CAJ | 학술논문

由于不规则的外形,玻璃预制件的选择直接影响异形非球面透镜的成型.本文通过有限元法探讨不同预制件对成型透镜的影响,首先选择了一个比较典型的异形非球面透镜作为目标透镜,将球形玻璃和圆柱形玻璃作为预制件,采用高级非线性有限元程序 MSC.Marc,仿真该异形非球面透镜的成型过程.基于仿真,对比分析其成型性、残余应力、面形精度.结果表明,圆柱形玻璃预制件更适合成型异形非球面玻璃透镜.
유우불규칙적외형,파리예제건적선택직접영향이형비구면투경적성형.본문통과유한원법탐토불동예제건대성형투경적영향,수선선택료일개비교전형적이형비구면투경작위목표투경,장구형파리화원주형파리작위예제건,채용고급비선성유한원정서 MSC.Marc,방진해이형비구면투경적성형과정.기우방진,대비분석기성형성、잔여응력、면형정도.결과표명,원주형파리예제건경괄합성형이형비구면파리투경.
Glass preform is able to affect form of abnormal aspherical lens as its irregular shape. Different preforms were investigated by numerical simulation to discuss how to affect form of abnormal aspherical lens. A typical abnormal aspherical lens was chosen as target lens,and the globular and cylindrical glasses were chosen as preforms. Using advanced nonlinear finite element program of MSC.Marc, the form process of the abnormal aspherical lens was simulated. Based on the simulations, the formability, the residual stress and the form precision were analyzed and compared. It can be inferred that the glass preform of cylindricity is more suitable for forming abnormal aspherical lens.