In 1896 Carl Zeiss presented its Planar lens. This lens type is still found in many professional optical tools for photography on Earth and in space.

1896年卡尔蔡司普兰那结构镜头亮相，这种镜头结构至今仍能在不少地球和太空中摄影用专业光学镜片上见到。

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A more integrated theory of design and analysis has been established for the sake of developing the condensing lens type large aperture Frensnel lens.

建立了一套较完整的大口径聚光镜型菲涅耳透镜设计和分析理论。

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Subminiature solid state lamp. Super bright red (peak wavelength 660 nm). Lens type red diffused.

微型固态灯。超级鲜艳的红色(峰值波长660纳米)。镜头类型红色扩散。

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Xerox built machines that scanned a printed page of type using a photographic lens, and then printed a duplicate.

NEWYORKER: Creation Myth

She may want to check your eyes and remove the lens for you (and possibly suggest a different type of contacts).

CNN: How can I safely remove a stuck contact lens?