The shape of Fresnel lens. Fresnel lens is made by removing the

Download scientific diagram | The shape of Fresnel lens. Fresnel lens is made by removing the non-refractive part of a conventional lens, leaving the lens with a thin profile. (A) Side. (B) Front.  from publication: Clinical Usefulness of Fresnel Ganzfeld Stimulator | | ResearchGate, the professional network for scientists.

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