경통시스템 내 LED 렌즈의 전열특성 분석
Analysis of Thermal Characteristics for A LED Lens in Mold Core System
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다운로드
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참고문헌
키워드
초록
Numerical analysis has been carried out to predict the thermal characteristics for a LED lens in mold core system. These thermal characteristics inside the lens are largely affected by geometry, material, and initial conditions of the mold core and lens system. Local temperature and heat flux variation inside the lens are compared for several initial temperatures. Maximum temperature inside the lens was decreased rapidly from the beginning of cooling process up to about 10 seconds. There was also large variation of the heat flux at the upper and lower surfaces of the lens with initial temperature distribution. And the heat flux from the thin lower surface of the lens was relatively higher than the opposite-side thick region. In addition, overall heat transfer rate from the lens through the mold core has similar transient distribution from the beginning. These results can be applied as basic heat transfer data for the LED lens design and manufacturing process in the mold core system.
Abstract
Numerical analysis has been carried out to predict the thermal characteristics for a LED lens in mold core system. These thermal characteristics inside the lens are largely affected by geometry, material, and initial conditions of the mold core and lens system. Local temperature and heat flux variation inside the lens are compared for several initial temperatures. Maximum temperature inside the lens was decreased rapidly from the beginning of cooling process up to about 10 seconds. There was also large variation of the heat flux at the upper and lower surfaces of the lens with initial temperature distribution. And the heat flux from the thin lower surface of the lens was relatively higher than the opposite-side thick region. In addition, overall heat transfer rate from the lens through the mold core has similar transient distribution from the beginning. These results can be applied as basic heat transfer data for the LED lens design and manufacturing process in the mold core system.
참고문헌 (8)
- Han, J. S, "Development of Ultra-precision Machining Process for High-quality Optical Lens Mold Core Using Diamond Turning Machine", Proceeding of KSPE 2020 Conference, Korean Society for Precision Engineering, pp.719~ (2020)
- Joo, J. Y, "Design of Light Collimator for Anaxisymetric LED Beam Forming, KIIEE Annual Spring Conference 2011", The Korean Institute of Illuminating and Electrical Installation Engineers, pp.139~140 (2011)
- Je, T. J, "LED Optical Lens Mold Machining Technology", KSMTE Annual Spring Conference 2014, The Korean Society of Manufacturing Technology Engineers, pp.344~ (2014)
- 송민재, "승온 반응속도식을 이용한 LED용 실리콘 렌즈의 경화 및 열전달해석", 소성∙가공, 24(2), pp.101~106 (2015), 한국소성∙가공학회
- ANSYS Inc, "Workbench User’s Guide", ~ (2020)
- ANSYS Inc, "Mesh User’s Guide", ~ (2020)
- Sharif, S, "Feasibility Study of Using Vegetable Oil as a Cutting Lubricant through the Use of Minimum Quantity Lubrication during Machining", Research VOT, (78055) (2009)
- Nunes, P. S, "Cyclic olefin polymers: emerging materials for lab-on-a-chip applications", Microfluidics and nanofluidics, 9(2), pp.145~161 (2010)