X-ray or gamma ray systems or devices – Specific application – Absorption
Reexamination Certificate
2005-12-06
2005-12-06
Church, Craig E. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Absorption
C378S005000, C378S053000
Reexamination Certificate
active
06973161
ABSTRACT:
A conveying section conveys an inspected object so as to cross the X-rays irradiated from an X-ray generating section. A first sensor module is disposed along a transmitting direction of the X-rays transmitted through the inspected object, and receives one portion of the X-rays transmitted through the inspected object, and outputs a first electric signal corresponding to a first X-ray energy amount. A second sensor module receives a remaining portion of the X-rays transmitted through the inspected object, and outputs a second electric signal corresponding to a second X-ray energy amount different from the first X-ray energy amount. Presence/absence of a foreign material mixed in the inspected object can be detected based on the first and second electric signals, which are output from the first and second sensor modules to the same inspected object at substantially the same detection time.
REFERENCES:
patent: 5040199 (1991-08-01), Stein
patent: 5490218 (1996-02-01), Krug et al.
patent: 1-026132 (1989-01-01), None
patent: 10-318943 (1998-12-01), None
patent: 11-231056 (1999-08-01), None
patent: 2001-133554 (2001-05-01), None
Anritsu Industrial Solutions Co., Ltd.
Church Craig E.
Frishauf Holtz Goodman & Chick P.C.
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