Title:
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Diffraction theory of Fresnel lenses encoded in low-resolution devices
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Author:
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Carcolé i Carrubé, Eduard; Bosch i Puig, Salvador; Campos Coloma, Juan
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Difracció -Òptica electrònica -Diffraction -Electron optics |
Rights:
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(c) Optical Society of America, 1994
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Document type:
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Article Article - Published version |
Published by:
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Optical Society of America
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