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US4160907A
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Thermo-optical far infrared system
Assignee: United States Department of the Army
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Filing: 1978-02-08
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Granted: 1979-07-10
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Expires: 1998-02-08
Abstract
Abstract A forward-locking far infrared system employing a modulator for infrared iation directed onto one side of a thermal-to-optical transducer. The transducer also has directed onto the same side visible or near infrared radiation. The transducer thus produces a visible or infrared transmission or reflection image of the far infrared scene. This image is detected by an accoupled optical amplifier which provides a signal for a visible display.
Inventors
- 👤 Vincent T. Bly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:49
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
75 words
An infrared imaging device including a thin-film thermal-to-optical transducer having an image side and an other side; means for projecting an infrared image on said image side of said transducer; a chopper interposed between said means and said transducer; radiation producing means for projecting a read radiaton on said image side of said transducer; scanning image detecting means adjacent said transducer on said other side; and image display means connected to said image detecting means.
Claim 2
Dependent Claim
75 words
An infrared imaging device including a thin-film thermal-to-optical transducer having an image side and an other side; means for projecting an infrared image on said image side of said transducer; a chopper interposed between said means and said transducer; radiation producing means for projecting a read radiaton on said image side of said transducer; scanning image detecting means adjacent said transducer on said other side; and image display means connected to said image detecting means.
Claim 3
Dependent Claim
15 words
The device as set forth in claim 1 wherein said transducer is an absorption-edge transducer.
Claim 4
Dependent Claim
21 words
The device as set forth in claim 2 wherein said means for projecting a read radiation is a stabilized laser diode.
Claim 5
Dependent Claim
38 words
The device as set forth in claim 2 wherein said transducer is taken from the group consisting of arsenic modified sellium-tellurium glass, HgI 2 , PbI 2 , (DMA) 3 CuCl 5 , and the dye Rhodamine C.
References Cited (Backward Citations)
US3939346A
Cited
US3919555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |