Appeal No. 1998-0818
Application No. 08/319,143
On page 9 of the specification, Appellants describe the
amplitude encoded filter as having "a transmissivity which
increases along radial lines extending from a central portion
of the filter." On page 12 of the specification, Appellants
identify that the phase encoded filter can be either a binary
phase filter, a ternary filter or a amplitude encoded binary
phase filter. The coding of these three filter types is
described on page 15 of Appellants’ specification.
Independent claims 11 and 13 are representative of the
invention and read as follows:
11. A pseudo deconvolving method for
recovering an optical image, which has been
distorted by its convolution with a distortion
function, by the convolution of the Fourier
transformed distorted image with a filter
approximating the reciprocal of the Fourier
transformed distortion function comprising the
steps of:
(a) producing a Fourier transform of a
wavefront distorted optical image at a Fourier
transform plan;
(b) approximating the exact phase portion
of the reciprocal Fourier transform of the
distortion function with a phase encoded filter
having the form selected from the group
consisting essentially of a binary phase coded
filter, a ternary phase coded filter, and an
amplitude coded filter having a shifted
distortion function;
3
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