Patent US5391879A successfully refreshed from Google Patents.
US5391879A
Expired / Lapsed
US
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Radiation detector
Assignee: 3M Co
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Filing: 1993-11-19
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Granted: 1995-02-21
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Expires: 2013-11-19
Abstract
Abstract A radiation detector containing: (a) a fiber optic network; (b) an array of pixelized phosphors on the X-ray incidence side of the fiber optic network; and (c) an array of pixelized sensors optically coupled to the other side of the fiber optic network, wherein: (i) the ratio of the surface area of a phosphor pixel to the surface area of a sensor pixel is in the range of about 1:1 to 1:64, and (ii) the ratio of the surface area of the core of each individual optical fiber of the fiber optic network to the surface area of a phosphor pixel is in the range of about 1:4 to 1:160.
Inventors
- 👤 Nang T. Tran
- 👤 Luciano W. Morrone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:26
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2018; G01T1/20187; G01T1/20185
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
An X-ray radiation detector comprising: (a) a fiber optic network having an X-ray incident side and an other side; (b) an array of pixelized phosphors on the X-ray incidence side of said fiber optic network; and (c) an array of pixelized sensors optically coupled to the other side of said fiber optic network, wherein: (i) the ratio of the surface area of a phosphor pixel to the surface area of a sensor pixel is in the range of about 1:2.19 1:4, and (ii) the ratio of the surface area of the core of each individual optical fiber of said fiber optic network to the surface area of a phosphor pixel is in the range of about 1:4 to 1:160.
Claim 2
Dependent Claim
119 words
An X-ray radiation detector comprising: (a) a fiber optic network having an X-ray incident side and an other side; (b) an array of pixelized phosphors on the X-ray incidence side of said fiber optic network; and (c) an array of pixelized sensors optically coupled to the other side of said fiber optic network, wherein: (i) the ratio of the surface area of a phosphor pixel to the surface area of a sensor pixel is in the range of about 1:2.19 1:4, and (ii) the ratio of the surface area of the core of each individual optical fiber of said fiber optic network to the surface area of a phosphor pixel is in the range of about 1:4 to 1:160.
Claim 3
Dependent Claim
20 words
The radiation detector of claim 1 wherein said ratio in (ii) is in the range of about 1:4 to 1:64.
Claim 4
Dependent Claim
20 words
The radiation detector of claim 2 wherein said ratio in (ii) is in the range of about 1:16 to 1:30.
Claim 5
Dependent Claim
16 words
The radiation detector of claim 1 wherein said fiber optic network comprises a fiber optic faceplate.
Claim 6
Dependent Claim
24 words
The radiation detector according to claim 4 wherein a microlens array is positioned between said fiber optic faceplate and said array of pixelized phosphors.
Claim 7
Dependent Claim
28 words
The radiation detector of claim 4 wherein at least a portion of the optical fibers of the fiber optic faceplate are inclined to the array of pixelized phosphors.
Claim 8
Dependent Claim
13 words
The radiation detector of claim 6 wherein said fiber optic faceplate is tapered.
Claim 9
Dependent Claim
18 words
The radiation detector of claim 1 wherein said array of pixelized sensors is based on single crystal silicon.
Claim 10
Dependent Claim
20 words
The radiation detector of claim 1 wherein said array of pixelized sensors are formed on back-illuminated thinned-out single crystal silicon.
Claim 11
Dependent Claim
21 words
The radiation detector according to claim 1 wherein said fiber optic network is adhesively attached to said array of pixelized sensors.
Claim 12
Dependent Claim
22 words
The radiation detector according to claim 1 wherein said pixelized phosphor is fabricated directly on the surface of said fiber optic network.
Claim 13
Dependent Claim
111 words
An X-ray radiation detector comprising: (a) a fiber optic network; (b) an array of pixelized phosphors on the X-ray incidence side of said fiber optic network; and (c) an array of pixelized sensors optically coupled to the other side of said fiber optic network, wherein: (i) the ratio of the surface area of a phosphor pixel to the surface area of a sensor pixel is in the range of about 1:2 to 1:64, and (ii) the ratio of the surface area of the core of each individual optical fiber of said fiber optic network to the surface area of a phosphor pixel is in the range of about 1:4 to 1:160.
Claim 14
Dependent Claim
111 words
An X-ray radiation detector comprising: (a) a fiber optic network; (b) an array of pixelized phosphors on the X-ray incidence side of said fiber optic network; and (c) an array of pixelized sensors optically coupled to the other side of said fiber optic network, wherein: (i) the ratio of the surface area of a phosphor pixel to the surface area of a sensor pixel is in the range of about 1:2 to 1:64, and (ii) the ratio of the surface area of the core of each individual optical fiber of said fiber optic network to the surface area of a phosphor pixel is in the range of about 1:4 to 1:160.
Claim 15
Dependent Claim
21 words
The radiation detector according to claim 12 wherein said ratio in (i) is in the range of about 1:2 to 1:16.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-20 | 1998-08-22 | 1999-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-20 | 2002-08-22 | 2003-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-20 | 2006-08-22 | 2007-02-21 | $7700.00 | Window Closed / Lapsed |