Lenses: Fresnel

Authored by: Michael D. Watson , Steven M. Scott

Encyclopedia of Optical and Photonic Engineering

Print publication date:  September  2015
Online publication date:  September  2015

Print ISBN: 9781439850978
eBook ISBN: 9781351247184
Adobe ISBN:

10.1081/E-EOE2-120009693

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Abstract

Fresnel lenses are commonly used in lighthouses, theatrical spotlights, and as the illumination plates for the ubiquitous overhead projector. The groove widths, besides being the most prominent characteristic in the appearance of a Fresnel lens, define the basic optical performance of the lens. Fabrication techniques vary considerably depending on the lens optical properties. Glass lenses are fabricated using glass-molding techniques. Plastic lenses are primarily fabricated by diamond turning.

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