Diffractive optical elements for generating arbitrary line foci

Details Diffractive optical elements for generating arbitrary line foci Diffractive optical elements for generating arbitrary line foci

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993boot.conf...99m&link_type=abstract

In NASA. Marshall Space Flight Center, Conference on Binary Optics: An Opportunity for Technical Exchange p 99-105 (SEE N94-1733

Physics

Optics

Diffraction, Doppler Radar, Foci, Lenses, Magnification, Optical Equipment, Refractivity, Telescopes, Wavelet Analysis, Conics, Fabrication

Scientific paper

The key optical component in the architecture of the linearly variable magnification telescope presented here is a conical lens. This architecture has application to Doppler radar processing and to wavelet processing. Unfortunately, the unique surface profile of a conical lens does not allow traditional grinding techniques to be used for fabrication; therefore, its fabrication is considered custom. In addition to the requirement of custom fabrication, a refractive conical lens introduces phase aberrations that are intrinsic to its conic shape. Further, due to the large prismatic component of the lens, the variable magnification telescope architecture is off-axis. To overcome the fabrication and application difficulties of a refractive lens, we consider the construction of a hybrid diffractive-refractive lens.

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