US4461017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent X-ray device
Assignee: Seiko Instruments Inc
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Filing: 1982-01-27
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Granted: 1984-07-17
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Expires: 2002-01-27
Abstract
Abstract A flourescent x-ray device for irradiating x-rays to a sample so that flourescent x-rays emitted from the sample can be detected is described. A stationary fixed collecting plate is used instead of the movable reflecting plate employed in the prior art. The reflecting plate possesses the characteristics of being transmissive to x-rays and being reflective to visible light so that an image of the sample can be viewed by an observer and the sample can be irradiated with x-rays passing through the plate. The invention permits a remarkable decrease in manufacturing cost. Moreover, the device can be operated in a stable condition with high accuracy for a long time.
Inventors
- 👤 Toshiyuki Koga
- 👤 Hiroshi Ishijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:13
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
In a fluorescent X-ray device for irradiating a sample with X-rays: an X-ray tube for emitting X-rays; collimating means for collimating the X-rays into an X-ray beam and directing the X-ray beam along an X-ray path to a sample; reflecting means stationarily disposed along the X-ray path downstream of the collimating means and composed of a material which effectively transmits therethrough the X-ray beam to enable the sample to be irradiated with X-rays and which effectively reflects visible light reflected by the sample to enable an image of the sample to be viewed by an observer; and detecting means for detecting fluorescent X-rays emitted from the sample.
Claim 2
Dependent Claim
107 words
In a fluorescent X-ray device for irradiating a sample with X-rays: an X-ray tube for emitting X-rays; collimating means for collimating the X-rays into an X-ray beam and directing the X-ray beam along an X-ray path to a sample; reflecting means stationarily disposed along the X-ray path downstream of the collimating means and composed of a material which effectively transmits therethrough the X-ray beam to enable the sample to be irradiated with X-rays and which effectively reflects visible light reflected by the sample to enable an image of the sample to be viewed by an observer; and detecting means for detecting fluorescent X-rays emitted from the sample.
Claim 3
Dependent Claim
26 words
A device according to claim 1; wherein the reflecting means comprises a plate member fixedly mounted at a predetermined angle with respect to the X-ray path.
Claim 4
Dependent Claim
14 words
A device according to claim 2; wherein the plate member comprises SiO 2 .
Claim 5
Dependent Claim
17 words
A device according to claim 2; wherein the plate member comprises an organic film plated with aluminum.
Claim 6
Dependent Claim
49 words
A device according to claim 1; wherein the reflecting means comprises a plate member fixedly mounted at a predetermined angle with respect to the X-ray path to reflect the image of the sample incident thereon from along the X-ray path to a remote point for viewing by an observer.
Claim 7
Dependent Claim
14 words
A device according to claim 5; wherein the plate member comprises SiO 2 .
Claim 8
Dependent Claim
17 words
A device according to claim 5; wherein the plate member comprises an organic film plated with aluminum.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |