Optical: systems and elements – Diffraction
Reexamination Certificate
2006-09-12
2006-09-12
Assaf, Fayez G. (Department: 2872)
Optical: systems and elements
Diffraction
C359S563000, C359S011000, C359S559000, C382S210000, C382S312000
Reexamination Certificate
active
07106510
ABSTRACT:
The present invention provides improved Wavefront Coding imaging apparatus and methods composed of optics, a detector, and processing of the detected image. The optics are constructed and arranged to have the characteristic that the transverse ray intercept curves form substantially straight, sloped lines. The wavefront coding corrects for known or unknown amounts of “misfocus-like” aberrations by altering the optical transfer function of the imaging apparatus in such a way that the altered optical transfer function is substantially insensitive to aberrations. Post processing then removes the effect of the coding, except for the invariance with regard to aberrations, thereby producing clear images.
REFERENCES:
patent: 6940649 (2005-09-01), Dowski, Jr.
Assaf Fayez G.
Lathrop & Gage LC
The Regents of the University of Colorado
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