negative meniscus meaning in Chinese

凹凸透镜
负液面
凸凹透镜
弯月形负透镜

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。