Patent US5434415A successfully refreshed from Google Patents.
US5434415A
Expired / Lapsed
US
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Radiation-detecting light-transmission apparatus
Assignee: Tohoku Electric Power Co Inc
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Filing: 1993-12-28
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Granted: 1995-07-18
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Expires: 2013-12-28
Abstract
Abstract A radiation induced light wavelength shifter and an apparatus for detecting radiation and transmitting detected signal through an optical fiber are disclosed. A radiation induced light wavelength shifter used in such apparatus comprises a cylindrical scintillator, a fluorescent optical fiber an end of which is inserted into the scintillator, the fluorescent optical fiber extending out of the scintillator, a light shielding member covering the scintillator and the fluorescent optical fiber, and a light reflecting material covering the scintillator.
Inventors
- 👤 Hideo Terada
- 👤 Kazuo Sakuma
- 👤 Masahiro Takebe
- 👤 Yoshihiro Atsumi
- 👤 Katsumi Urayama
- 👤 Michio Wakahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:47
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T5/00; G01T5/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
56 words
A radiation induced light wavelength shifter comprising: a columnar scintillator; a fluorescent optical fiber which is substantially coaxially inserted into the scintillator, said fluorescent optical fiber extending out of the scintillator; a light shielding member covering said scintillator and said fluorescent optical fiber, and a light reflecting material surrounding said scintillator within said light shielding member.
Claim 2
Dependent Claim
56 words
A radiation induced light wavelength shifter comprising: a columnar scintillator; a fluorescent optical fiber which is substantially coaxially inserted into the scintillator, said fluorescent optical fiber extending out of the scintillator; a light shielding member covering said scintillator and said fluorescent optical fiber, and a light reflecting material surrounding said scintillator within said light shielding member.
Claim 3
Dependent Claim
86 words
A radiation-detecting light-transmission apparatus comprising: a columnar scintillator; a fluorescent optical fiber which is substantially coaxially inserted into the scintillator, said fluorescent optical fiber extending out of the scintillator; a light shielding member covering said scintillator and said fluorescent optical fiber; a light reflecting material surrounding said scintillator arranged in said light shielding member; and an optical transmission fiber which is connected to an end of said fluorescent optical fiber through an optical connector, said optical transmission fiber transmitting light generated in said fluorescent optical fiber.
Claim 4
Dependent Claim
86 words
A radiation-detecting light-transmission apparatus comprising: a columnar scintillator; a fluorescent optical fiber which is substantially coaxially inserted into the scintillator, said fluorescent optical fiber extending out of the scintillator; a light shielding member covering said scintillator and said fluorescent optical fiber; a light reflecting material surrounding said scintillator arranged in said light shielding member; and an optical transmission fiber which is connected to an end of said fluorescent optical fiber through an optical connector, said optical transmission fiber transmitting light generated in said fluorescent optical fiber.
Claim 5
Dependent Claim
106 words
A radiation-detecting light-transmission apparatus comprising: a columnar scintillator; a transparent optical member surrounding said scintillator; a fluorescent optical fiber an end of which is inserted substantially coaxially into said scintillator and which emits light upon receiving light from the scintillator; an optical connector connected to the other end of the fluorescent optical fiber; a light reflecting material covering an outer circumferential and end surfaces of said transparent optical member; a light shielding casing covering said light reflecting material said scintillator and said fluorescent optical fiber; and an optical transmission fiber which is connected to the other end of said fluorescent optical fiber through said optical connector.
Claim 6
Dependent Claim
106 words
A radiation-detecting light-transmission apparatus comprising: a columnar scintillator; a transparent optical member surrounding said scintillator; a fluorescent optical fiber an end of which is inserted substantially coaxially into said scintillator and which emits light upon receiving light from the scintillator; an optical connector connected to the other end of the fluorescent optical fiber; a light reflecting material covering an outer circumferential and end surfaces of said transparent optical member; a light shielding casing covering said light reflecting material said scintillator and said fluorescent optical fiber; and an optical transmission fiber which is connected to the other end of said fluorescent optical fiber through said optical connector.
Claim 7
Dependent Claim
157 words
A radiation-detecting light-transmission apparatus comprising: a plurality of radiation induced light wavelength shifters, each radiation induced light wavelength shifter comprising a columnar scintillator; a transparent optical member surrounding said scintillator; a fluorescent optical fiber which is inserted substantially coaxially into said scintillator and emits light upon receiving light from the scintillator; an optical connector connected to an end of the fluorescent optical fiber; a light reflecting material covering an outer circumferential and end surfaces of said transparent optical member; and a light shielding casing covering said light reflecting material said scintillator and said fluorescent optical fiber; a collimator having a plurality of substantially parallel through holes for holding said radiation induced light wavelength shifters; and a plurality of light transmission fibers each connected separately to an end of one of the plurality of fluorescent optical fibers through an optical connector so that light generated in each fluorescent optical fiber is transmitted through a respective optical transmission fiber.
Claim 8
Dependent Claim
157 words
A radiation-detecting light-transmission apparatus comprising: a plurality of radiation induced light wavelength shifters, each radiation induced light wavelength shifter comprising a columnar scintillator; a transparent optical member surrounding said scintillator; a fluorescent optical fiber which is inserted substantially coaxially into said scintillator and emits light upon receiving light from the scintillator; an optical connector connected to an end of the fluorescent optical fiber; a light reflecting material covering an outer circumferential and end surfaces of said transparent optical member; and a light shielding casing covering said light reflecting material said scintillator and said fluorescent optical fiber; a collimator having a plurality of substantially parallel through holes for holding said radiation induced light wavelength shifters; and a plurality of light transmission fibers each connected separately to an end of one of the plurality of fluorescent optical fibers through an optical connector so that light generated in each fluorescent optical fiber is transmitted through a respective optical transmission fiber.
Claim 9
Dependent Claim
26 words
The radiation-detecting light-transmission apparatus according to claim 4, wherein said through holes are distributed in an m×n matrix pattern, where m and n are natural numbers.
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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) | 1998-07-17 | 1999-01-16 | 1999-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-17 | 2003-01-16 | 2003-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-17 | 2007-01-16 | 2007-07-18 | $7700.00 | Window Closed / Lapsed |