Patent US5365084A successfully refreshed from Google Patents.
US5365084A
Expired / Lapsed
US
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Video inspection system employing multiple spectrum LED illumination
Assignee: Pressco Technology Inc
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Filing: 1992-12-14
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Granted: 1994-11-15
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Expires: 2012-12-14
Abstract
Abstract An engineered lighting system for high speed video inspection includes an array of light emitting diodes including light emitting diodes for use in time delay integration (TDI) inspection of web materials. The light emitting diodes of the array are selectively controllable to accomplish sequential illumination and carefully controllable imaging of a specified section of a continuously moving specimen or specimens. LEDs with different wavelength light output, or multi-wavelength light LEDs are utilized for rapid and reliable inspection of surfaces with varying color or contour or detect characteristics. The system also includes an array of optional backlighting elements to aid in illumination of semi-opaque specimens to accomplish inspection thereof.
Inventors
- 👤 Don W. Cochran
- 👤 James E. Triner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:08
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/8901; G01N21/8806; G01N21/8903; H; H04; H04N; H04N7/00; H04N7/18; H04N7/181; H04N7/188; G01N2021/8835; G01N2021/8845; G01N21/8851; G01N2021/8887; G01N2201/00; G01N2201/06; G01N2201/062; G01N2201/0621
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
93 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; and video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen.
Claim 2
Dependent Claim
93 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; and video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen.
Claim 3
Dependent Claim
35 words
The engineered video inspection illumination system of claim 1 wherein the video reception means includes isolation means for segregating the first and second wavelength quanta of the inspection light into first and second images, respectively.
Claim 4
Dependent Claim
80 words
The engineered video inspection illumination system of claim 2 wherein the video receptor means includes first and second video sensors, and wherein the isolation means includes: a first filter, adapted to filter a first selected wavelength, disposed to intercept the inspection light prior to exposure to the first video sensor; and a second filter, adapted to filter a selected wavelength, different than the first selected wavelength, disposed to intercept the inspection light prior to exposure of the second video sensor.
Claim 5
Dependent Claim
48 words
The engineered video inspection illumination system of claim 2 wherein the video receptor means includes first and second spatially separated video sensors, and wherein the isolation means includes a prism disposed to intercept the inspection light prior to exposure of the first and second spatially separated video sensors.
Claim 6
Dependent Claim
49 words
The engineered video inspection illumination system of claim 2 wherein the video receptor means includes first and second spatially separated video sensors, and wherein the isolation means includes a diffraction grating disposed to intercept the inspection light prior to exposure of the first and second spatially separated video sensors.
Claim 7
Dependent Claim
25 words
The engineered video inspection illumination system of claim 2 wherein the light emitting diodes of the first array are composed of visible light generating devices.
Claim 8
Dependent Claim
43 words
The engineered video inspection illumination system of claim 1 wherein the first array includes: a first plurality of diodes, each of which provide light at a first wavelength quanta; and a second plurality of diodes which provide light at a second wavelength quanta.
Claim 9
Dependent Claim
87 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta, wherein the first array includes a plurality of multi-spectrum diodes; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; and means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths.
Claim 10
Dependent Claim
87 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta, wherein the first array includes a plurality of multi-spectrum diodes; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; and means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths.
Claim 11
Dependent Claim
149 words
An engineered video inspection system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; means for receiving a displacement signal representative of a linear displacement of the associated specimen relative to the first array over a selected scan period; and controller means for selectively supplying a current pulse to the light emitting diodes during the scan period in accordance with the displacement signal such that each of a plurality of generally linear sections of the associated specimen is illuminated a plurality of times by the light emitting diodes.
Claim 12
Dependent Claim
149 words
An engineered video inspection system comprising: a first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; means for receiving a displacement signal representative of a linear displacement of the associated specimen relative to the first array over a selected scan period; and controller means for selectively supplying a current pulse to the light emitting diodes during the scan period in accordance with the displacement signal such that each of a plurality of generally linear sections of the associated specimen is illuminated a plurality of times by the light emitting diodes.
Claim 13
Dependent Claim
27 words
The engineered video inspection illumination system of claim 9 further comprising: video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen.
Claim 14
Dependent Claim
35 words
The engineered video inspection illumination system of claim 10 wherein the video receptor means includes isolation means for segregating the first and second wavelength quanta of the inspection light into first and second images, respectively.
