这种镜子在灯塔较为常见，需要更大，更薄的镜片来放大光线。

These are commonly found in lighthouses to magnify light in a way that would normally require a much larger, thicker lens.

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我一般选择最高级的防辐射镀膜镜片，并且挑选中薄的(我的个人验光处方上规定最薄最轻的镜片)。

Generally I pay for the highest level of non-glare coatings and I usually pick the middle of the thin-lens options (my personal prescription rules out the thinnest, lightest lenses).

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直板薄型手机镜片的美观要求很高，最好采用注射成型的方法来代替传统的型材切割加工方法。

Owing to high requirement aesthetic perception for the open-faced cellphone lens, injection moulding was more preferably adopted instead of traditional cutting process.

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