Simulation and experiment of influence of adhesive curing on reflective mirror surface

被引：9

作者：

Dong, De-Yi ^{[1
]}

Li, Zhi-Lai ^{[1
]}

Li, Rui-Gang ^{[1
]}

Fan, Yan-Chao ^{[1
]}

Zhang, Xue-Jun ^{[1
]}

机构：

[1] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun

来源：

Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2014年 / 22卷 / 10期

关键词：

Adhesive curing; Adhesive shrinkage; Finite element analysis; Optical element; Reflective mirror surface;

D O I：

10.3788/OPE.20142210.2698

中图分类号：

学科分类号：

摘要：

The effect of shrinkage stress induced by adhesive curing on a reflective mirror surface was analyzed when the thick adhesive layer was used to joint optical elements. Firstly, the principle of tensile stress induced by adhesive layer to optical elements during adhesive curing was analyzed and the main factors of generating shrinkage stress were obtained. Then, a finite element model of the reflective mirror set was constructed. The finite element analysis was carried out by using the thermal-to-shrinkage analogy and the thermal modeling tools were used to compute the adhesive curing shrinkage. The curing shrinkage was substituted by low temperature concentration, but the Coefficient of Thermal Expansion( CTE) value of the adhesive could not be taken place by the coefficient of adhesive shrinkage directly. After converting the coefficient of adhesive shrinkage to the equivalent CTE value, the analysis results are accord with the test results. Finally, the improved glue scheme was put forward on the basis of the analysis results. The experiment results indicate that the reflective mirror surface deformation( PV value) has decreased from 0.547λ to 0.064λ, and the RMS value decreased from 0.127λ to 0.038λ. This results mean that the effect of shrinkage stress in adhesive curing processing on the reflective mirror surface has improved greatly. ©, 2014, Guangxue Jingmi Gongcheng/Optics and Precision Engineering. All right reserved.

引用

页码：2698 / 2707

页数：9

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