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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 13, Iss. 2 — Jun. 25, 2009
  • pp: 206–212

Compact Zoom Lens Design for a 5x Mobile Camera Using Prism

Sung-Chan Park, Sang-Hun Lee, and Jong-Gyu Kim  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 13, Issue 2, pp. 206-212 (2009)


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Abstract

This study presents the compact zoom lens with a zoom ratio of 5x for a mobile camera by using a prism. The lens modules and aberrations are applied to the initial design for a four-group inner-focus zoom system. An initial design with a focal length range of 4.4 to 22.0 mm is derived by assigning the first-order quantities and third-order aberrations to each module along with the constraints required for optimum solutions. We separately designed a real lens for each group and then combined them to establish an actual zoom system. The combination of the separately designed groups results in a system that satisfies the basic properties of the zoom system consisting of the original lens modules. In order to have a slim system, we directly inserted the right-angle prism in front of the first group. This configuration resulted in a more compact zoom system with a depth of 8 mm. The finally designed zoom lens has an f-number of 3.5 to 4.5 and is expected to fulfill the requirements for a slim mobile zoom camera having high zoom ratio of 5x.

© 2009 Optical Society of Korea

OCIS Codes
(120.3620) Instrumentation, measurement, and metrology : Lens system design
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices

History
Original Manuscript: April 6, 2009
Manuscript Accepted: April 15, 2009
Published: June 25, 2009

Citation
Sung-Chan Park, Sang-Hun Lee, and Jong-Gyu Kim, "Compact Zoom Lens Design for a 5x Mobile Camera Using Prism," J. Opt. Soc. Korea 13, 206-212 (2009)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-13-2-206


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References

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