Optical element and system using the same

An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/o...

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Bibliographic Details
Main Authors Kathman, Alan D, Koehler, Charles S, Welch, William H, Johnson, Eric G, Tekolste, Robert D
Format Patent
LanguageEnglish
Published 05.05.2009
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Summary:An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical element may include a light source and/or a detector.