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Applied Optics

Applied Optics


  • Vol. 34, Iss. 14 — May. 10, 1995
  • pp: 2469–2475

Harmonic diffractive lenses

Donald W. Sweeney and Gary E. Sommargren  »View Author Affiliations

Applied Optics, Vol. 34, Issue 14, pp. 2469-2475 (1995)

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The harmonic diffractive lens is a diffractive imaging lens for which the optical path-length transition between adjacent facets is an integer multiple m of the design wavelength λ0. The total lens thickness in air is mλ0/(n − 1), which is m times thicker than the so-called modulo 2π diffractive lens. Lenses constructed in this way have hybrid properties of both refractive and diffractive lenses. Such a lens will have a diffraction-limited, common focus for a number of discrete wavelengths across the visible spectrum. A 34.75-diopter, 6-mm-diameter lens is diamond turned in aluminum and replicated in optical materials. The sag of the lens is 23 μm. Modulation transfer function measurements in both monochromatic and white light verify the performance of the lens. The lens approaches the diffraction limit for 10 discrete wavelengths across the visible spectrum.

© 1995 Optical Society of America

Original Manuscript: August 19, 1994
Revised Manuscript: November 21, 1994
Published: May 10, 1995

Donald W. Sweeney and Gary E. Sommargren, "Harmonic diffractive lenses," Appl. Opt. 34, 2469-2475 (1995)

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  1. D. W. Sweeney, G. Sommargren, “Single element achromatic lens,” in Diffractive Optics, Vol. 11 of 1994 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1994), pp. 26–29.
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  10. Finish 2001 Car Polish, distributed by Turtle Wax Inc., Chicago, Ill., 60638-6211.

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