US3781748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chalcogenide glass bolometer
Assignee: United States Department of the Navy
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Filing: 1971-05-28
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Granted: 1973-12-25
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Expires: 1991-05-28
Abstract
Abstract A chalcogenide glass bolometer for detection of electromagnetic radiation at wavelengths varying from infrared to microwave. The radiation absorbed by the glass increases its electrical conductivity, enabling measurement of the radiation. A method of fabricating the bolometer is also disclosed.
Inventors
- 👤 S Bishop
- 👤 W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:28
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
22 words
A bolometer as recited in claim 1 wherein said detector comprises an alloy system based on the chalcogens S, Se, and Te.
Claim 2
Dependent Claim
21 words
A bolometer as recited in claim 1 wherein said chalcogenide glass is selected from systems consisting of Cd-Ge-As, Cd-Ge-P and As-Te-Se.
Claim 3
Dependent Claim
27 words
A bolometer as recited in claim 3 wherein: said substrate comprises mica; said electrical contacts comprise platinum; and the chemical composition of said chalcogenide detector is Tl2SeAs2Te3.
Claim 4
Dependent Claim
24 words
A bolometer as recited in claim 4 wherein: said electrical contacts are baked onto said substrate; and said detector is pressed onto said substrate.
Claim 5
Dependent Claim
33 words
A bolometer as in claim 1, wherein said chalcogenide glass is selected from systems based on Ge-Te and containing at least one more elements from the group consisting of As, Si and Ge.
References Cited (Backward Citations)
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US2866878A
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US2995660A
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US2884507A
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US3103587A
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US3271591A
Cited
US3312922A
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US3420688A
Cited
US3440588A
Cited
US3443103A
Cited
US3564353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |