EP0139375A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A high density detector array
Assignee: Toshiba Corp
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Filing: 1984-08-10
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Granted: —
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Expires: 2004-08-10
Abstract
Abstract A high density x-ray detector array comprising a large number of photocells produced on a single substrate with the array consisting of a large number of standard size photocells and selective repetitive placing of pairs of smaller width photocells between which the substrate may be interrupted to replace sections thereof should any of the photocells within those sections prove inoperative.
Inventors
- 👤 Nand Kishore Gupta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 21:17
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2006; G01T1/161; G01T1/164; G01T1/1641; G01T1/1644
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A high density x-ray detector array comprising: a. a plurality of groups of first photocells, said first photocell mounted side-by-side on a substrate, said first photocells being of equal width W and being spaced form one another by a separation distance L to maximise the density of said first photocells, said distance L being insuffucient to permit interruption of said substrate between said first photocells without damage to said first photocells; and b. a pair of side-by-side second photocells with each of said second photocells having a width less than W, with said pair located between two of said groups of first photocells, each of said second photocells being separated from an adjacent first photocell by said distance L, the centres of said first photocells on opposite sides of said pair of second photocells being separated by a distance equal to three times the sum of L plus W, and with said second photocells separated from each other by a distance sufficiently greater than L to permit selective interruption of said substrate between said second photocells without damage to said second photocells.
Claim 2
Dependent Claim
182 words
A high density x-ray detector array comprising: a. a plurality of groups of first photocells, said first photocell mounted side-by-side on a substrate, said first photocells being of equal width W and being spaced form one another by a separation distance L to maximise the density of said first photocells, said distance L being insuffucient to permit interruption of said substrate between said first photocells without damage to said first photocells; and b. a pair of side-by-side second photocells with each of said second photocells having a width less than W, with said pair located between two of said groups of first photocells, each of said second photocells being separated from an adjacent first photocell by said distance L, the centres of said first photocells on opposite sides of said pair of second photocells being separated by a distance equal to three times the sum of L plus W, and with said second photocells separated from each other by a distance sufficiently greater than L to permit selective interruption of said substrate between said second photocells without damage to said second photocells.
Claim 3
Dependent Claim
25 words
The array of claim 1 further including a plurality of equal width scintillators, each aligned with a respective one of said first and second photocells.
Claim 4
Dependent Claim
22 words
The array of claim 1 wherein a pair of second photocells is provided at regular intervals between groups of said first photocells.
Claim 5
Dependent Claim
183 words
A high density x-ray detector array comprising: a. a plurality of units, each unit including a plurality of first photocells mounted side-by-side on a substrate, said first photocells being of equal width W and being spaced from one another by a distance L to maximise the density of said first photocells, said distance L being insufficient to interrupt said substrate between said first photocells without damage to said first photocells; and b. two second photocells each having a width less than W, one of said second photocells located at each end of said plurality of first photocells, with each second photocell separated from an adjacent first photocell by said distance L, the centre of each of said adjacent first photocells separated from a respective edge of said unit by a distance equal to one and one-half times the sum of L plus W, and with said second photocells each separated. from said respective edges of said unit by a distance sufficiently greater than one-half L to permit interruption of said substrate at said edges of said units without damage to said second photocells.
Claim 6
Dependent Claim
183 words
A high density x-ray detector array comprising: a. a plurality of units, each unit including a plurality of first photocells mounted side-by-side on a substrate, said first photocells being of equal width W and being spaced from one another by a distance L to maximise the density of said first photocells, said distance L being insufficient to interrupt said substrate between said first photocells without damage to said first photocells; and b. two second photocells each having a width less than W, one of said second photocells located at each end of said plurality of first photocells, with each second photocell separated from an adjacent first photocell by said distance L, the centre of each of said adjacent first photocells separated from a respective edge of said unit by a distance equal to one and one-half times the sum of L plus W, and with said second photocells each separated. from said respective edges of said unit by a distance sufficiently greater than one-half L to permit interruption of said substrate at said edges of said units without damage to said second photocells.
Claim 7
Dependent Claim
25 words
The array of claim 4 further including a plurality of equal width scintillators each aligned with a respective one of said first and second photocells.
References Cited (Backward Citations)
US4181856A
Cited
GB2005953A
Cited
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