A Design of Wide Angle Camera lens for Dashcam

• Main Authors: LO, CHIEN-WEI, 羅健瑋
• Other Authors: LIN, CHING-HUANG
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/2nb4jm

碩士 === 國立雲林科技大學 === 電子工程系 === 106 === In recent years, the dashboard camera has been widely used. Good dashboard camera can provide more image information with wide-angle lens. This paper uses optical software Zemax to design the wide-angle lens. The proposed wide-angle lens is designed to be 80-degree incident from half angle, which will reduce the imaging surface of the relative illumination. Control degree is very important in the process of optimization. Because the barrel distortion will cause the image surface to be extruded, F- theta distortion is used instead of optical distortion. The wide-angle lens uses five spherical glass lenses and a aspherical plastic lens in this study. A sensor with 2 million pixels is used. The half-angle incident light reaches 80 degrees, F/# is 2.4, and the lens length is 22.41 mm. Relative illumination is greater than 80% in the whole field of view, The transverse chromatic aberration is less than 1.75μm, and the MTF at the full field is more than 0.5 at 142lp/mm.