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Title: Diffraction theory of Fresnel lenses encoded in low-resolution devices
Author: Carcolé i Carrubé, Eduard
Bosch i Puig, Salvador
Campos Coloma, Juan
Keywords: Difracció
Òptica electrònica
Electron optics
Issue Date: 1994
Publisher: Optical Society of America
Abstract: A mathematical model that describes the behavior of low-resolution Fresnel lenses encoded in any low-resolution device (e.g., a spatial light modulator) is developed. The effects of low-resolution codification, such the appearance of new secondary lenses, are studied for a general case. General expressions for the phase of these lenses are developed, showing that each lens behaves as if it were encoded through all pixels of the low-resolution device. Simple expressions for the light distribution in the focal plane and its dependence on the encoded focal length are developed and commented on in detail. For a given codification device an optimum focal length is found for best lens performance. An optimization method for codification of a single lens with a short focal length is proposed.
Note: Reproducció del document publicat a:
It is part of: Applied Optics, 1994, vol. 33, núm. 2, p. 162-174
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ISSN: 0003-6935
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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