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原位成形光学微透镜曲面形状的计算

Keywords: 原位成形,光学微透镜,表面张力,胶滴,表面方程组

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Abstract:

研究原位成形光学微透镜工艺的流体力学机理,建立光学胶滴的表面方程组,它反映了当胶滴在表面张力作用下铺展后,表面上任一点的各坐标间关系.给出求解该方程组的数值计算方法,对不同体积、接触角和特征长度等胶滴性能参数,计算胶滴的表面形状参数,并画出胶滴表面的形状曲线和曲率半径曲线.结果表明:接触角与特征长度减小,则铺展半径增大、厚度减小,表面非球面性变强;在胶滴中掺入适量纳米石英粉末,既可增强透镜强度,又可减小特征长度和接触角;打磨玻璃表面使之粗糙化,既可增加透镜与玻璃间的黏接强度,又可减小接触角.

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