Patent US2223906A successfully refreshed from Google Patents.
US4267453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detection device having reflective cover layers of BaSO4 incorporated in acrylic varnish
Assignee: US Philips Corp
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Filing: 1979-03-08
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Granted: 1981-05-12
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Expires: 1999-03-08
Abstract
Abstract In order to reduce the loss of scintillation radiation which laterally emerges in radiation detector devices comprising a scintillation element, the appropriate surfaces of the scintillation element and any subsequent light conductors are provided with a suitably reflective and properly adhesive cover layer. Using a diluted acrylic varnish which incorporates BaSO 4 , a cover layer having favorable adhesive properties can be obtained, the occurrence of loose paint particles in the device also being prevented.
Inventors
- 👤 Arnoldus M. C. Kieboom
- 👤 Nicolaas P. Dedding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:03
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/2002
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
55 words
A radiation detection device comprising scintillation means for providing scintillation radiation in a wavelength range between shortwave visible radiation and ultraviolet radiation, means for recording said scintillation radiation, and means for propagating said scintillation radiation having surface areas provided with a cover layer of BaSO 4 incorporated in acrylic varnish for reflecting said scintillation radiation.
Claim 2
Dependent Claim
55 words
A radiation detection device comprising scintillation means for providing scintillation radiation in a wavelength range between shortwave visible radiation and ultraviolet radiation, means for recording said scintillation radiation, and means for propagating said scintillation radiation having surface areas provided with a cover layer of BaSO 4 incorporated in acrylic varnish for reflecting said scintillation radiation.
Claim 3
Dependent Claim
35 words
A radiation detection device according to claim 1, wherein said scintillation means comprise at least one scintillation crystal having surface areas which do not face said recording means being provided with said reflective cover layer.
Claim 4
Dependent Claim
43 words
A radiation detection device according to claim 2, wherein a single scintillation crystal is provided with an adjoining light conductor, said single scintillation crystal and light conductor having surface areas free of scintillation radiation passage which are provided with said reflective cover layer.
Claim 5
Dependent Claim
42 words
A radiation detection device according to claim 3, wherein said recording means include a matrix of detectors adjoining said light conductor for passage of said scintillation radiation, said light conductor having surface areas between said detectors provided with said reflective cover layer.
Claim 6
Dependent Claim
21 words
A radiation detection device according to claim 1 or 2, wherein an X-ray source is provided for activating said scintillation means.
Claim 7
Dependent Claim
28 words
A radiation detection device according to claim 5, wherein said scintillation means comprise an array of individual scintillation elements having adjoining surfaces provided with said reflective cover layer.
Claim 8
Dependent Claim
21 words
A radiation detection device according to claim 1, wherein said cover layer comprises BaSO 4 incorporated into a diluted acrylic varnish.
Claim 9
Dependent Claim
23 words
A radiation detection device according to claim 7, wherein said diluted acrylic varnish has a diluent containing special boiling point spirit and xylene.
Claim 10
Dependent Claim
19 words
A radiation detection device according to claim 7, wherein said diluted acrylic varnish has a diluent containing butyl lactate.
Claim 11
Dependent Claim
20 words
A radiation reflective material for use in a radiation detection device comprising BaSO 4 incorporated in a diluted acrylic varnish.
Claim 12
Dependent Claim
20 words
A radiation reflective material for use in a radiation detection device comprising BaSO 4 incorporated in a diluted acrylic varnish.
Claim 13
Dependent Claim
23 words
A radiation reflective material according to claim 10, wherein said diluted acrylic varnish has a diluent containing special boiling point spirit and xylene.
Claim 14
Dependent Claim
19 words
A radiation reflective material according to claim 10, wherein said diluted acrylic varnish has a diluent containing butyl lactate.
References Cited (Backward Citations)
US3011057A
Cited
US4107534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |