Mosaic of coded aperture arrays

DETAILED DESCRIPTION The present invention overcomes the disadvantages and limitations of the prior art by providing a mosaic of aperture arrays.
The present invention utilizes either a mosaic aperture or mosaic decoding array to overcome the associated disadvantages and limitations of disengagement and provide a decoded image with zero sidelobes and minimal artifacts.
In accordance with the present invention an imaging arrangement for a coded aperture imaging system comprises a mosaic array aperture formed from a basic r by s array enabling cyclic versions of the r by s array adjacent to and surrounding the basic r by s array, a source of nonfocusable radiation, and means for detecting an encoded image of the source of nonfocusable radiation, said encoded image formed from a plurality of overlapping images of the source of nonfocusable radiation produced by the mosaic array aperture on the means for detecting, said means for detecting having a detector area approximately equal to said basic r by s array, whereby the imaging arrangement is capable of off-axis imaging of the source of nonfocusable radiation while maintaining a complete cyclic version of the basic r by s array for all object points imaged on said means for detecting without increasing the detector area.
It is therefore an object of the present invention to provide a mosaic of aperture arrays.
It is also an object of the present invention to provide a mosaic of uniformly redundant coded aperture arrays.
It is also an object of the present invention to provide a mosaic of coded aperture arrays which minimizes detector size.
Another object of the present invention is to provide a mosaic of coded aperture arrays which contains complete imaging information within a section of the encoded image having a size the same as the projected shadow of the basic aperture pattern.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter.
The detailed description, indicating the preferred embodiment of the invention, is given only by way of illustration since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description