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Compact Zoom Lens Design for a 5x Mobile Camera Using Prism
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  • Compact Zoom Lens Design for a 5x Mobile Camera Using Prism
  • Compact Zoom Lens Design for a 5x Mobile Camera Using Prism
저자명
Park. Sung-Chan,Lee. Sang-Hun,Kim. Jong-Gyu
간행물명
Journal of the Optical Society of Korea
권/호정보
2009년|13권 2호|pp.206-212 (7 pages)
발행정보
한국광학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

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.