Micro-Fresnel lens


A micro-lens structure resembling flattened out narrow rings.

As a micro-lens that has low aberrations, high efficiency, and high numerical aperture (NA), the micro-Fresnel lens is under research and development. The lens realizes a high NA by a single lens and is manu-factured by reproduction of an original lens pattern, which has been drawn by electron beam lithography on a glass substrate.


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