US4181856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangements for detectors of radiation
Assignee: QED Intellectual Property Ltd
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Filing: 1978-02-27
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Granted: 1980-01-01
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Expires: 1998-02-27
Abstract
Abstract An ionizing radiation detector arrangement includes scintillator crystals and respective photodiodes of elongate form and mountings to assemble these in sub-arrays of, for example, four, units. The mountings are shaped to permit assembly around a ring with radially extending cards bearing circuit components. Assembly is made accurately by including skewed lugs in the mountings.
Inventors
- 👤 Phillip R. Bone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:31
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2018; G01T1/20185; A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; G01T1/20182; G01T1/20188; G01T1/20189
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
An arrangement for detecting ionising radiation including a plurality of scintillator crystals, a plurality of photo-diodes, the crystals being secured to, and in direct optical communication with, respective ones of said photo-diodes, to form a plurality of detectors adapted to produce electrical output signals in response to ionising radiation incident on said crystals, a plurality of detector holders each constructed to receive a respective pair of said detectors and to support said detectors in side-by-side relationship with adjacent edges of the respective crystals in contact, a locating block constructed to receive said holders and to locate the respective detectors supported by said holders with the crystals of all adjacent detectors in contact, presenting a substantially uninterrupted receiving surface to said ionising radiation, said locating block being formed with projecting lugs for location of the complete assembly in relation to other similar assemblies.
Claim 2
Dependent Claim
142 words
An arrangement for detecting ionising radiation including a plurality of scintillator crystals, a plurality of photo-diodes, the crystals being secured to, and in direct optical communication with, respective ones of said photo-diodes, to form a plurality of detectors adapted to produce electrical output signals in response to ionising radiation incident on said crystals, a plurality of detector holders each constructed to receive a respective pair of said detectors and to support said detectors in side-by-side relationship with adjacent edges of the respective crystals in contact, a locating block constructed to receive said holders and to locate the respective detectors supported by said holders with the crystals of all adjacent detectors in contact, presenting a substantially uninterrupted receiving surface to said ionising radiation, said locating block being formed with projecting lugs for location of the complete assembly in relation to other similar assemblies.
References Cited (Backward Citations)
US3944833A
Cited
US4070581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |