1.6 μm 크기 8메가 픽셀용 모바일 광각 렌즈 설계

Purpose: The importance of mobile camera lens images is increasing due to the increasing popularity of media. The goal of this study was to design mobile wide-angle lenses to reduce thickness and enhance image clarity, resulting in more natural and realistic images. Methods: We used a Code V Version 11.5 design program to construct a model for a mobile wide-angle camera by modifying the distance and aspherical curvature between lenses. The TTL was set to ±7 mm and the thickness was minimized by reducing the number of lens surfaces to five. MTF performance aimed to achieve more than 60% of the 120 lp/ mm spatial frequency at FOV 72o. Later, optical performance was evaluated through MTF and aberration graphs of the designed optical system. Results: Optical system design analysis showed that the MTF performance was 312.5 lp/mm at FOV 72o, achieving a value of 20% or more, and a value of 60% or more at 120 lp/mm spatial frequency, satisfying the design conditions. The light aberration was very low within 0.025 mm and the distortion aberration was up to –13.98%. This is a common problem with wide-angle lenses in small display systems and has been effectively corrected through software correction technology. Conclusions: In this study, a high-resolution mobile wide-angle lens with minimal thickness was designed using aspherical lenses. Although it provided high image quality at the basic viewing angle and showed relatively high distortion aberration, it could be supplemented with software correction technology. Mobile wide-angle lenses need continuous research and will contribute to the development of mobile lens technology.