All-Optical Extended Focus Imaging System

Eyal Ben Eliezer; Zeev Zalevsky; Emanuel Marom; Naim Konforti

doi:10.1117/12.523808

All-Optical Extended Focus Imaging System

Eyal Ben Eliezer^*, Zeev Zalevsky, Emanuel Marom, Naim Konforti

^*Corresponding author for this work

Engineering General

Tel Aviv University

Research output: Contribution to journal › Conference article › peer-review

Abstract

A lens in conjunction with a multiplexed set of Fresnel lenses (FL) can significantly reduce the sensitivity of an optical system to defocus aberrations. Each FL is considered as a corrective lens with a slightly different focal length. Thus for a fixed detector plane, there is a set of object planes for which the composite lens provides perfect imaging. The various FLs are multiplexed using code division multiple access procedure. The resulting image is analyzed in this paper. One obtains a significant improvement of depth of field, albeit coupled with a reduction of resolution and image contrast.

Original language	English
Pages (from-to)	194-195
Number of pages	2
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4829 I
DOIs	https://doi.org/10.1117/12.523808
State	Published - 2003
Event	19th Congress of the International Commisssion for Optics Optics for the Quality of Life - Firenze, Italy Duration: 25 Aug 2002 → 30 Aug 2002

Keywords

CDMA
Defocus correction
Extended depth of field
Wave front coding

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10.1117/12.523808

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abstract = "A lens in conjunction with a multiplexed set of Fresnel lenses (FL) can significantly reduce the sensitivity of an optical system to defocus aberrations. Each FL is considered as a corrective lens with a slightly different focal length. Thus for a fixed detector plane, there is a set of object planes for which the composite lens provides perfect imaging. The various FLs are multiplexed using code division multiple access procedure. The resulting image is analyzed in this paper. One obtains a significant improvement of depth of field, albeit coupled with a reduction of resolution and image contrast.",

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author = "Eliezer, {Eyal Ben} and Zeev Zalevsky and Emanuel Marom and Naim Konforti",

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AU - Eliezer, Eyal Ben

AU - Zalevsky, Zeev

AU - Marom, Emanuel

AU - Konforti, Naim

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N2 - A lens in conjunction with a multiplexed set of Fresnel lenses (FL) can significantly reduce the sensitivity of an optical system to defocus aberrations. Each FL is considered as a corrective lens with a slightly different focal length. Thus for a fixed detector plane, there is a set of object planes for which the composite lens provides perfect imaging. The various FLs are multiplexed using code division multiple access procedure. The resulting image is analyzed in this paper. One obtains a significant improvement of depth of field, albeit coupled with a reduction of resolution and image contrast.

AB - A lens in conjunction with a multiplexed set of Fresnel lenses (FL) can significantly reduce the sensitivity of an optical system to defocus aberrations. Each FL is considered as a corrective lens with a slightly different focal length. Thus for a fixed detector plane, there is a set of object planes for which the composite lens provides perfect imaging. The various FLs are multiplexed using code division multiple access procedure. The resulting image is analyzed in this paper. One obtains a significant improvement of depth of field, albeit coupled with a reduction of resolution and image contrast.

KW - CDMA

KW - Defocus correction

KW - Extended depth of field

KW - Wave front coding

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - 19th Congress of the International Commisssion for Optics Optics for the Quality of Life

Y2 - 25 August 2002 through 30 August 2002

ER -

All-Optical Extended Focus Imaging System

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Keywords

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