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Simulation of the Heating and Pressing Parameters of Micro Aspheric Lens Molding Process
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    Abstract:

    To predict the heating and pressing parameters of a micro aspheric lens molding process, a molding process model was established and all the boundary conditions were set. Based on the finite element software numerical simulation, mold filling condition of glass D-ZK3 at 540~590 ℃ was analyzed, and the optimum molding temperature was about 580 ℃.The results have shown that the higher the molding temperature, the smaller the residual stress, and the minimum heating time for this model is about 155 s at 580 ℃ molding temperature. Residual stress after molding is larger at the edge of lens than at the center, and the strain is larger at the top than at the bottom. Finally, three different molding velocities were analyzed, and the results have shown that the average residual stress of the lens increases with the increase of molding velocity.

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