Artículo
High depth of focus by combining annular lenses
Fecha de publicación:
12/2006
Editorial:
Elsevier Science
Revista:
Optics Communications
ISSN:
0030-4018
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
Palabras clave:
Phase Modulation
,
Apodization
,
Depth of Focus
,
Resolution
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Ledesma, Silvia Adriana; Escalera, J. C.; Campos, Juan; Mazzaferri, Javier E.; Yzuel, María J.; High depth of focus by combining annular lenses; Elsevier Science; Optics Communications; 266; 1; 12-2006; 6-12
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