Optimized design of lightweight flat mirror based on Isight
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摘要: 针对大口径反射镜的设计，提出一种新的优化思路,用Isight集成SolidWorks和ANSYS，用实验设计、优化结合的方式得到了满足约束的最优尺寸,同时得到约束为反射镜水平时自重和高低温下的变形，以及一阶固有频率，目标为反射镜的质量最小化，轻量化率达51％。将反射镜面的变形节点拟合成Zernike多项式，导入到CodeV中，得到了反射镜受温度和重力共同作用下的光学系统点列斑，从而反映出变形镜面对光学像质的影响。Abstract: A new optimized design of large aperture mirror is presented, the optimum mirror size is obtained by using Design Of Experiment, optimization module embedded in Isight which integrates with SolidWorks and ANSYS. Subjected to deformation of gravity and 60℃/-40℃ as well as first order natural frequency, design target is to minimize the mass of oval mirror, the weight is reduced to 51％. The deformed node of mirror is fitted to Zernike polynomial, imported into codeⅤ. Then the spot diagram of optical system dependent on temperature and gravity is obtained, and the deformed mirror effect on optical performance is achieved.
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Keywords:
- flat mirror /
- natural frequency /
- Isight /
- rib
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