Design of modified shock isolators for the optical pickup in an ODD by analytical and experimental methods

Wonseok Oh, Seungho Lim, Kyoung Su Park, No Cheol Park, Young Pil Park, Jae Sung Lee, Han Baek Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Optical disk drives are subjected to many different types of shock environments. In particular, during harsh shipping conditions, extremely large impacts and amplified shock accelerations are transmitted to the optical pickup because of its relatively small mass, leading to the mechanical failure of the optical components. In this paper, an explicit finite element analysis was performed to improve the shock isolators. The analysis results were verified with a linear drop test. Based on the verified numerical model, the shapes of the shock isolators were modified via the design of experiments methodology, considering the maximum stress. The modified shock isolators were fabricated and tested under linear drop conditions. The shock isolation performance of the modified isolators was improved by 18 %.

Original languageEnglish
Pages (from-to)1615-1623
Number of pages9
JournalMicrosystem Technologies
Issue number9-10
Publication statusPublished - 2013 Sept

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (No. 2012-0001013). In addition, we gratefully acknowledge the support of Hitachi-LG Data Storage Inc. and the Center for Information Storage Devices, which has designated this research as a specialization project for Yonsei University.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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