| A Study on the Molding Process of an Optical Communication Aspherical Glass Lens Using the Weight Molding Method |
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Sang Ryu, Kyung Hwan Roh, Kwang Hyeon Choi, Won Guk Kim, Won Kyung Lee, Do Hee Kim, Kuk Hyeon Yang |
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IOSOLUTION, Gwangju 61008, Korea |
| 광통신용 비구면 글라스 렌즈 자중성형 공정 연구 |
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류상, 노경환, 최광현, 김원국, 이원경, 김도희, 양국현 |
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아이오솔루션(주), 중앙연구소 |
Correspondence:
Sang Ryu,
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Received: 12 September 2018 • Revised: 26 October 2018 • Accepted: 30 October 2018 |
| Abstract |
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In this study, the aspherical lens for optical communications produced not with an one-step pneumatic type of external pressurization system (existed GMP process) but a constant weight of self-loaded mold put up to upper core. So the lens is molding with self-loaded weight molding and it calls Weight Molding process. In self-loaded molding process, we measured changes of center thickness molding lenses with each variable molding temperatures and time to find the effect of center of lens thickness to search key factors. As experimental results, the center thickness reach to targeted lenses step time value was changed drastically and it depends by molding temperature. If the molding temperature gets higher, the targeted lens that is reaching to the center thickness step time value was decreased. To find the effect of life improvement on mold core by imposing the self-loaded molding process we molded with GMP(Glass molding press) method and self-loaded molding method for 9,000 times and measured the lenses shape accuracy and surface roughness to evaluate the core life. As a result the self-loaded molding method core has 2,000 times longer that GMP (Glass molding press) method. If we adopt self-loaded molding method of the optical aspherical lens molding in the future, we expect that it would reduce the expense of changing the molds by molding core life improvements. |
| Key Words:
Aspherical glass lens, Weight Molding method, Glass Molding Pressure method, Telecommunication |
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