Korean Journal of Computational Design and Engineering (한국CDE학회논문집)

Society for Computational Design and Engineering (한국CDE학회)
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Tolerance Analysis and Optimization for a Lens System of a Mobile Phone Camera

휴대폰용 카메라 렌즈 시스템의 공차최적설계

  • 정상진 (한양대학교 대학원 기계공학과) ;
  • 최동훈 (한양대학교 최적설계신기술 연구센터 (iDOT)) ;
  • 최병렬 ((주)피도텍) ;
  • 김주호 ((주)삼성전기 OMS 사업부)
  • Received : 20110000
  • Accepted : 20110000
  • Published : 2011.12.01
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Abstract

Since tolerance allocation in a mobile phone camera manufacturing process greatly affects production cost and reliability of optical performance, a systematic design methodology for allocating optimal tolerances is required. In this study, we proposed the tolerance optimization procedure for determining tolerances that minimize production cost while satisfying the reliability constraints on important optical performance indices. We employed Latin hypercube sampling for evaluating the reliabilities of optical performance and a function-based sequential approximate optimization technique that can reduce computational burden and well handle numerical noise in the tolerance optimization process. Using the suggested tolerance optimization approach, the optimal production cost was decreased by 30.3 % compared to the initial cost while satisfying the two constraints on the reliabilities of optical performance.

Keywords

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