Mask for coded aperture systems
First Claim
Patent Images
1. A coded aperture detector, comprising:
- a position sensitive detector configured to observe the location of emitted radiation; and
a mask disposed in front of the position sensitive detector, the mask comprising;
a non-linear shape configured to define a perimeter around the position sensitive detector;
a width less than or about equal to a width of the position sensitive detector; and
a plurality of attenuating and transparent elements of a predetermined configuration, the elements positioned such that the emitted radiation is detected by the position sensitive detector after passage through the mask.
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Abstract
A coded aperture includes a position sensitive detector configured to observe the location of emitted high energy radiation, and a mask disposed in front of the position sensitive detector, wherein the mask has a non-linear shape configured to define a perimeter around position sensitive detector, wherein the mask comprises a plurality of attenuating and transparent elements of a predetermined configuration, positioned such that the emitted radiation is detected by the position sensitive detector after passage through the mask.
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Citations
20 Claims
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1. A coded aperture detector, comprising:
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a position sensitive detector configured to observe the location of emitted radiation; and a mask disposed in front of the position sensitive detector, the mask comprising; a non-linear shape configured to define a perimeter around the position sensitive detector; a width less than or about equal to a width of the position sensitive detector; and a plurality of attenuating and transparent elements of a predetermined configuration, the elements positioned such that the emitted radiation is detected by the position sensitive detector after passage through the mask. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A coded aperture detector, comprising:
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a position sensitive detector configured to observe the location of a radiation source; and a mask comprising a plurality of attenuating and transparent elements disposed in front of the position sensitive detector, wherein the mask has a non-linear shape configured to define a perimeter around the position sensitive detector, wherein the mask comprises a width less than or about equal to a width of the position sensitive detector, and wherein at least a portion of the mask is spaced less than about 10 centimeters from the position sensitive detector to form the perimeter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of detecting a radiation source comprising:
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loading a stand-off radiation imaging and detection system aboard a vehicle, wherein the system is configured to detect the radiation source and comprises a mask disposed in front of a position sensitive detector, wherein the mask has a non-linear shape configured to define a perimeter around the position sensitive detector, wherein the mask comprises a width less than or about equal to a width of the position sensitive detector, wherein the mask comprises a plurality of attenuating and transparent elements of a predetermined configuration, positioned such that the emitted radiation is detected by the position sensitive detector after passage through the mask, and wherein the detector has a field of view of greater than 2 radians; recording detection of gamma radiation by the system; and determining the location of the radiation source. - View Dependent Claims (20)
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Specification