谐振腔一端为平面反射镜，一端为金属栅网。

One end is a plane mirror, the other is a metal mesh.

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平面反射镜的引入提高了角度测量的分辨率。

A reflecting mirror is introduced for increasing the measurement resolution.

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在光源系统中采用球面聚光镜和平面反射镜，可大幅提高光源的利用率。

Adopting spherical mirror and plane mirror can notablely improve the utilization of the light source in the system of light source.

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