Patent US5059800A successfully refreshed from Google Patents.
US5059800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two dimensional mosaic scintillation detector
Assignee: General Electric Co
•
Filing: 1991-04-19
•
Granted: 1991-10-22
•
Expires: 2011-04-19
Abstract
Abstract A two dimensional mosaic scintillation X-ray or Gamma ray detector has many mosaic elements. A reflecting means, e.g., an epoxy with TiO 2 , is disposed between the elements to reduce optical cross-talk. The elements have wide narrow ends and either the wide ends or the narrow ends can receive the incident X-rays. A photodetector is optically coupled to the remaining ends either by being directly secured thereto or by way of a lens or optical fibers. The detector has communicating wide and narrow grooves and can be made by first forming the wide grooves from a first side and then forming the narrow grooves from the second side.
Inventors
- 👤 Michael K. Cueman
- 👤 Gregory A. Mohr
- 👤 Dale M. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:27
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/202; G01T1/2018; G01T1/20183; G01T1/20185; G01T1/20187; G01T1/20188; G01T1/2019
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
110 words
A detector for a first type of radiation, said detector comprising: a plurality of radiation receiving means, disposed in a mosaic, for emitting a second type of radiation in response to incident radiation of the first type, each of said receiving means having wide and narrow ends defining communicating grooves between adjacent receiving means, said wide ends being adapted to receive the incident radiation of the first type; means for reflecting said second radiation type filling each groove between each of said plurality of receiving means; and means for providing a signal in response to radiation of said second type, said providing means being optically coupled to said narrow ends.
Claim 2
Dependent Claim
110 words
A detector for a first type of radiation, said detector comprising: a plurality of radiation receiving means, disposed in a mosaic, for emitting a second type of radiation in response to incident radiation of the first type, each of said receiving means having wide and narrow ends defining communicating grooves between adjacent receiving means, said wide ends being adapted to receive the incident radiation of the first type; means for reflecting said second radiation type filling each groove between each of said plurality of receiving means; and means for providing a signal in response to radiation of said second type, said providing means being optically coupled to said narrow ends.
Claim 3
Dependent Claim
22 words
The detector of claim 1 wherein said first type of radiation comprises X-ray and said second type of radiation comprises visible light.
Claim 4
Dependent Claim
17 words
The detector of claim 1 wherein said radiation receiving means comprises a sintered rare earth ceramic oxide.
Claim 5
Dependent Claim
13 words
The detector of claim 3 wherein said oxide comprises a Y:Gd X-ray absorber.
Claim 6
Dependent Claim
41 words
The detector of claim 4 wherein said absorber comprises between about 20 to 50 mole percent Gd 2 O 3 , between about one to six mole percent Eu 2 O 3 , with the remainder Y 2 O 3 .
Claim 7
Dependent Claim
37 words
The detector of claim 5 wherein said absorber comprises about 30 mole percent Gd 2 O 3 , about three mole percent Eu 2 O 3 , and about 67 mole percent Y 2 O 3 .
Claim 8
Dependent Claim
19 words
The detector of claim 6 wherein said absorber further comprises about 0.02 mole percent Pr 2 O 3 .
Claim 9
Dependent Claim
15 words
The detector of claim 1 wherein said radiation receiving means comprises a compound of bismuth.
Claim 10
Dependent Claim
12 words
The detector of claim 8 wherein said compound comprises BGO (bismuth germanate).
Claim 11
Dependent Claim
13 words
The detector of claim 1 wherein said reflecting means comprises TiO 2 .
Claim 12
Dependent Claim
14 words
The detector of claim 1 wherein said providing means directly contacts said narrow ends.
Claim 13
Dependent Claim
21 words
The detector of claim 1 further comprising lens means for providing optical coupling between said providing means and said narrow ends.
Claim 14
Dependent Claim
49 words
The detector of claim 1 further comprising an enclosure having an opening, said plurality of radiation receiving means being disposed outside of said enclosure proximate said opening, said providing means being inside of said enclosure, and means for shielding said providing means disposed outside of and on said enclosure.
Claim 15
Dependent Claim
16 words
The detector of claim 1 wherein said reflecting means is also disposed on said wide ends.
Claim 16
Dependent Claim
83 words
A detector for a first type of radiation, said detector comprising: a plurality of means, disposed in a mosaic, for emitting a second type of radiation in response to incident radiation of the first type, each of said means having wide and narrow ends, said narrow ends being adapted to receive the incident radiation of the first type; and detector means for providing a signal in response to radiation of said second type, said detector means being optically coupled to said wide ends.
Claim 17
Dependent Claim
83 words
A detector for a first type of radiation, said detector comprising: a plurality of means, disposed in a mosaic, for emitting a second type of radiation in response to incident radiation of the first type, each of said means having wide and narrow ends, said narrow ends being adapted to receive the incident radiation of the first type; and detector means for providing a signal in response to radiation of said second type, said detector means being optically coupled to said wide ends.
Claim 18
Dependent Claim
20 words
The detector of claim 15 further comprising means for reflecting said second radiation type disposed between said plurality of means.
Claim 19
Dependent Claim
16 words
The detector of claim 16 wherein said reflecting means is also disposed on said narrow ends.
Claim 20
Dependent Claim
13 words
The detector of claim 16 wherein said reflecting means comprises TiO 2 .
Claim 21
Dependent Claim
16 words
The detector of claim 15 wherein said emitting means comprises a sintered rare earth ceramic oxide.
Claim 22
Independent Claim
65 words
A method of making a scintillation detector, said method comprising: first scoring a plurality of wide grooves on a first side of a slab of scintillation material; and then scoring a plurality of narrow grooves on a second side of said slab respectively communicating with said plurality of wide grooves thereby providing a plurality of structurally independent, radiation receiving means having wide and narrow ends.
Claim 23
Independent Claim
65 words
A method of making a scintillation detector, said method comprising: first scoring a plurality of wide grooves on a first side of a slab of scintillation material; and then scoring a plurality of narrow grooves on a second side of said slab respectively communicating with said plurality of wide grooves thereby providing a plurality of structurally independent, radiation receiving means having wide and narrow ends.
References Cited (Backward Citations)
GB1525463A
Cited
JPS57104873A
Cited
JPS58153190A
Cited
JPS58216973A
Cited
US4560877A
Cited
US4533489A
Cited
US4560882A
Cited
US4855589A
Cited
US4730108A
Cited
US4906850A
Cited
US4755681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |