摘要
在鱼眼镜头成像系统中,光线以很大的入射角打在前组透镜表面时往往会造成严重的像差,为了压缩超大视场角,提出应用非球面前组负弯月型透镜来控制鱼眼镜头系统的像差。基于光学前组具有平面对称的成像特性,应用平面对称光学系统像差理论发展的评价函数,对非球面系数及其他的系统结构参数进行优化设计。应用评价函数及Zemax光线追迹成像模拟对优化系统进行评估。研究表明,应用非球面组负弯月型透镜能够显著地提高鱼眼镜头的成像质量。
To reduce the ultra-wide field angle,apre-optics group that consists of several negative meniscus lenses of large power in a fisheye lens is used.The large incidence angle of light at these negative meniscus lenses will result in very serious aberrations.In the paper,the aspheric pre-optics design is proposed to control the aberrations of fisheye system.Based on the plane-symmetry imaging properties of the pre-optics,the evaluation function developed with the aberration theory of plane-symmetry optical systems is applied to optimize the aspheric coefficients of pre-optics surface as well as other parameters of the optical system.The imaging performances of different design options are evaluated with the evaluation function and ray-tracing simulation of Zemax.The results show that the fisheye lens optimized with aspheric pre-optics has significantly better imaging quality.
出处
《光学仪器》
2015年第5期407-413,430,共8页
Optical Instruments
基金
国家自然科学基金项目(11274223)
上海市教委创新基金项目(12ZZ088)
关键词
光学设计
鱼眼镜头
平面对称
非球面
像差
optical design
fisheye lens
plane symmetry
aspheric surface
aberrations
