US4447305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining luminescent glass layers
Assignee: Centre National de la Recherche Scientifique
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Filing: 1982-04-12
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Granted: 1984-05-08
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Expires: 2002-04-12
Abstract
Abstract Process for obtaining luminescent glass layers, application to the production of devices provided with said layers and to the construction of photoscintillators. The process comprises projecting onto a support, by cathodic sputtering, the material of at least one target, each target including silica and at least one chemical compound able to give luminescent centers, such as a cerium oxide, so as to form at least one luminescent glass layer of the said support. The layer or layers formed preferably undergo a heat treatment such as annealing in order to increase the luminous efficiency thereof. It is in this way possible to form a scintillating glass layer on the previously frosted entrance window of a photomultiplier in order to obtain an integrated photoscintillator.
Inventors
- 👤 Rudolf Heindl
- 👤 Andre Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/12; C03C17/00; C03C17/02; C23; C23C; C23C14/00; C23C14/06; C23C14/10; G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/202; G01T1/2023; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
Process for producing a photoscintillator, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said support being transparent to said light and having a polished face and a frosted face, said scintillating glass layer being deposited on the frosted face and optically coupled to the entrance window of a photodetector by means of the polished face.
Claim 2
Dependent Claim
94 words
Process for producing a photoscintillator, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said support being transparent to said light and having a polished face and a frosted face, said scintillating glass layer being deposited on the frosted face and optically coupled to the entrance window of a photodetector by means of the polished face.
Claim 3
Dependent Claim
77 words
Process for producing a photoscintillator, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said scintillating glass layer being optically coupled to a photodetector provided with an entrance window and the surface of the scintillating glass layer being metallized.
Claim 4
Dependent Claim
77 words
Process for producing a photoscintillator, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said scintillating glass layer being optically coupled to a photodetector provided with an entrance window and the surface of the scintillating glass layer being metallized.
Claim 5
Dependent Claim
18 words
A process according to claim 2, wherein said support is a previously frosted entrance window of a photodetector.
Claim 6
Dependent Claim
34 words
A process according to claim 2, wherein the support is transparent to the light which the scintillating glass layer is able to emit and is optically coupled to the entrance window of the photodetector.
Claim 7
Dependent Claim
94 words
A process for producing a photoscintillator intended for the study of α-particles, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said scintillating glass layer having the thickness of approximately the path in said scintillating glass corresponding to the emission energy of the α-particles and being optically coupled to a photodetector provided with an entrance window.
Claim 8
Dependent Claim
94 words
A process for producing a photoscintillator intended for the study of α-particles, comprising projecting onto a support, by cathodic sputtering, the material of a target containing silica and at least one chemical compound able to give luminescent centers, in such a way as to form on said support a scintillating glass layer able to emit light by energy absorption, said scintillating glass layer having the thickness of approximately the path in said scintillating glass corresponding to the emission energy of the α-particles and being optically coupled to a photodetector provided with an entrance window.
Claim 9
Dependent Claim
18 words
A process according to claim 5, wherein said support is a previously frosted entrance window of a photodetector.
Claim 10
Dependent Claim
34 words
A process according to claim 5, wherein the support is transparent to the light which the scintillating glass layer is able to emit and is optically coupled to the entrance window of the photodetector.
Claim 11
Dependent Claim
44 words
A process according to claim 7, wherein the support has a polished face and a frosted face, the scintillating glass layer is deposited on the frosted face and is optically coupled to the entrance window of the photodetector by means of the polished face.
Claim 12
Dependent Claim
16 words
A process according to claim 5, wherein the surface of the scintillating glass layer is metallized.
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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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |