US4423325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-spectral Schottky barrier infrared radiation detection array
Assignee: Honeywell Inc
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Filing: 1981-09-02
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Granted: 1983-12-27
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Expires: 2001-09-02
Abstract
Abstract A multi-spectral Schottky barrier infrared detector array in which individual pixels of radiation from a remote radiating object are detected by two or more Schottky barrier infrared radiation detectors each having a different spectral response so as to provide a "color" discrimination for the array.
Inventors
- 👤 Norman A. Foss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/15; H10F39/157
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
49 words
An infrared detector array comprising: a plurality of pixels for sensing infrared radiation, each pixel comprising a plurality of Schottky barrier detectors, each detector in a pixel having a different barrier height so as to produce an output for each pixel indicative of infrared radiation of a different wavelength.
Claim 2
Dependent Claim
49 words
An infrared detector array comprising: a plurality of pixels for sensing infrared radiation, each pixel comprising a plurality of Schottky barrier detectors, each detector in a pixel having a different barrier height so as to produce an output for each pixel indicative of infrared radiation of a different wavelength.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 including means for transferring the outputs of the detectors to a shift register for readout.
Claim 4
Dependent Claim
24 words
Apparatus according to claim 1 wherein each pixel comprises two or more detectors with each of the detectors having a different infrared wavelength cutoff.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 wherein the detectors have a substantially common annealing schedule.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 3 wherein the detectors are comprised of palladium silicide, platinum silicide and iridium silicide on a p-type silicon base respectively.
Claim 7
Dependent Claim
80 words
A monolithic infrared detector CCD structure comprising: a first plurality of Schottky barrier detectors having an infrared response cutoff of λ1; a second plurality of Schottky barrier detectors having an infrared response cutoff of λ2, a plurality of pixels formed on the structure with each pixel comprising a detector of the first plurality and a detector of the second plurality; shift register means; and transfer means for transferring the outputs of each detector to the shift register for further utilization.
Claim 8
Dependent Claim
80 words
A monolithic infrared detector CCD structure comprising: a first plurality of Schottky barrier detectors having an infrared response cutoff of λ1; a second plurality of Schottky barrier detectors having an infrared response cutoff of λ2, a plurality of pixels formed on the structure with each pixel comprising a detector of the first plurality and a detector of the second plurality; shift register means; and transfer means for transferring the outputs of each detector to the shift register for further utilization.
Claim 9
Dependent Claim
23 words
Apparatus according to claim 6 wherein the first plurality of detectors and the second plurality of detectors have a substantially common annealing schedule.
Claim 10
Dependent Claim
32 words
Apparatus according to claim 7 wherein the first and second plurality of detectors are chosen from a group consisting of palladium silicide, platinum silicide and iridium silicide on a p-type silicon base.
Claim 11
Dependent Claim
28 words
Apparatus according to claim 6 including a third plurality of Schottky barrier detectors and each of the plurality of pixels includes one of the third plurality of detectors.
Claim 12
Dependent Claim
46 words
Apparatus according to claim 9 wherein the first plurality of detectors comprises palladium silicide on a p-type silicon base, the second plurality of detectors comprises platinum silicide on a p-type silicon base and the third plurality of detectors comprises iridium silicide on a p-type silicon base.
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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |