选取窗口结构强度相对较弱的圆形平面玻璃光窗外壳，就该类外壳最薄弱的带光窗管帽受力状态进行了有限元分析，根据强冲击下结构与应力的变化趋势优化设计了管帽结构，结果显示经结构优化的管帽能承受1×104g的强冲击，满足光电器件封装的高强度要求。

Taking the circular flat package with weak glass window as the research object, the underforce status of the cap with optical window was analyzed with the method of finite element. The cap structure would be modified according to the variation tendency of the caps structure and stress under strong impact so as to satisfy the requirement of high strength packaging.