Design of mirror system in digital single lens reflex camera for high-speed continuous shooting

Seungho Lim, Byung Han Ko, Kyoung Su Park, No Cheol Park, Young Pil Park, Chongsam Chung, Jin Won Lee

Research output: Contribution to journalArticlepeer-review


This research explores anti-vibration mechanisms for mirror systems in DSLR cameras through numerical methods such as explicit/implicit finite element analysis (FEA) and multi-body dynamics (MBD). Kinematic design of the movable mirrors, which guide incoming light, is carried out through MBD, and a two-dimensional mirror system geometry that increase the mirror area while allowing fast swing-up speeds can be obtained. The dynamic behaviors of mirror systems are predicted via explicit FEM and verified with modal analysis using implicit FEM. In addition, a prototype based on FEA results has been manufactured, and improved anti-vibration performance is confirmed via measurements of the dynamic behavior of the mirror system.

Original languageEnglish
Pages (from-to)1487-1496
Number of pages10
JournalMicrosystem Technologies
Issue number9-10
Publication statusPublished - 2012 Sept

Bibliographical note

Funding Information:
We would like to gratefully acknowledge the support of Samsung Electronics and the Center for Information Storage Devices, which have designated this research as a specialized project at Yonsei University. In addition, this work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2011-0000023).

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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