US3743995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two color detector
Assignee: United States Department of the Navy
•
Filing: 1972-03-14
•
Granted: 1973-07-03
•
Expires: 1992-03-14
Abstract
Abstract A two color detector capable of detecting and distinguishing between two different wavelength bands of electromagnetic radiation, one in the visible - 3 mu range and one in the 3 mu - 12 mu range, comprising an amorphous film of [Ge1-y(Pb1-xSnx)y]zTe1-z wherein 0</=x</=1, 0</=y</=1, 0</=z</=1 contacting a material which strongly absorbs radiation in the 3 mu - 12 mu wavelength range.
Inventors
- 👤 H Riedl
- 👤 P Scharnhorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:04
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J5/00; G01J5/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
The two-color detector element of claim 1 wherein said long wavelength absorbing material is also a substrate.
Claim 2
Dependent Claim
22 words
The two-color detector of claim 1 wherein y is 0.04 - 0.35, x is 0.1 - 0.3 and z is about 0.5.
Claim 3
Dependent Claim
20 words
The two-color detector of claim 2 wherein y is 0.04-0.35, x is 0.1 - 0.3 and z is about 0.5.
Claim 4
Dependent Claim
23 words
The two color detector element of claim 1 wherein said long wavelengths absorbing material is present as globules contained in said amorphous film.
Claim 5
Dependent Claim
22 words
The two-color detector element of claim 3 wherein said long wavelength absorbing material is present as globules contained in said amorphous film.
Claim 6
Dependent Claim
16 words
The two-color detector element of claim 1 wherein said long wavelength absorbing material is polymethyl methacrylate.
Claim 7
Dependent Claim
16 words
The two-color detector element of claim 2 wherein said long wavelength absorbing material is polymethyl methacrylate.
Claim 8
Dependent Claim
16 words
The two-color detector element of claim 3 wherein said long wavelength absorbing material is polymethyl methacrylate.
Claim 9
Dependent Claim
16 words
The two-color detector element of claim 4 wherein said long wavelength absorbing material is polymethyl methacrylate.
Claim 10
Dependent Claim
112 words
In the method of detecting and distinguishing between two different wavelength bands of electromagnetic radiation, one in the visible -3 Mu range and one in the 3 Mu - 12 Mu region the improvement comprising using a two-color detector element comprising: an amorphous film of (Ge1 y (Pb1 x Snx)y)Z Te1 z wherein 0 < or = x < or = 1, 0 < or = y < or = 1 and 0 < or = Z < or = 1 contacting a long wavelength absorbing material having an absorption coefficient of no less than about 103 cm 1 and a thermal conductivity of no greater than about 100 milliwatts/(cm2 * K).
Claim 11
Dependent Claim
16 words
The method of claim 11 wherein said long wavelength absorbing material is silicon oxygen based glass.
Claim 12
Dependent Claim
15 words
The method of claim 11 wherein said long wavelength absorbing material is also the substrate.
Claim 13
Dependent Claim
15 words
The method of claim 13 wherein said long wavelength absorbing material is also the substrate.
Claim 14
Dependent Claim
14 words
The method of claim 11 wherein said long wavelength absorbing material is polymethyl methacrylate.
Claim 15
Dependent Claim
52 words
The two-color detector element of claim 1 which additionally comprises two non-adjacent electrodes which are bridged by the amorphous film provided that when a material other than the amorphous film bridges the two non-adjacent electrodes said material has an electrical conductivity that is a factor of 10 less than said amorphous film.
Claim 16
Dependent Claim
54 words
The method of claim 11 wherein the two-color detector element additionally comprises two non-adjacent electrodes which are bridged by the amorphous film provided that when a material other than the amorphous film bridges the two non-adjacent electrodes said material has an electrical conductivity that is a factor of 10 less than said amorphous film.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |