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http://dx.doi.org/10.5228/KSPP.2009.18.2.128

Ray Tracing of a Plastic Aspheric Lens by Considering Index Distribution Induced from Injection Molding  

Eom, Hye-Ju (서울산업대학교 에너지환경대학원 Nano-IT 공학과)
Park, Keun (서울산업대학교 기계설계 자동화공학부)
Publication Information
Transactions of Materials Processing / v.18, no.2, 2009 , pp. 128-134 More about this Journal
Abstract
The present study covers an integrated simulation method to evaluate optical performance of an aspheric plastic lens by connecting an injection molding analysis with a ray tracing simulation. Traditional ray tracing methods have based on the assumption that the optical properties of a lens are homogeneous throughout the entire volume. This assumption is to a certain extent unrealistic for injection-molded plastic lenses because material properties vary at every point due to the injection molding effects. To take into account the effects of the inhomogeneous optical properties of the molded lens, a numerical scheme is developed to calculate the distribution of refractive index induced from the injection molding process. This index distribution is then reflected onto CODE $V^{(R)}$ simulation and used to calculate ray paths in inhomogeneous media. The proposed tracing scheme is implemented on the tracing of an aspheric lens for a mobile phone camera module.
Keywords
Injection Molding; Aspheric Lens; Ray Tracing; Refractive Index; Finite Element Analysis;
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Times Cited By KSCI : 2  (Citation Analysis)
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