US3733499A
Expired / Lapsed
US
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Pyroelectric detector
Assignee: Westinghouse Electric Corp
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Filing: 1972-04-20
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Granted: 1973-05-15
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Expires: 1992-04-20
Abstract
Abstract A pyroelectric detector is disclosed which comprises a crystal of T13AsSe3 having two opposing faces with an electrically conducting electrode contacting each face. The detector is connected to an amplifier, the output of which can be displayed on an oscilloscope or otherwise displayed or utilized electronically. The detector has superior electrical properties and can detect any form of radiation which increases the temperature of the crystal.
Inventors
- 👤 D Deis
- 👤 G Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:13
CPC Classifications
G; G02; G02F; G02F2/00; H; H10; H10N; H10N15/00; H10N15/10; H10N15/15
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
7 words
an electrode contacting each of said faces.
Claim 2
Dependent Claim
14 words
A detector according to claim 1 wherein said faces are perpendicular to said c-axis.
Claim 3
Dependent Claim
12 words
A detector accordIng to claim 1 which also has an optical face.
Claim 4
Dependent Claim
15 words
A detector according to claim 1 wherein at least one of said electrodes is transparent.
Claim 5
Dependent Claim
15 words
A detector according to claim 1 wherein at least one of said electrodes is radiation-absorbent.
Claim 6
Dependent Claim
20 words
A detector according to claim 1 wherein at least one of said electrodes is coated with a radiation absorbing material.
Claim 7
Dependent Claim
31 words
A detector according to claim 1 wherein said crystal is larger than 50 Mu m square by 10 Mu m thick and smaller than 1 cm square by 5 cm long.
Claim 8
Dependent Claim
17 words
A detector according to claim 1 wherein said electrodes are metal films less than 2000 A thick.
Claim 9
Dependent Claim
20 words
A detector according to claim 1 including means connected to said electrodes for amplifying a signal generated in said detector.
Claim 10
Dependent Claim
13 words
A detector according to claim 9 including means for displaying said amplified signal.
References Cited (Backward Citations)
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US3322575A
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US3110685A
Cited
US3444438A
Cited
US3397043A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |