eyepiece

名词 eyepiece:

1. combination of lenses at the viewing end of optical instruments
   同义词：ocular

eye.piece

n.（名词）
The lens or lens group closest to the eye in an optical instrument; an ocular.Also called eyeglass
目镜：光学仪器中靠近眼睛的透镜或透镜组；窥孔也作 eyeglass