Patent US1967303A successfully refreshed from Google Patents.
US3790799A
Expired / Lapsed
US
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Radiant energy imaging with rocking scanning
Assignee: UNITED STATES TRUST Co
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Filing: 1972-06-21
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Granted: 1974-02-05
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Expires: 1992-06-21
Abstract
Abstract A pencil beam of X-rays scans an object along a line of direction along a line X-ray detector to produce an image of the line along a picture tube. The object scanned and the line of scan are relatively displaced by rocking the X-ray source and line detector about an axis substantially passing through a slit which collimates the X-ray energy into a fan beam intercepted by a rotating disc with radial slits that provides the scanning pencil beam. The X-ray detector preferably comprises sodium iodide elements imbedded in a light pipe with a photocell at each end of the light pipe.
Inventors
- 👤 J Stein
- 👤 G Polucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/083; G01N23/04; G01V; G01V5/00; G01V5/20; G01V5/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
156 words
Radiant energy imaging apparatus comprising, a source of radiant energy, radiant energy detecting means for providing a signal representative of radiant energy upon a curve defined thereby, means for supporting said source and said detecting means in fixed relative relationship for pivotal movement about an axis included in an aperture plane thErebetween, means defining an aperture in said aperture plane for movement along a predetermined path embracing said axis for scanning said curve with a beam of radiant energy from said source, and means for angularly displacing said means for supporting about said axis over a predetermined angle for coacting with the aperture defining means for two-dimensionally scanning an object between said aperture plane and said detecting means to produce a sequence of image signals representative of the radiant energy response of the medium in a region traversed by said beam of radiant energy along a path from said source to said radiant energy detecting means.
Claim 2
Dependent Claim
156 words
Radiant energy imaging apparatus comprising, a source of radiant energy, radiant energy detecting means for providing a signal representative of radiant energy upon a curve defined thereby, means for supporting said source and said detecting means in fixed relative relationship for pivotal movement about an axis included in an aperture plane thErebetween, means defining an aperture in said aperture plane for movement along a predetermined path embracing said axis for scanning said curve with a beam of radiant energy from said source, and means for angularly displacing said means for supporting about said axis over a predetermined angle for coacting with the aperture defining means for two-dimensionally scanning an object between said aperture plane and said detecting means to produce a sequence of image signals representative of the radiant energy response of the medium in a region traversed by said beam of radiant energy along a path from said source to said radiant energy detecting means.
Claim 3
Dependent Claim
46 words
Radiant energy imaging apparatus in accordance with claim 1 wherein said means defining an aperture is formed with at least one pair of beveled edges included in parallel planes separated by a distance corresponding to the thickness of a radiant energy beam emitted through said aperture.
Claim 4
Dependent Claim
45 words
Radiant energy imaging apparatus in accordance with claim 2 wherein there are two pairs of said beveled edges with one edge in each pair being at the input of said aperture and the other edge of each pair being at the output of said aperture.
Claim 5
Dependent Claim
93 words
Radiant energy imaging apparatus in accordance with claim 1 wherein said means for supporting comprises an arm pivotable about said axis carrying said detecting means at one end and said source at the other end and said means defining an aperture comprises, means defining a stationary slit for transmitting radiant energy therethrough and a rotatable disc formed with radial slits therein adjacent to said stationary slit so that rotation of said disc causes said radial slits to sequentially scan from one end of said stationary slit to the other for scanning said curve.
Claim 6
Dependent Claim
47 words
Radiant energy imaging apparatus in accordance with claim 4 and further comprising a television system responsive to the signal provided by said detecting means for displaying an image representative of the response of an object between said detecting means and said aperture plane to said radiant energy.
Claim 7
Dependent Claim
44 words
Radiant energy imaging apparatus in accordance with claim 1 wherein said radiant energy detecting means comprises, a light pipe with radiant energy-to-light transducing crystals imbedded therein, and photoelectric transducing means responsive to the light emitted by said transducing crystals for providing a video signal.
Claim 8
Dependent Claim
23 words
Detecting means in accordance with claim 6 wherein said photoelectric transducing means is located at at least one end of said light pipe.
Claim 9
Dependent Claim
21 words
Detecting means in accordance with claim 7 wherein said photoelectric transducing means is located at both ends of said light pipe.
Claim 10
Dependent Claim
30 words
Detecting means in accordance with claim 6 wherein said light pipe is circularly cylindrical and formed with a longitudinal slit along the length thereof in which said crystals are imbedded.
Claim 11
Dependent Claim
28 words
Detecting means in accordance with claim 9 wherein said light pipe is formed with opposed end faces and said photoelectric transducing means comprises photocells adjacent each end face.
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |