US3774032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attenuated light coupling between scintillator and photomultiplier
Assignee: NUCLEAR DATA Ltd
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Filing: 1971-10-22
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Granted: 1973-11-20
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Expires: 1991-10-22
Abstract
Abstract A radiation image device having a scintillator, a plurality of photomultiplier tubes positioned to receive light from the scintillator and a light conductor between the scintillator and the photomultiplier tubes. Dimming means are positioned between the scintillator and photomultiplier tubes.
Inventors
- 👤 K Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/1642
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
63 words
In a radiation image device having a scintillator, means for emitting electrons in response to light from said scintillator, and light conductive means beteen the scintillator and electron emitting means, the improvement comprising means on either the light conductive means or the electron emitting means and between the scintillator and the electron emitting means for selectively attenuating the light emitted by said scintillator.
Claim 2
Dependent Claim
63 words
In a radiation image device having a scintillator, means for emitting electrons in response to light from said scintillator, and light conductive means beteen the scintillator and electron emitting means, the improvement comprising means on either the light conductive means or the electron emitting means and between the scintillator and the electron emitting means for selectively attenuating the light emitted by said scintillator.
Claim 3
Dependent Claim
61 words
In a radiation image device having a scintillator, a plurality of photomultiplier tubes positioned to receive light from the scintillator, and light conductive means between the scintillator and the photomultiplier tubes, the improvement comprising means on either the light conductive means or the photomultiplier tube for selectively attenuating the light emitted by the scintillator which is received by the photomultiplier tubes.
Claim 4
Dependent Claim
61 words
In a radiation image device having a scintillator, a plurality of photomultiplier tubes positioned to receive light from the scintillator, and light conductive means between the scintillator and the photomultiplier tubes, the improvement comprising means on either the light conductive means or the photomultiplier tube for selectively attenuating the light emitted by the scintillator which is received by the photomultiplier tubes.
Claim 5
Dependent Claim
35 words
The structure of claim 2 further characterized in that the means for attenuating the light received by the photomultiplier tubes includes a plurality of opaque areas positioned on a surface of the light conductive means.
Claim 6
Dependent Claim
26 words
The structure of claim 3 further characterized in that said opaque areas are positioned on that surface of the light conductive means nearest the photomultiplier tubes.
Claim 7
Dependent Claim
20 words
The structure of claim 3 further characterized in that said opaque areas are each in alignment with a photomultiplier tube.
Claim 8
Dependent Claim
24 words
The structure of claim 5 further characterized in that there is at least one opaque area in general axial alignment with each photomultiplier tube.
Claim 9
Dependent Claim
22 words
The structure of claim 6 further characterized in that each opaque area is located generally in the center of each photomultiplier tube.
Claim 10
Dependent Claim
22 words
The structure of claim 7 further characterized in that each of said opaque areas are generally the same in size and configuration.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |