Schmidt结构的改进型龙虾眼光学透镜研究

Improved lobster eye lens based on Schmidt geometry

龙虾眼光学是解决大视场高能射线聚焦的关键技术。从成像光学的视角考察了龙虾眼光学系统的成像原理,制作完成了基于Schmidt结构的改进型龙虾眼光学透镜原理样机,并对该系统在可见光波段的性能进行了测试。该龙虾眼透镜由厚度为300μm的抛光铝板作为反射工作面,反射面成扇形排布,并具有完全对称的球形结构;反射面间夹角由特殊加工的角间距27.6′的楔板保证。原理样机的有效焦距为65 mm,中心张角为17.48°×17.48°,其在空间各个方向上的成像能力几乎相同,可以满足空间大视场探测系统的任务需求。

The lobster eye optics is the key technology that could achieve high energy ray imaging with a large field of view. The focusing principle of the lobster lens was explained in the viewpoint of optical imaging. The improved lobster eye lens prototype which was based on the Schmidt geometry was made, and the testing of this system within visible light was finished. The reflection working surfaces of this lobster lens prototype were made of polished aluminum plates with 300 μm thickness. And the reflectors were arranged into fan shape; the whole lobster eye lens prototype was completely spherical symmetric structure. The angle 27.6′ between reflectors were generated by the special wedge plates. The focal length of the prototype is 65 mm and center angle is17.48°×17.48°. The imaging ability of the system on every direction had much the same effect. It can meet the required of the large field detection task in space.