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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 3 — Feb. 5, 2007
  • pp: 910–923

Design and fabrication of random phase diffusers for extending the depth of focus

E. Efrén García-Guerrero, Eugenio R. Méndez, Héctor M. Escamilla, Tamara A. Leskova, and Alexei A. Maradudin  »View Author Affiliations

Optics Express, Vol. 15, Issue 3, pp. 910-923 (2007)

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We present a method for designing non-absorbing optical diffusers that, when illuminated by a converging beam, produce a specified intensity distribution along the optical axis. To evaluate the performance of the diffusers in imaging systems we calculate the three-dimensional distribution of the mean intensity in the neighborhood of focus. We find that the diffusers can be used as depth-of-focus extenders. We also propose and implement a method of fabricating the designed diffusers on photoresist-coated plates and present some experimental results obtained with the fabricated diffusers.

© 2007 Optical Society of America

OCIS Codes
(110.2990) Imaging systems : Image formation theory
(290.5880) Scattering : Scattering, rough surfaces

ToC Category:
Imaging Systems

Original Manuscript: September 18, 2006
Revised Manuscript: November 3, 2006
Manuscript Accepted: January 11, 2007
Published: February 5, 2007

E. E. García-Guerrero, Eugenio R. Méndez, Héctor M. Escamilla, Tamara A. Leskova, and Alexei A. Maradudin, "Design and fabrication of random phase diffusers for extending the depth of focus," Opt. Express 15, 910-923 (2007)

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