适于逆光条件的消鬼像镜头光学设计与实验验证  

Optical Design and Experimental Verification of a Reduced Ghost Image Lens for Backlight Condition

作　　者：石荣宝[1,2] 季轶群[1,2] 赵知诚[1,2] 周建康[1,2] 沈为民[1,2] 唐敏学[1,2] 

机构地区：[1]苏州大学物理与光电.能源学部光电信息科学与工程学院,江苏苏州215006 [2]江苏省现代光学技术重点实验室,江苏苏州215006

出　　处：《光学学报》2014年第9期222-229,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61078043);江苏省高校优势学科建设工程(PAPD)

摘　　要：鬼像是逆光照明下影响光学镜头成像清晰度、对比度的主要原因,为减少其影响,研究典型匹兹万镜头的消鬼像问题。运用近轴矩阵光学理论,详细分析讨论匹兹万镜头的鬼像特性,给出抑制方法。根据使用要求,优化设计和研制了消鬼像光学镜头,像质评价结果表明鬼像能量低且分布均匀,具有接近衍射极限的成像性能。逆光照明下的成像结果表明,研制的镜头具有优异的鬼像抑制性能,验证了设计和分析的正确性。给出的鬼像抑制方法可用于其他光学系统。Ghost image is the main factor which degrades imaging definition and contrast of lenses under backlight illumination. In order to avoid its influence, a reduced ghost image lens with typical Petzval lens is studied. With matrix paraxial optical theory, characteristics of the ghost image are discussed and analyzed in detail, and then suppression method is suggested. According to application requirement, a ghost image reduced lens is optimized and developed. Evaluation of the designed lens＇s image quality shows that the ghost image intensity is low and uniform, but its imaging performance is close to diffraction limit. Imaging result under backlight illumination shows that the developed lens has excellent suppression performance of ghost image. The correctness of design and analysis are verified. The suggested suppression method is potential for reducing ghost image of other optical systems.

关 键 词：光学设计 匹兹万镜头 近轴矩阵光学 鬼像 

分 类 号：TH74[机械工程—光学工程]