1.
a concave lens [mirror]
凹透镜 [凹面镜]
2.
meniscus (shaped) lens
凹凸透镜，弯月形透镜
3.
aplanat [aplanatic] lens
消球差透镜，齐明透镜
4.
air-spaced doublet
双不胶透镜; 双分离透镜; 双分透镜; 空气隙双合透镜; 分离式双透镜
5.
manual zoom lens
(镜头)手控可变焦距透镜
6.
opticians' lens measurer
眼镜制造者用透镜表
7.
A planoconvex lens used to concentrate light.
凸透镜用来聚光的凸镜
8.
Any of the lenses, prisms, or mirrors of an optical instrument.
光学镜光学仪器的透镜、棱镜或平面镜
9.
metal-plate lens
(天线) 金属板透镜
10.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
11.
Schlieren projection lens
施利仑投影透镜，纹影摄影投影透镜
12.
Shaped like a biconvex lens.
双凸透镜状的形状像双凸透镜的
13.
The principal points of a thin lens coincide at the center of the lens.
薄透镜的两个主点与透镜中心相重合。
14.
The lens or lens group closest to the eye in an optical instrument;an ocular.
目镜光学仪器中靠近眼睛的透镜或透镜组；窥孔
15.
A single lens in a pair of glasses; a monocle.
单片眼镜一对眼镜片中的一个单透镜；单片眼镜
16.
lens center thickness gauge
透镜中心厚度测量规
17.
metal(lic) delay lens
(天线)金属延迟透镜
18.
flat-top plastic bifocal
平顶塑料双焦点透镜