retrofocus meaning in English

负焦距
焦点后移

In the retrofocus project , a retrofocus structure with two elements is used in the object lens to enlarge fov and back working distance , in the head of which the negative meniscus have the effect of balancing aberration and deviating rays like a prism . and a standard hyperhemisphere immersion lens with high refractive index is put behind the object lens to satisfy the receiving of a detector with smaller photosensitive
反远距设计方案中物镜采用二片式反远距结构,增大了视场和后工作距离,弯月型负透镜在前,具有平衡像差和棱镜的偏向作用;物镜后放置高折射率标准超半球型浸没透镜,满足小光敏面探测器接收。
Two kinds of improved design project are proposed : retrofocus project and image telecentric project . original structures are solved through gauss optics and primary aberration principle , and the aberration is optimized and analyzed too . to form staring opto - electronic countermeasure device , distributing of optical unit array is simply analyzed in the end
针对初始设计方案的不足,提出两种改进的设计方案:反远距方案和像方远心方案,通过高斯光学和初级像差理论求解出光学系统初始结构,利用光学设计软件进行像差分析和优化,并且对设计的光学系统组成凝视型光电对抗设备时光学单元阵列分布进行了简单分析。