converging meniscus

Collimating ability limitation of meniscus lenses in collimating laser diodes;

凹凸透镜准直半导体激光器的极限

meniscus (shaped) lens

凹凸透镜，弯月形透镜

Having greater curvature on the convex side than on the concave side.Used of a lens.

凸凹的凸面比凹面曲度更大的。用来指透镜

Having greater curvature on the concave side than on the convex side.Used of a lens.

凹凸的凹面曲率大于凸面曲率的。用于指透镜

a concave lens [mirror]

凹透镜 [凹面镜]

Just as a double convex lens enlarges, so a double concave lens reduces.

正象双凸透镜可以放大那样，双凹透镜也可以缩

A New Method to Measure Optics Parameter of Plano-convex Lens and Plane-concave Lens

一种测定平凸、平凹透镜光学参量的新方法

Just as a double convex lens enlarges, so a double concave lens reduces

正象双凸透镜可以放大那样，双凹透镜也可以缩小。

A planoconvex lens used to concentrate light.

凸透镜用来聚光的凸镜

Shaped like a biconvex lens.

双凸透镜状的形状像双凸透镜的

A convex lens is used to concentrate rays of light.

凸透镜用于聚集光线。

Disappearing and Returning: To Commemorate the Great Author of Zhou Wen from a Historical Perspective;

失踪与回归——历史凹凸镜下的作家周文

large concave mirror produces image that is magnified by the eyepiece.

由目镜产生放大图像的大的凹透镜。

aberration of the concave mirror is reduced by a meniscus lens.

用半月板镜头减少凹透镜的过失。

Light reflected from the surface of the mirror, instead of passing through a curved glass lens.

光线受镜面的反射，而不是穿过凹凸的玻璃镜头。

large convex lens produces image that is viewed through the eyepiece.

通过目镜观察物体图像的大的凸透镜。

Convex on one side and concave on the other.

凸凹的一面凸一面凹的

a single convex lens is used to produce an enlarged image.

能够产生放大图像的单个凸透镜。

He focused the sun's rays on a paper with a burning-glass.

他用一面凸透镜把阳光聚焦在纸上。