摘要
结合火星上的特殊环境及成像要求,采用"非相似"成像原理,设计了一种用于火星探测的危险回避相机鱼眼物镜。该物镜的焦距4.5 mm,F#为15,系统总长43 mm,观察范围从无穷远到200 mm。仅采用三片分离透镜构成的反远距镜组,实现180°的大视场,且无胶合面和非球面。在奈奎斯特频率40 lp/mm时,MTF曲线接近衍射极限。既保证了成像质量,又做到了镜组简单、结构小巧,具有很高的实用价值。
Combined with the special environment on mars and imaging requirements, a fish-eye lens of hazard avoidance cameras for mars exploration using non-similar imaging principle is designed. The objective lens focal length of 4. 5 mm, F#15, total length of 43 mm, the observed range from infinity to 200 mm. It use inverted tele- photo lens group only with three separation lens to achieve the field of view of 180°, and no glue surface and non- spherical. Modulation transfer function close to diffraction limit at the Nyquist frequency 40 lp/mm. Both to ensure the quality of imaging, and lens group is simple and compact. It has a high practical value.
出处
《科学技术与工程》
北大核心
2012年第34期9333-9336,共4页
Science Technology and Engineering
