US4415810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for imaging penetrating radiation
Assignee: Individual
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Filing: 1979-07-05
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Granted: 1983-11-15
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Expires: 1999-07-05
Abstract
Abstract A device for imaging penetrating radiation which includes a multiplicity of contiguously disposed fiberoptic tubes each of which is made of a very small diameter with an inner core material composed of scintillating material for converting radiation to light and a cladding glass about the inner core to serve as a reflector and a third and outer layer which is light absorbing to absorb light that is being emitted at too great an angle to the optical fiber axis to be guided to an exit end of the device. Also, one end of each of the fibers has a thin layer of a corrision resistent metal or metal alloy to cause light reflected back toward this end to be directed in an opposite direction to the output end of the fiber and by this reflection cause the output to be considerably increased over that which would be lost if no reflecting means were placed at the end of each of the fibers.
Inventors
- 👤 Robert L. Brown, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:43
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B6/08; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/164; G01T1/1641; G01T1/20; G01T1/2002; G21; G21K; G21K4/00; H; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/892
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
226 words
A device for imaging penetrating radiation comprising fiber optic tube means including an inner core material composed of scintillating material capable of converting radiation to light rays; a cladding transparent material, about said inner core and reflecting light back into said inner core; an outer most radial light absorbing layer that has a highly colored material suspended therein which absorbs unwanted light that cannot be guided to an exit end of said inner core material; a multiplicity of said fiber optic tube means that are made of the same materials being contiguously disposed relative to each other and secured together to define a disk with an input end face on one side of said disk and an output end face on the other side of said disk; and said input end face being a polished surface and having attached thereto a thin, corrosion resistant, metallic, mirror coat, said mirror coat being attached such as by being deposited thereon chemically or by vacuum techniques to provide a thin mirror coat of a thickness that is from about 1 to about 20 millionths of an inch thick that is opaque to stray light outside said fiber optic tube means, and that is reflective to light quanta from scintillations within said fiber optic tube means and thereby improve light output capability of each of said fiber optic tube means.
Claim 2
Independent Claim
226 words
A device for imaging penetrating radiation comprising fiber optic tube means including an inner core material composed of scintillating material capable of converting radiation to light rays; a cladding transparent material, about said inner core and reflecting light back into said inner core; an outer most radial light absorbing layer that has a highly colored material suspended therein which absorbs unwanted light that cannot be guided to an exit end of said inner core material; a multiplicity of said fiber optic tube means that are made of the same materials being contiguously disposed relative to each other and secured together to define a disk with an input end face on one side of said disk and an output end face on the other side of said disk; and said input end face being a polished surface and having attached thereto a thin, corrosion resistant, metallic, mirror coat, said mirror coat being attached such as by being deposited thereon chemically or by vacuum techniques to provide a thin mirror coat of a thickness that is from about 1 to about 20 millionths of an inch thick that is opaque to stray light outside said fiber optic tube means, and that is reflective to light quanta from scintillations within said fiber optic tube means and thereby improve light output capability of each of said fiber optic tube means.
Claim 3
Dependent Claim
44 words
A device for imaging penetrating radiation as set forth in claim 1, wherein said cladding transparent material is selected from boron glass and lime glass and said highly colored material is a glass which has incorporated therein a suspension of colloidol metal or metals.
Claim 4
Dependent Claim
31 words
A device for imaging penetrating radiation as set forth in claim 2, wherein said colloidal metal or metals are selected from the group consisting of copper, gold, iron, manganese and cobalt.
Claim 5
Dependent Claim
21 words
A device for imaging penetrating radiation as set forth in claim 3, wherein said output end face is a polished surface.
Claim 6
Dependent Claim
30 words
A device for imaging penetrating radiation as set forth in claim 4, wherein said mirror coat is a metal selected from the group consisting of gold, silver, aluminum and chromium.
Claim 7
Dependent Claim
53 words
A device for imaging penetrating radiation as set forth in claim 5, wherein said fiber optic tube means of said disk are of such a size that said disk is capable of producing 1000 equivalent television lines per inch and a resolution of 10 times the size resolution of a typical fluorescent screen.
Claim 8
Dependent Claim
52 words
A device for imaging penetrating radiation as set forth in claim 1, wherein said fiber optic tube means of said disk are of such size that said disk is capable of producing 1000 equivalent television lines per inch and a resolution of 10 times the size resolution of a typical fluorescent screen.
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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |