发明名称 |
SQUARE ANTI-SYMMETRIC UNIFORMLY REDUNDANT ARRAY CODED APERTURE IMAGING SYSTEM |
摘要 |
A square anti-symmetric uniformly redundant array coded aperture includes transparent and opaque cells and exhibits a normal mask pattern at a first position and a complementary mask pattern when rotated to a second position rotationally offset by 90 DEG from the first position. The coded aperture is used in a system for imaging a source of non-focusable radiation such as gamma rays or x-rays. The imaging system includes the coded aperture (22) for receiving the radiation (20) emitted by the source and generating coded shadows therefrom at the two positions, a rotating platform (24) and motor (30) for rotating the coded aperture between the two positions, a position sensitive detector (10) generating coded optical signals of the shadows sequentially impinging thereon, an optical signal converter (34) generating coded electrical signals of the optical signals, and a signal processor (14) decoding the electrical signals and generating an image signal of the source of non-focusable radiation.
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申请公布号 |
WO9726557(A1) |
申请公布日期 |
1997.07.24 |
申请号 |
WO1997US00527 |
申请日期 |
1997.01.14 |
申请人 |
AIL SYSTEMS, INC. |
发明人 |
CHIOU, WALTER;AUGERI, RICHARD, C. |
分类号 |
G01T1/20;G01T1/167;G01T1/29;(IPC1-7):G01T1/20 |
主分类号 |
G01T1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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