Polishing optical lenses using pitch.

用沥青抛光精密光学透镜。

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A new high precision method is proposed to measure free-form optical lenses on line.

为达到高精度测量，提出一种可用于自由曲面光学透镜在线光学测量方法。

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The study of plane pure-phase equi-width ring diffractive optical lenses is reported.

报道二维纯位相环带衍射光学透镜的研究。

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You can swap out the removable sunglass lenses for clear versions, or throw in your prescription in daylight (tinted) or indoor flavors, since many optical stores stock appropriately sized lenses.

ENGADGET: Insert Coin: Eyez 720p video-recording glasses (video)

Applying optical theory to O. wendtii lenses suggests that they would, indeed, behave in that way.

ECONOMIST: Brittlestar eyes

Reeve's Superman soared thanks to a combination of traditional wirework, optical processing and the synchronising of zoom lenses in camera and projector.

BBC: By James Christie