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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 14, Iss. 7 — Jul. 1, 1997
  • pp: 1599–1606

Relaxed fabrication tolerances for low-Fresnel-number lenses

Thomas Hessler and Rino E. Kunz  »View Author Affiliations


JOSA A, Vol. 14, Issue 7, pp. 1599-1606 (1997)
http://dx.doi.org/10.1364/JOSAA.14.001599


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Abstract

Numerical simulations have been performed to study the influence of resist-developing errors on continuous-relief microlenses. For very low Fresnel numbers (N<4), the focal shift counteracts changes in the radius of curvature that are due to the depth errors and stabilizes the focal length. For higher Fresnel numbers (N>2), the focal length is essentially determined by the diffraction at the lateral pattern of the segments, and deviations from the ideal blaze influence only the efficiency. A qualitative picture based on Fourier optics is given to explain these markedly relaxed tolerances with respect to depth errors for planar optical elements and even for low Fresnel numbers.

© 1997 Optical Society of America

History
Original Manuscript: September 5, 1996
Revised Manuscript: January 29, 1997
Manuscript Accepted: January 29, 1997
Published: July 1, 1997

Citation
Thomas Hessler and Rino E. Kunz, "Relaxed fabrication tolerances for low-Fresnel-number lenses," J. Opt. Soc. Am. A 14, 1599-1606 (1997)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-14-7-1599

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