Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1996-01-16
1997-02-25
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
382281, G01T 1202
Patent
active
056061650
ABSTRACT:
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.degree. from the first position. The coded aperture is utilized in a coded aperture imaging system for imaging a source of non-focusable radiation such as a gamma ray or x-ray emitting source. Such a coded aperture imaging system basically includes a square anti-symmetric uniformly redundant array coded aperture for receiving radiation emitted by a source and generating a first coded shadow therefrom at the first position, and a second coded shadow therefrom at the second position, a rotating platform and motor for rotating the coded aperture between the first and second position, a position sensitive detector situated with respect to the coded aperture to allow the first and second coded shadows to sequentially impinge on the detector, the detector respectively generating a first coded optical signal and a second coded optical signal in response thereto, an optical signal convertor responsive to the first and second coded optical signals and respectively generating a first coded electrical signal and a second coded electrical signal in response thereto and a signal processor responsive to the first and second coded electrical signals and decoding the coded electrical signals to generate an image signal which is representative of an image of the source of non-focusable radiation.
REFERENCES:
patent: 3961191 (1976-06-01), Stoner et al.
patent: 4092540 (1978-05-01), Barrett
patent: 4146295 (1979-05-01), Fonrojet et al.
patent: 4165462 (1979-08-01), Macovski et al.
patent: 4209780 (1980-06-01), Fenimore et al.
patent: 4360797 (1982-11-01), Fenimore et al.
patent: 4370750 (1983-01-01), Hoover
patent: 4389633 (1983-06-01), Fenimore
patent: 4435838 (1984-03-01), Gourlay
patent: 4521688 (1985-06-01), Yin
patent: 4791300 (1988-12-01), Yin
patent: 4891844 (1990-01-01), Kiri
patent: 5012499 (1991-04-01), Vali et al.
patent: 5099128 (1992-03-01), Stettner
patent: 5103098 (1992-04-01), Fenyves
patent: 5122671 (1992-06-01), Buchanan et al.
patent: 5144141 (1992-09-01), Rougeot et al.
patent: 5171998 (1992-12-01), Engdahl et al.
patent: 5235191 (1993-08-01), Miller
patent: 5286973 (1994-02-01), Westrom et al.
patent: 5308986 (1994-05-01), Walker
M. L. McConnell et al., "A Coded Aperture Gamma Ray Telescope", IEEE Transaction on Nuclear Science, vol. NS-29, No. 1, pp. 155-159 (1982).
A. J. Dean, "Imaging Systems For Low Energy .gamma.-ray Astronomy", Nuclear Instruments and Methods in Physics Research, 221, pp. 265-277 (1984).
J. L. Matteson, "The Nuclear Astrophysics Explorer", Adv. Space Res., vol. 11, No. 8, pp. (8)369-(8)378 (1991).
Donald A. Kniffen, "The Gamma-Ray Universe", American Scientist, 81, pp. 342-349 (Jul.-Aug. 1993).
Ziock, et al., "A Gamma-Ray Imager for Arms Control", IEEE Transactions on Nuclear Science, 39, No. 4, (1992).
Garcia, et al., "Development of the EXITE detector: A new Imaging Detector for 20-300 keV Astronomy", IEEE Transactions on Nuclear Science, 33, No. 1, (Feb. 1986).
Roziere, et al., "Large-Field-of-View Image-Intensifier Gamma-Camera Detectors Using A Silicon X Y Scintillation Localizer", IEEE Transactions on Nuclear Science, NS-28, No. 1, (Feb. 1981).
Augeri Richard C.
Chiou Walter C.
AIL Systems Inc.
Hannaher Constantine
LandOfFree
Square anti-symmetric uniformly redundant array coded aperture i does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Square anti-symmetric uniformly redundant array coded aperture i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Square anti-symmetric uniformly redundant array coded aperture i will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1975761