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Diffraction theory of optimized low-resolution Fresnel encoded lenses

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A mathematical model describing the behavior of low-resolution Fresnel encoded lenses (LRFEL's) encoded in any low-resolution device (e.g., a spatial light modulator) has recently been developed. From this model, an LRFEL with a short focal length was optimized by our imposing the maximum intensity of light onto the optical axis. With this model, analytical expressions for the light-amplitude distribution, the diffraction efficiency, and the frequency response of the optimized LRFEL's are derived.

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CARCOLÉ I CARRUBÉ, Eduard, et al. Diffraction theory of optimized low-resolution Fresnel encoded lenses. Applied Optics. 1994. Vol. 34, num. 26, pags. 5952-5960. ISSN 0003-6935. [consulted: 9 of September of 2026]. Available at: https://hdl.handle.net/2445/24262

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