Patent US3222522A successfully refreshed from Google Patents.
US3222522A
Expired / Lapsed
US
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Infrared detector utilizing an integrating sphere radiometer
Assignee: Individual
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Filing: 1963-04-29
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Granted: 1965-12-07
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Richard C Birkebak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:38
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/0252; G01J1/0271; G01K; G01K17/00; G01J1/04; G01J2001/0481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A RADIATION DETECTING APPARATUS COMPRISING: (A) AN INTEGRATING SPHERE RADIOMETER HAVING A DIFFUSE REFLECTOR SURFACE WITH A CONSTANT AND HIGH REFLECTANCE VALUE IN THE SPECTRAL DIRECTION FOR PRODUCING A SUBSTANTIALLY UNIFORM RADIATION DENSITY WITHIN SAID SPHERE AT ANY POINT ON SAID DIFFUSE REFLECTOR SURFACE, SAID SPHERE HAVING AT LEAST A PAIR OF OPENINGS THEREIN, ONE OF WHICH IS ADAPTED TO FACE A SOURCE OF RADIATION; (B) THERMAL INSULATION MEANS SURROUNDING SAID INTEGRATING SPHERE RADIOMETER AND HAVING AN OPENING THEREIN REGISTERING WITH THE OPENING OF SAID SPHERE AND ADAPTED TO FACE A SOURCE OF RADIATION AND HAVING AT LEAST ONE CAVITY REGISTERING WITH ANOTHER OF SAID OPENINGS IN SAID INTEGRATING SPHERE; (C) AND RADIATION SENSITIVE MEANS MOUNTED IN SAID CAVITY OF SAID INSULATION MEANS AND COMMUNICATING WITH SAID OPENING IN SAID SPHERE TO RECEIVE SAID UNIFORM RADIATION AND PRODUCE A SIGNAL REPRESENTATIVE OF SAID RADIATION.
Claim 2
Dependent Claim
144 words
A RADIATION DETECTING APPARATUS COMPRISING: (A) AN INTEGRATING SPHERE RADIOMETER HAVING A DIFFUSE REFLECTOR SURFACE WITH A CONSTANT AND HIGH REFLECTANCE VALUE IN THE SPECTRAL DIRECTION FOR PRODUCING A SUBSTANTIALLY UNIFORM RADIATION DENSITY WITHIN SAID SPHERE AT ANY POINT ON SAID DIFFUSE REFLECTOR SURFACE, SAID SPHERE HAVING AT LEAST A PAIR OF OPENINGS THEREIN, ONE OF WHICH IS ADAPTED TO FACE A SOURCE OF RADIATION; (B) THERMAL INSULATION MEANS SURROUNDING SAID INTEGRATING SPHERE RADIOMETER AND HAVING AN OPENING THEREIN REGISTERING WITH THE OPENING OF SAID SPHERE AND ADAPTED TO FACE A SOURCE OF RADIATION AND HAVING AT LEAST ONE CAVITY REGISTERING WITH ANOTHER OF SAID OPENINGS IN SAID INTEGRATING SPHERE; (C) AND RADIATION SENSITIVE MEANS MOUNTED IN SAID CAVITY OF SAID INSULATION MEANS AND COMMUNICATING WITH SAID OPENING IN SAID SPHERE TO RECEIVE SAID UNIFORM RADIATION AND PRODUCE A SIGNAL REPRESENTATIVE OF SAID RADIATION.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |