US5268680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined infrared-radar detection system
Assignee: Raytheon Co
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Filing: 1970-09-08
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Granted: 1993-12-07
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Expires: 1990-09-08
Abstract
Abstract A combined infrared-radar detection system wherein a radar antenna also serves as the primary mirror in an infrared focusing arrangement.
Inventors
- 👤 Nicholas G. Zantos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:44
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/008; F41G7/20; F41G7/22; F41G7/2213; F41G7/2253; F41G7/226; F41G7/2273; F41G7/2286; F41G7/2293; F42; F42B; F42B15/00; F42B15/01; G; G01; G01S; G01S13/00; G01S13/86; G01S7/00; G01S7/02; H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; H01Q5/00; H01Q5/20; H01Q5/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
158 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus comprising: (a) an antenna and focusing element, such element having, an aperture centrally formed therein, such element being formed as a radio frequency array antenna for receiving the radio frequency energy, such element having a concave surface for reflecting infrared frequency energy incident thereon and focusing such reflected energy at a point spatially disposed from such element; (b) focusing means, disposed adjacent to such point for directing the infrared energy reflected by the concave surface of the antenna and focusing element through the aperture formed within such element; (c) infrared frequency energy detection means for detecting the infrared energy directed through the aperture formed within the antenna and focusing element; and (d) radio frequency detection means for detecting the radio frequency energy received by the antenna and focusing element.
Claim 2
Dependent Claim
158 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus comprising: (a) an antenna and focusing element, such element having, an aperture centrally formed therein, such element being formed as a radio frequency array antenna for receiving the radio frequency energy, such element having a concave surface for reflecting infrared frequency energy incident thereon and focusing such reflected energy at a point spatially disposed from such element; (b) focusing means, disposed adjacent to such point for directing the infrared energy reflected by the concave surface of the antenna and focusing element through the aperture formed within such element; (c) infrared frequency energy detection means for detecting the infrared energy directed through the aperture formed within the antenna and focusing element; and (d) radio frequency detection means for detecting the radio frequency energy received by the antenna and focusing element.
Claim 3
Dependent Claim
178 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus comprising: (a) an antenna and focusing element, such element having: an inner portion and an outer portion concentric one with the other; an aperture centrally formed therein; and, a plurality of rectangular slots formed therein, such element being responsive to radio frequency energy incident thereon for receiving such radio frequency energy, such inner portion having a concave surface for reflecting infrared energy incident thereon and focusing such reflected energy at a point spatially disposed from such element; (b) focusing means, disposed adjacent to such point, for directing the infrared energy reflected by such concave surface of the antenna and focusing element through the aperture formed within such element; (c) infrared frequency energy detection means for detecting the infrared energy directed through the aperture formed within the antenna and focusing element; and (d) radio frequency detection means for detecting the radio frequency energy received by the antenna and focusing element.
Claim 4
Dependent Claim
178 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus comprising: (a) an antenna and focusing element, such element having: an inner portion and an outer portion concentric one with the other; an aperture centrally formed therein; and, a plurality of rectangular slots formed therein, such element being responsive to radio frequency energy incident thereon for receiving such radio frequency energy, such inner portion having a concave surface for reflecting infrared energy incident thereon and focusing such reflected energy at a point spatially disposed from such element; (b) focusing means, disposed adjacent to such point, for directing the infrared energy reflected by such concave surface of the antenna and focusing element through the aperture formed within such element; (c) infrared frequency energy detection means for detecting the infrared energy directed through the aperture formed within the antenna and focusing element; and (d) radio frequency detection means for detecting the radio frequency energy received by the antenna and focusing element.
Claim 5
Dependent Claim
57 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus wherein the infrared energy is focused to a detector through a Cassegrainian focusing arrangement and a primary reflector of such focusing arrangement is a radio frequency array antenna.
Claim 6
Dependent Claim
57 words
In a system for detecting electromagnetic energy radiating from a target, such energy being in the radio frequency and infrared frequency portion of the electromagnetic spectrum, a receiving apparatus wherein the infrared energy is focused to a detector through a Cassegrainian focusing arrangement and a primary reflector of such focusing arrangement is a radio frequency array antenna.
Claim 7
Dependent Claim
19 words
The receiving apparatus recited in claim 3, wherein the primary reflector has formed therein a plurality of rectangular slots.
Claim 8
Dependent Claim
17 words
A Cassegrainian focusing arrangement for infrared energy, a primary reflector thereof being a radio frequency array antenna.
Claim 9
Dependent Claim
17 words
A Cassegrainian focusing arrangement for infrared energy, a primary reflector thereof being a radio frequency array antenna.
Claim 10
Dependent Claim
50 words
Apparatus for separating infrared energy and radio frequency energy comprising an optical system for focusing infrared energy onto a focal plane, such optical system including a radio frequency array antenna as an element thereof, a boresight axis of the optical system and a boresight axis of the antenna being coaxial.
Claim 11
Dependent Claim
50 words
Apparatus for separating infrared energy and radio frequency energy comprising an optical system for focusing infrared energy onto a focal plane, such optical system including a radio frequency array antenna as an element thereof, a boresight axis of the optical system and a boresight axis of the antenna being coaxial.
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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) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |