Patent US3666949A successfully refreshed from Google Patents.
US3666949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded optical radiation detecting device
Assignee: Raytheon Co
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Filing: 1970-09-28
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Granted: 1972-05-30
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Expires: 1990-09-28
Abstract
Abstract An optical radiation detecting device adapted particularly for temperature detection systems such as welding apparatus and which comprises a fluid-cooled fiber optic radiation sensing and transmitting means having means for shielding the sensing portion of the device from extraneous or stray radiation in the visible and near visible portions of the spectrum.
Inventors
- 👤 Frank A De Falco
- 👤 Stephen N Bobo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:30
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/06; G01J5/0044; G01J5/04; G01J5/041; G01J5/061; G01J5/08; G01J5/0818; G01J5/0821; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/3616; G02B6/3624; G02B6/38; G02B6/3807; G02B6/381; G02B6/3814; G02B6/42; G02B6/4201; G02B6/4202; G01J5/046
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
95 words
A device for detecting optical radiation from a source comprising a radiation-transparent bundle of optical fibers having a first end adapted to be disposed adjacent said source to receive optical radiation therefrom, a radiation detector at the opposite end of the bundle for detection of radiation which passes through the bundle from said first end, and means surrounding said first end and adjacent portion of the bundle and adapted to surround said source for intercepting all optical radiation except that which emanates from said source and thereby preventing stray optical radiation from entering the bundle.
Claim 2
Independent Claim
95 words
A device for detecting optical radiation from a source comprising a radiation-transparent bundle of optical fibers having a first end adapted to be disposed adjacent said source to receive optical radiation therefrom, a radiation detector at the opposite end of the bundle for detection of radiation which passes through the bundle from said first end, and means surrounding said first end and adjacent portion of the bundle and adapted to surround said source for intercepting all optical radiation except that which emanates from said source and thereby preventing stray optical radiation from entering the bundle.
Claim 3
Dependent Claim
17 words
A device as set forth in claim 1 wherein said means is a bundle of opaque fibers.
Claim 4
Dependent Claim
28 words
A device as set forth in claim 2 wherein said opaque fibers are flexible so as to conform with the surface of the source when in engagement therewith.
Claim 5
Independent Claim
113 words
A device for detecting optical radiation from a source comprising an elongated fixture having a longitudinally extending opening, an optical radiation-transparent bundle of optical fibers within said opening and having a first end projecting outwardly from one end of the fixture and adapted to be disposed in proximity to said source for receiving optical radiation therefrom, an optical radiation detector adjacent the opposite end of the bundle, and a sheath of opaque fibers mounted in said fixture and surrounding said projecting portion of the bundle and adapted to surround said source for intercepting all optical radiation except that which emanates from said source and for preventing stray optical radiation from entering the bundle.
Claim 6
Independent Claim
113 words
A device for detecting optical radiation from a source comprising an elongated fixture having a longitudinally extending opening, an optical radiation-transparent bundle of optical fibers within said opening and having a first end projecting outwardly from one end of the fixture and adapted to be disposed in proximity to said source for receiving optical radiation therefrom, an optical radiation detector adjacent the opposite end of the bundle, and a sheath of opaque fibers mounted in said fixture and surrounding said projecting portion of the bundle and adapted to surround said source for intercepting all optical radiation except that which emanates from said source and for preventing stray optical radiation from entering the bundle.
Claim 7
Dependent Claim
53 words
A device as set forth in claim 4 wherein a sleeve is positioned in the opening in the fixture, and the fiber bundle and sheath of opaque fibers are carried by the sleeve for movement therewith to adjust the extent tO which the fibers and sheath extend beyond the end of the fixture.
Claim 8
Dependent Claim
17 words
A device as set forth in claim 4 wherein the opaque fibers in said sheath are flexible.
Claim 9
Dependent Claim
50 words
A device as set forth in claim 5 wherein said sleeve is slidably mounted in said fixture, the fixture is provided with an internal cavity which encircles said sleeve, and inlet and outlet means is provided through the fixture into the cavity to permit flow of coolant through the cavity.
Claim 10
Dependent Claim
140 words
A weld temperature detection device comprising an elongated fixture having a longitudinally extending opening, an infrared-transparent bundle of optical fibers within said opening and having a first end portion projecting outwardly from one end of the fixture for position adjacent a weld for collecting infrared radiation from the weld, the fiber bundle extending from the opposite end of the fixture and having a second end remote from the fixture, a sheath of opaque fibers mounted in said fixture in surrounding relation to the portion of the bundle which projects from the fixture and adapted to surround the weld for intercepting all infrared radiation except that which emanates from the weld, a second fixture carrying said second end of the bundle, and an infrared detector in said second fixture positioned to receive infrared radiation from the adjacent end of the bundle.
Claim 11
Dependent Claim
140 words
A weld temperature detection device comprising an elongated fixture having a longitudinally extending opening, an infrared-transparent bundle of optical fibers within said opening and having a first end portion projecting outwardly from one end of the fixture for position adjacent a weld for collecting infrared radiation from the weld, the fiber bundle extending from the opposite end of the fixture and having a second end remote from the fixture, a sheath of opaque fibers mounted in said fixture in surrounding relation to the portion of the bundle which projects from the fixture and adapted to surround the weld for intercepting all infrared radiation except that which emanates from the weld, a second fixture carrying said second end of the bundle, and an infrared detector in said second fixture positioned to receive infrared radiation from the adjacent end of the bundle.
Claim 12
Dependent Claim
28 words
A device as set forth in claim 8 wherein said opaque fibers are flexible so as to conform to the shape of the weld when in engagement therewith.
Claim 13
Dependent Claim
34 words
A device as set forth in claim 9 wherein said end of the bundle is optically degraded and is a reradiator of infrared radiation when in position of use adjacent a radiating weld body.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |