass is obtained by the analytical formula above. The experimental results show that the measured flexural stiffness data is in good agreement with the nominal values of the manufacturer, the relative error of the measured stiffness is not more than ±6.9% in the range of stress 29.02~38.66N, while in the range of stress 16.07~29.02N, the relative error of measured is not more than ± 11%.

郭长立, 冯小强. 光学玻璃挠曲刚度的光学测量方法研究[J]. 光学技术, 2018, 44(2): 231. GUO Changli, FENG Xiaoqiang. Study on optic measurement method of optical glass flexural rigidity[J]. Optical Technique, 2018, 44(2): 231.

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