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First, the team placed two concave mirrors 1 micrometre apart, and filled the lens-shaped cavity between them with a red liquid dye.
首先，实验小组放置了两面相距一微米的凹镜并向其间透镜状的中空部分填充一种红色液体染料。
We fabricated a large computer-generated holography on a concave lens surface to test the convex secondary mirrors surface.
在凹透镜表面上制作出了用于凸非球面检测的曲面全息图。
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