In this paper, a simple method for measure the refractive index of the thin lenses is presented.

提出了一种测定正、负透镜折射率的简单方法。

youdao

During injection the mold is allowed to breathe thereby overcoming many of the obstacles associated with injection molding very thin lenses.

在注射过程中，模具可以通气以克服与注塑非常薄的透镜相关联的许多障碍。

youdao

Dr Yabe's trick is to use relatively small Fresnel lenses-transparent and relatively thin planar lenses made up of concentric rings of prisms.

Yabe博士的诀窍是使用比较小的菲涅尔透镜——棱镜同心环构成的透明较薄的平面透镜。

youdao