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首页> 外文会议>Instrumentation Science and Technology vol.2 >A New Way of Fabricating Spectacle Lens Using Binary Diffraction Optics Technology
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A New Way of Fabricating Spectacle Lens Using Binary Diffraction Optics Technology

机译：利用二元衍射光学技术制造眼镜镜片的新方法

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Different from a conventional spectacle lens which consists of two spherical or aspheric surfaces, this kind of spectacle lens consists of one plane surface and a binary diffraction surface, which significantly reduces their thickness and weight. A theoretical design method was developed and a diffraction efficiency formula was established for the binary surface. A binary spectacle lens with a four discrete phase-step binary surface was fabricated using lithography and RIBE (reaction iron beam etching) technology. Experimental results indicate that the spectacle lens fabricated in this way can achieve the same diopters as a conventional spectacle lens, and it can be made much thinner although the spectacle lens has large chromatic variations and low diffraction efficiency problems. Refractive/diffractive hybrid optical design or harmony diffraction can be used to reduce the chromatic variations, and more binary phase steps can be used to increase the diffraction efficiency.
机译：与传统的由两个球面或非球面构成的眼镜片不同，这种眼镜片由一个平面和一个二元衍射面组成，从而大大减小了它们的厚度和重量。建立了理论设计方法，建立了二元表面的衍射效率公式。使用光刻技术和RIBE（反应铁束刻蚀）技术制造了具有四个离散相阶二元表面的二元眼镜片。实验结果表明，以这种方式制造的眼镜镜片可以实现与传统眼镜镜片相同的屈光度，并且尽管该眼镜镜片具有较大的色差和低的衍射效率问题，但仍可以做得更薄。可以使用折射/衍射混合光学设计或和声衍射来减少色差，并且可以使用更多的二元相阶跃来提高衍射效率。

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