US3153146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal imaging device using a target which rotates the plane of polarization
Assignee: Westinghouse Electric Corp
•
Filing: 1959-06-19
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Granted: 1964-10-13
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Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
- 👤 Lady James Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; G02B23/00; G02B23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A THERMAL IMAGING DEVICE COMPRISING AN INFRARED ABSORBING TARGET, MEANS TO FOCUS AN INFRARED IMAGE FROM AN OBJECT TO BE VIEWED ON TO SAID TARGET, AND MEANS TO IRRADIATE SAID TARGET, SIMULTANEOUSLY WITH SAID INFRARED IMAGE, WITH VISIBLE POLARIZED RADIATION HAVING UNIFORM POLARIZATION ON ALL ELEMENTAL AREAS OF SAID TARGET, SAID TARGET INCLUDING A THERMALLY SENSITIVE FILM OF MATERIAL HAVING THE PROPERTY OF ROTATING THE ANGLE OF THE POLARIZATION VECTOR OF THE INCIDENT VISIBLE POLARIZED LIGHT IN ACCORDANCE WITH TEMPERATURE CHANGES IN ELEMENTAL AREAS OF SAID FILM PRODUCED BY INFRARED RADIATION INCIDENT ON SAID TARGET.
Claim 2
Dependent Claim
95 words
A THERMAL IMAGING DEVICE COMPRISING AN INFRARED ABSORBING TARGET, MEANS TO FOCUS AN INFRARED IMAGE FROM AN OBJECT TO BE VIEWED ON TO SAID TARGET, AND MEANS TO IRRADIATE SAID TARGET, SIMULTANEOUSLY WITH SAID INFRARED IMAGE, WITH VISIBLE POLARIZED RADIATION HAVING UNIFORM POLARIZATION ON ALL ELEMENTAL AREAS OF SAID TARGET, SAID TARGET INCLUDING A THERMALLY SENSITIVE FILM OF MATERIAL HAVING THE PROPERTY OF ROTATING THE ANGLE OF THE POLARIZATION VECTOR OF THE INCIDENT VISIBLE POLARIZED LIGHT IN ACCORDANCE WITH TEMPERATURE CHANGES IN ELEMENTAL AREAS OF SAID FILM PRODUCED BY INFRARED RADIATION INCIDENT ON SAID TARGET.
References Cited (Backward Citations)
US1642011A
Cited
US2152202A
Cited
US2123743A
Cited
US2442396A
Cited
US2418964A
Cited
US2768557A
Cited
US2824235A
Cited
US2879424A
Cited
US2974568A
Cited
US3015693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |