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Applied Optics

Applied Optics


  • Vol. 37, Iss. 16 — Jun. 1, 1998
  • pp: 3401–3407

Point-spread function for binary diffractive lenses fabricated with misaligned masks

Yasuyuki Unno  »View Author Affiliations

Applied Optics, Vol. 37, Issue 16, pp. 3401-3407 (1998)

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The influence of mask-alignment errors on the fabrication of four-level binary lenses has been investigated. The pupil function was derived as a function of the amount of misalignment between the two mask patterns based on scalar diffraction theory. It was found that the phase term in the pupil function affects only the location of the point-spread function, whereas the uneven light transmittance degrades the image quality in the direction of the misalignment. The Strehl intensity was found to decrease almost linearly with respect to the amount of error.

© 1998 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(110.3000) Imaging systems : Image quality assessment

Original Manuscript: August 4, 1997
Revised Manuscript: January 23, 1998
Published: June 1, 1998

Yasuyuki Unno, "Point-spread function for binary diffractive lenses fabricated with misaligned masks," Appl. Opt. 37, 3401-3407 (1998)

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