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http://dx.doi.org/10.3807/JOSK.2014.18.1.023

Evaluation of a Corrected Cam for an Interchangeable Lens with a Distance Window  

Kim, Jin Woo (R&D Team, Digital Imaging Business, Samsung Electronics Co., Ltd.)
Ryu, Jae Myung (Department of Optical Engineering, Kumoh National Institute of Technology)
Jo, Jae Heung (Department of Photonics and Sensors, Hannam University)
Kim, Young-Joo (Department of Mechanical Engineering, Yonsei University)
Publication Information
Journal of the Optical Society of Korea / v.18, no.1, 2014 , pp. 23-31 More about this Journal
Abstract
Recently, the number of camera companies that produce commercializing interchangeable lens systems such as digital single lens reflex (DSLR) and compact system camera (CSC) lenses has been gradually increasing. These interchangeable lenses have various kinds of lenses with distinct specifications. In particular, the distance window among these specifications is the function most preferred by customers. Mechanical manual zoom and manual focus in these high end camera lenses with a distance window are in particular desirable specifications and are required for product quality. However, the AF lens group is linked to the zoom cam and moves. Because the AF lens group moves along with the object distance, we can not realize the distance window with only zoom locus calculation. In this paper, in order to solve the problem, we suggest an optical calculation method for a corrected AF zoom cam for an interchangeable lens with a distance window to achieve product differentiation and analyze the error in the calculation.
Keywords
Lens design; Zoom lens; Zoom locus; Cam correction; Distance window;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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