Patent US3736428A successfully refreshed from Google Patents.
US3736428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detecting with ultraviolet light
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1958-03-27
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Granted: 1973-05-29
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Expires: 1978-03-27
Abstract
Abstract 1. A method of detection in the presence of ambient light comprising the steps of beaming a source of ultraviolet light pulsed at a predetermined frequency upon a surface under scrutiny from an aircraft, scanning the beam of ultraviolet light in a direction perpendicular to the travel of said aircraft, detecting visible light emanating from said surface, and eliminating the effect of light whose intensity varies at a rate below said predetermined frequency from light detected in said step of detecting visible light.
Inventors
- 👤 J Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:07
CPC Classifications
G; G01; G01V; G01V8/00; G01V8/02; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/17; G01N2021/1793
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A method of detection in the pressure of ambient light comprising the steps of beaming a source of ultraviolet light pulsed at a predetermined frequency upon a surface under scrutiny from an aircraft, scanning the beam of ultra-violet light in a direction perpendicular to the travel of said aircraft, detecting visible light emanating from said surface, and eliminating the effect of light whose intensity varies at a rate below said predetermined frequency from light detected in said step of detecting visible light.
Claim 2
Independent Claim
82 words
A method of detection in the pressure of ambient light comprising the steps of beaming a source of ultraviolet light pulsed at a predetermined frequency upon a surface under scrutiny from an aircraft, scanning the beam of ultra-violet light in a direction perpendicular to the travel of said aircraft, detecting visible light emanating from said surface, and eliminating the effect of light whose intensity varies at a rate below said predetermined frequency from light detected in said step of detecting visible light.
Claim 3
Independent Claim
97 words
A device for detecting the fluorescent properties of a surface comprising a source of ultraviolet light pulsed at a predetermined frequency and located in a vehicle moving with respect to said surface for irradiating said surface with said ultraviolet light, means for moving said source in an arcuate path relative to said vehicle, means for detecting visible light emanating from said surface in response to the said irradiation of said surface, and means for eliminating the effect of light detected by said means for detecting visible light whose intensity varies at a rate below said predetermined frequency.
Claim 4
Independent Claim
97 words
A device for detecting the fluorescent properties of a surface comprising a source of ultraviolet light pulsed at a predetermined frequency and located in a vehicle moving with respect to said surface for irradiating said surface with said ultraviolet light, means for moving said source in an arcuate path relative to said vehicle, means for detecting visible light emanating from said surface in response to the said irradiation of said surface, and means for eliminating the effect of light detected by said means for detecting visible light whose intensity varies at a rate below said predetermined frequency.
Claim 5
Dependent Claim
21 words
A device as is recited in claim 2 wherein means are provided to spectrally divide the visible light to be detected.
Claim 6
Dependent Claim
37 words
A device according to claim 3 wherein means are provided for recording the intensity of the light whose intensity varies at a rate not less than said predetermined frequency detected by said means to detect visible light.
Claim 7
Dependent Claim
37 words
A device according to claim 2 wherein means are provided for recording the intensity of the light whose intensity varies at a rate not less then said predetermined frequency detected by said means to collect visible light.
Claim 8
Independent Claim
98 words
A device for detecting the fluorescent properties of a surface, said device comprising an aircraft, a source of ultraviolet light pulsed at a predetermined frequency mounted on said aircraft for irradiating said surface with said ultraviolet light, means for moving said source in an arcuate path relative to said vehicle, means for detecting visiblE light emanating from said surface in response to the said irradiation of said surface mounted on said aircraft, and means for eliminating the effect of light detected by said means for detecting visible light whose intensity varies at a rate below said predetermined frequency.
Claim 9
Independent Claim
98 words
A device for detecting the fluorescent properties of a surface, said device comprising an aircraft, a source of ultraviolet light pulsed at a predetermined frequency mounted on said aircraft for irradiating said surface with said ultraviolet light, means for moving said source in an arcuate path relative to said vehicle, means for detecting visiblE light emanating from said surface in response to the said irradiation of said surface mounted on said aircraft, and means for eliminating the effect of light detected by said means for detecting visible light whose intensity varies at a rate below said predetermined frequency.
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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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |