US3580678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical pyrometers
Assignee: Cross Electronics Inc
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Filing: 1968-12-18
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Granted: 1971-05-25
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Expires: 1988-12-18
Abstract
Abstract I disclose, in an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter disposed in a light path of said optical system, for passing a portion of said incident radiation to a direct viewing aperture of said optical system and the remainder of said incident radiation to a second aperture of said optical system, light sensitive detecting means juxtaposed to said second aperture for receiving incident radiation passing therethrough, and said direct viewing aperture and said second aperture being sized so that the light sensitive area of said detecting means is completely covered by said second aperture radiation when an object image focused by said optical system completely fills said direct viewing aperture.
Inventors
- 👤 Terrance S Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:23
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/02; G01J5/026; G01J5/06; G01J5/061; G01J5/08; G01J5/0801; G01J5/0806; G01J5/0859; G01J5/0879; G01J5/0893; G01J5/52; G01J5/53; G01J5/60; G01J5/602; G01J5/70
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
129 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter including a primarily reflective light-transmitting member disposed in a light path of said optical system for passing a minor portion of said incident radiation to a direct viewing aperture of said optical system and remainder of said incident radiation to a second aperture of said optical system, light sensitive detecting means juxtaposed to said second aperture for receiving incident radiation passing therethrough, and said direct viewing aperture and said second aperture being shaped so that the light sensitive area of said detecting means is completely covered by said second aperture radiation when an object image focused by said optical system completely fills said direct viewing aperture.
Claim 2
Dependent Claim
129 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter including a primarily reflective light-transmitting member disposed in a light path of said optical system for passing a minor portion of said incident radiation to a direct viewing aperture of said optical system and remainder of said incident radiation to a second aperture of said optical system, light sensitive detecting means juxtaposed to said second aperture for receiving incident radiation passing therethrough, and said direct viewing aperture and said second aperture being shaped so that the light sensitive area of said detecting means is completely covered by said second aperture radiation when an object image focused by said optical system completely fills said direct viewing aperture.
Claim 3
Dependent Claim
68 words
The combination according to claim 1 wherein said optical system includes objective and viewing lens having a common optical axis and direct-viewing path therebetween, and said beam splitter member is disposed in said direct-viewing path, said member being capable of transmitting said minor portion directly to said direct viewing aperture and of reflecting said remainder to said second aperture along a path in an angle to said axis.
Claim 4
Dependent Claim
23 words
The combination according to claim 2 wherein said beam splitter includes a pair of substantially transparent prisms enclosing a primarily reflecting means therebetween.
Claim 5
Dependent Claim
21 words
The combination according to claim 2 wherein said beam splitter is a substantially transparent plate having a primarily reflecting coating thereon.
Claim 6
Dependent Claim
92 words
The combination according to claim 1 wherein a heat sink is provided for said light detecting means, said light detecting means are mounted on said heat sink in good heat transfer relation therewith, additional light sensitive means are similarly mounted on said heat sink at a position removed from said aperture so to be ''''dark'''' with respect to radiation, and circuit means are provided for connecting the first mentioned and said additional light sensitive means in electrical bucking relation to external temperature indicating means for cancellation of ambient effects and the like.
Claim 7
Dependent Claim
59 words
The combination according to claim 1 wherein a second beam splitter is juxtaposed to said second aperture for splitting radiation passing through said second aperture into light paths of substantially equal energy levels, and said detector means include a light sensitive detector interposed in each of said paths, said detectors being sensitive to differing wave lengths of said radiation.
Claim 8
Dependent Claim
40 words
The combination according to claim 6 wherein a bridge circuit is provided for differentiating and amplifying the outputs of said light detectors respectively and said outputs are coupled respectively in shunting relation across matched inductances forming part of said bridge.
Claim 9
Dependent Claim
45 words
The combination according to claim 7 wherein calibrational circuit means are coupled in series with one of said detector outputs and a movable shutter is provided for aperture means interposed between an objective lens forming part of said optical system and said first-mentioned beam splitter.
Claim 10
Dependent Claim
23 words
The combination according to claim 1 wherein said minor portion of the incident radiation is of the order of about 10 percent thereof.
Claim 11
Dependent Claim
76 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter including a primarily reflective light-transmitting member disposed in a light path of said optical system for passing a minor portion of said incident radiation directly to viewing means of said optical system and the remainder of said incident radiation to light sensitive detecting means for indicating the amount of incident radiation passing thereto.
Claim 12
Dependent Claim
76 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter including a primarily reflective light-transmitting member disposed in a light path of said optical system for passing a minor portion of said incident radiation directly to viewing means of said optical system and the remainder of said incident radiation to light sensitive detecting means for indicating the amount of incident radiation passing thereto.
Claim 13
Dependent Claim
118 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, means disposed in a light path of said optical system for passing a portion of said incident radiation for direct viewing purposes to first light-transmitting means and the remainder of said incident radiation to second light-transmitting means, light sensitive detecting means juxtaposed to said second light transmitting means for receiving incident radiation passing therethrough, said first and said second light-transmitting means being interrelated such that a light sensitive area of said detecting means is completely covered by said second light-transmitting means radiation when substantially a maximum cross-sectional area of said radiation is passed thRough said first light-transmitting means.
Claim 14
Dependent Claim
118 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, means disposed in a light path of said optical system for passing a portion of said incident radiation for direct viewing purposes to first light-transmitting means and the remainder of said incident radiation to second light-transmitting means, light sensitive detecting means juxtaposed to said second light transmitting means for receiving incident radiation passing therethrough, said first and said second light-transmitting means being interrelated such that a light sensitive area of said detecting means is completely covered by said second light-transmitting means radiation when substantially a maximum cross-sectional area of said radiation is passed thRough said first light-transmitting means.
Claim 15
Dependent Claim
48 words
The combination according to claim 10 wherein a second beam splitter is juxtaposed to said detecting means for splitting radiation passing to said detecting means into light paths of substantially equal energy levels, and said detecting means include a light sensitive detector interposed in each of said paths.
Claim 16
Dependent Claim
63 words
The combination according to claim 11 wherein a second beam splitter is juxtaposed to said second light transmitting means for splitting radiation passing through said second light transmitting means into light paths of substantially equal energy levels, and said detector means include a light sensitive detector interposed in each of said paths, said detectors being sensitive to differing wave lengths of said radiation.
Claim 17
Dependent Claim
144 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter disposed in a light path of said optical system for passing a portion of said incident radiation to direct viewing means of said optical system and the remainder of said incident radiation to light sensitive detecting means, a heat sink for said detecting means, said detecting means including a pair of light sensitive detectors similarly mounted in hood heat transfer relation on said heat sink, said detectors being so disposed that one of said detectors is exposed to said radiation remainder while the other of said detector is ''''dark'''' with respect to said radiation, and circuit means are provided for connecting said detectors in electrical bucking relation to an external temperature indicating circuit for cancellation of ambient effects and the like.
Claim 18
Dependent Claim
144 words
In an optical pyrometer system, the combination comprising an optical system for receiving and focusing incident radiation from an object, a beam splitter disposed in a light path of said optical system for passing a portion of said incident radiation to direct viewing means of said optical system and the remainder of said incident radiation to light sensitive detecting means, a heat sink for said detecting means, said detecting means including a pair of light sensitive detectors similarly mounted in hood heat transfer relation on said heat sink, said detectors being so disposed that one of said detectors is exposed to said radiation remainder while the other of said detector is ''''dark'''' with respect to said radiation, and circuit means are provided for connecting said detectors in electrical bucking relation to an external temperature indicating circuit for cancellation of ambient effects and the like.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |