US3798448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scintillation meter-type spectrometer
Assignee: Saint Gobain Ceramics and Plastics Inc
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Filing: 1972-05-11
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Granted: 1974-03-19
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Expires: 1992-05-11
Abstract
Abstract An improved scintillation meter component for a radiation detector having a photomultiplier tube optically coupled to a solid scintillation crystal. The crystal is coated with an optical decoupling agent to balance the light output sensed by the photocathode.
Inventors
- 👤 J Menefee
- 👤 W Novak
- 👤 J White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:19
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/202
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
63 words
A device as recited in claim 1 further including a second coating of optical-reflection-reducing material with a refractive index greater than 1 and less than 1.5 applied to another surface portion of said crystal, said other portion comprising a cylindrical band extending from said first-named band across a uniform axial width equal to less than one half the axial length oF said crystal.
Claim 2
Dependent Claim
15 words
A device as recited in claim 1 wherein said optical-reflection-reducing material comprises an epoxy resin.
Claim 3
Dependent Claim
96 words
A device as recited in claim 1 wherein said crystal has a circular opening extending transversely therethrough with an axis perpendicular to the crystal axis, for receiving a source of particle emission, and further including a coating of said optical-reflection-reducing material applied to an interior surface portion of said opening, said portion comprising an axial zone extending the length of said opening and across a uniform width equal to less than a 180* circumferential arc of said bore, said arc being located between said inner end face of said crystal and the axis of said bore.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |