US 12,442,779 B2
Systems and methods for inspection portals
Joseph Bendahan, San Jose, CA (US)
Assigned to Smiths Detection, Inc., Edgewood, MD (US)
Appl. No. 18/004,473
Filed by Smiths Detection Inc., Edgewood, MD (US)
PCT Filed Jul. 1, 2021, PCT No. PCT/US2021/040119
§ 371(c)(1), (2) Date Jan. 6, 2023,
PCT Pub. No. WO2022/010738, PCT Pub. Date Jan. 13, 2022.
Claims priority of provisional application 63/048,317, filed on Jul. 6, 2020.
Prior Publication US 2023/0251209 A1, Aug. 10, 2023
Int. Cl. G01N 23/04 (2018.01); G01N 23/083 (2018.01); G01N 23/203 (2006.01); G01N 33/22 (2006.01); G01V 5/222 (2024.01)
CPC G01N 23/04 (2013.01) [G01N 23/083 (2013.01); G01N 23/203 (2013.01); G01N 33/227 (2013.01); G01V 5/222 (2024.01); G01N 2223/045 (2013.01); G01N 2223/053 (2013.01); G01N 2223/314 (2013.01); G01N 2223/50 (2013.01); G01N 2223/643 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An inspection portal for imaging an object, said inspection portal comprising:
a first x-ray source configured to emit a first beam towards the object;
a first backscatter detector configured to detect backscatter from the first beam;
a second x-ray source configured to emit a second beam towards the object;
a second backscatter detector configured to detect backscatter from the second beam; and
at least one first collimator coupled to said first backscatter detector and at least one second collimator coupled to said second backscatter detector, said at least one first collimator oriented to detect backscatter from the first beam and to block scatter from the second beam, and said at least one second collimator oriented to detect backscatter from the second beam and to block scatter from the first beam, wherein said first backscatter detector is further configured to use signal processing techniques to mitigate crosstalk due to scatter radiation from the second beam, and wherein said second backscatter detector is further configured to use the signal processing techniques to mitigate crosstalk due to scatter radiation from the first beam.