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Ledesma, S.; Escalera, J.C.; Campos, J.; Mazzaferri, J.; Yzuel, M.J. "High depth of focus by combining annular lenses" (2006) Optics Communications. 266(1):6-12
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Abstract:

In some technological applications, optical systems that produce a high depth of focus and superresolving transversal responses are required. In this paper we present a pupil design consisting in a phase pupil with binary amplitude, that added to a conventional optical system, can accomplish these goals. The pupil function is characterized by a complex amplitude that consists basically in combining two annular lenses with different focal length. Meanwhile the central portion of the pupil has an amplitude equal to 0, the external portion is modulated with two quadratic phases each one covering an annular zone. One of the phases corresponds to a convergent lens and the other to a divergent lens. The effect on the incident wavefront is to redirect the light in front of and behind the best image plane (BIP) producing a widened focus. The evolution of the transverse gain for the extended focus is also studied. Experimental results are given, and they confirm the extended focus and the superresolving behavior of the proposed pupil function. © 2006 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:High depth of focus by combining annular lenses
Autor:Ledesma, S.; Escalera, J.C.; Campos, J.; Mazzaferri, J.; Yzuel, M.J.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Departamento de Física, Universidad Autónoma de Barcelona, 08193 Bellaterra, Spain
Palabras clave:Apodization; Depth of focus; Phase modulation; Resolution; Focusing; Image analysis; Lenses; Optical resolving power; Phase modulation; Problem solving; Annular lenses; Apodization; Best image plane (BIP); Depth of focus; Optical systems
Año:2006
Volumen:266
Número:1
Página de inicio:6
Página de fin:12
DOI: http://dx.doi.org/10.1016/j.optcom.2006.04.032
Título revista:Optics Communications
Título revista abreviado:Opt Commun
ISSN:00304018
CODEN:OPCOB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00304018_v266_n1_p6_Ledesma

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Citas:

---------- APA ----------
Ledesma, S., Escalera, J.C., Campos, J., Mazzaferri, J. & Yzuel, M.J. (2006) . High depth of focus by combining annular lenses. Optics Communications, 266(1), 6-12.
http://dx.doi.org/10.1016/j.optcom.2006.04.032
---------- CHICAGO ----------
Ledesma, S., Escalera, J.C., Campos, J., Mazzaferri, J., Yzuel, M.J. "High depth of focus by combining annular lenses" . Optics Communications 266, no. 1 (2006) : 6-12.
http://dx.doi.org/10.1016/j.optcom.2006.04.032
---------- MLA ----------
Ledesma, S., Escalera, J.C., Campos, J., Mazzaferri, J., Yzuel, M.J. "High depth of focus by combining annular lenses" . Optics Communications, vol. 266, no. 1, 2006, pp. 6-12.
http://dx.doi.org/10.1016/j.optcom.2006.04.032
---------- VANCOUVER ----------
Ledesma, S., Escalera, J.C., Campos, J., Mazzaferri, J., Yzuel, M.J. High depth of focus by combining annular lenses. Opt Commun. 2006;266(1):6-12.
http://dx.doi.org/10.1016/j.optcom.2006.04.032