激光技术2017，Vol.41Issue(2)：296-301,6.DOI:10.7510/jgjs.issn.1001-3806.2017.02.030
全向凝视光电成像系统鱼眼透镜的设计
Design of fisheye lens of omnidirectional gaze photoelectric imaging systems
刘帅 1牛燕雄 2刘海月1
作者信息
- 1. 北京航空航天大学 仪器科学与光电工程学院,北京 100191
- 2. 北京航空航天大学 精密光机电一体化教育部重点实验室,北京 100191
- 折叠
摘要
Abstract
In order to achieve imaging, detection and alarm of hemisphere space target by photoelectric imaging system, based on large field imaging and aberration theory, fisheye lens of optical system was theoretically analyzed and simulated by the scaling laws.The barrel distortion and stop coma were used to increase the illumination uniformity of image plane.The system axis aberration decreased by means of ray aiming iteration.Imaging quality of the system was evaluated and analyzed multiply.Distortion correction model of imaging lens was derived.The results show that, in visible spectrum, fisheye lens of excellent imaging quality is gotten, with the CCD effective size of 8.446mm×7.042mm, effective pixels of 2448×2050, entire field of view of 180° , focal length of 2.24mm, relative aperture of 1∶2.8, image plane illumination uniformity of over 90%, and mean square root radius value of diffuse spot diagram of less than 1/2 pixel.The modulation transfer function with spatial frequency of 145lp/mm is greater than 0.4.The omnidirectional gaze photoelectric imaging system can realize the real-time detection of hemisphere space target.关键词
光学设计/鱼眼镜头/像差校正/像面照度Key words
optical design/fisheye lens/aberration correction/image illumination分类
信息技术与安全科学引用本文复制引用
刘帅,牛燕雄,刘海月..全向凝视光电成像系统鱼眼透镜的设计[J].激光技术,2017,41(2):296-301,6.
