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http://dx.doi.org/10.14775/ksmpe.2021.20.01.001

A Study on the Analysis of Injection Molding of F-theta Lens  

Park, Yong-Woo (Department of Convergence Mechanical Engineering, Gyeongsang National University)
Moon, Sung-Min (School of Mechanical & Aerospace Engineering, Gyeongsang National University)
Lyu, Sung-Ki (School of Mechanical & Aerospace Engineering, Gyeongsang National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.1, 2021 , pp. 1-6 More about this Journal
Abstract
In this study, we investigate the injection molding of f-theta lens, an important element of the laser scanning unit of laser printers and scanning systems. The f-theta lens is an aspherical plastic lens that must be molded with a precision of seconds. An injection molding method is often used for mass producing aspherical plastic lenses at a low cost. In the injection molding process, costs related to forming and injection are included. Therefore, in this study, to determine the shrinkage and deformation of injection molded f-theta lens, we predict the pressure and temperature distributions. Further, based on the analysis of the predictions, we maximize the design efficiency and verify the cost and development period reduction.
Keywords
Laser Scanning Unit; F-theta Lens; Injection; Resin; Mold;
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