Claim 15
Dependent Claim
84 words
The engineered video inspection illumination system of claim 11 wherein the video receptor means includes first and second video sensors, and wherein the isolation means includes: a first filter, adapted to filter at least a first selected wavelength, disposed to intercept the inspection light prior to exposure to the first video sensor; and a second filter, adapted to filter at least a selected wavelength, different than the first selected wavelength, disposed to intercept the inspection light prior to exposure of the second video sensor.
Claim 16
Dependent Claim
24 words
The engineered video inspection system of claim 12 wherein the light emitting diodes of the first array are composed of visible light generating devices.
Claim 17
Dependent Claim
48 words
The engineered video inspection illumination system of claim 11 wherein the video receptor means includes first and second spatially separated video sensors, and wherein the isolation means includes a prism disposed to intercept the inspection light prior to exposure of the first and second spatially separated video sensors.
Claim 18
Dependent Claim
49 words
The engineered video inspection illumination system of claim 11 wherein the video receptor means includes first and second spatially separated video sensors, and wherein the isolation means includes a diffraction grating disposed to intercept the inspection light prior to exposure of the first and second spatially separated video sensors.
Claim 19
Dependent Claim
43 words
The engineered video inspection illumination system of claim 9 wherein the first array includes: a first plurality of diodes, each of which provide light at a first wavelength subset; and a second plurality of diodes which provide light at a second wavelength subset.
Claim 20
Dependent Claim
19 words
The engineered video inspection illumination system of claim 9 wherein the first array includes a plurality of multi-spectra diodes.
Claim 21
Independent Claim
118 words
A method of multiple wavelength video inspection specimen illumination comprising the steps of: selectively providing a current pulse to first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta, the step including selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; illuminating an associated specimen disposed in an illumination region of the first array with light of the first array; receiving a displacement signal representative of a linear displacement of an associated specimen relative to the array; and selectively providing the current pulse so as to provide the current pulse in accordance with the displacement signal.
Claim 22
Independent Claim
118 words
A method of multiple wavelength video inspection specimen illumination comprising the steps of: selectively providing a current pulse to first array of light emitting diodes adapted to provide illumination of a plurality of selected wavelength quanta, the step including selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; illuminating an associated specimen disposed in an illumination region of the first array with light of the first array; receiving a displacement signal representative of a linear displacement of an associated specimen relative to the array; and selectively providing the current pulse so as to provide the current pulse in accordance with the displacement signal.
Claim 23
Dependent Claim
31 words
The method of multiple wavelength video inspection of claim 18 further comprising the step of selectively providing the current pulse so as to provide the illumination with a specified spectral content.
Claim 24
Dependent Claim
30 words
The method of multiple wavelength video inspection of claim 19 further comprising the step of selectively providing the current pulse so as to provide the illumination with a specified duration.
Claim 25
Dependent Claim
33 words
The method of claim 20 wherein the step of selectively providing includes the step of selectively supplying the current to the first array so as to generate inspection light composed of visible light.
Claim 26
Dependent Claim
118 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of at least one selected wavelength range; a second light source, formed from at least one conventional lamp, adapted to provide illumination of a plurality secondary wavelengths; first securing means adapted to secure the first array and the second light source so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; and video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen.
Claim 27
Dependent Claim
118 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of at least one selected wavelength range; a second light source, formed from at least one conventional lamp, adapted to provide illumination of a plurality secondary wavelengths; first securing means adapted to secure the first array and the second light source so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of first and second wavelengths; and video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen.
Claim 28
Dependent Claim
48 words
The engineered video inspection illumination system of claim 22 wherein the video receptor means includes isolation means for segregating the first and second wavelength of the inspection light into a first image and at least a second wavelength of the plurality of secondary wavelengths into a second image.
Claim 29
Dependent Claim
81 words
The engineered video inspection illumination system of claim 23 wherein the video receptor means includes first and second video sensors, and wherein the isolation means includes: a first filter, adapted to filter a first selected wavelength, disposed to intercept the inspection light prior to exposure to the first video sensor; and a second filter, adapted to filter the second selected wavelength, different than the first selected wavelength, disposed to intercept the inspection light prior to exposure of the second video sensor.
Claim 30
Dependent Claim
25 words
The engineered video inspection illumination system of claim 24 wherein the light emitting diodes of the first array are composed of visible light generating devices.
Claim 31
Dependent Claim
136 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of at least one selected wavelength range; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of at least a first wavelengths; video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen; means for securing the video receptor means so as to be non-orthogonal to a direction of travel of the associated specimen relative thereto; and the video receptor means including a perspective control lens having its field of view directed to the illumination region.
Claim 32
Dependent Claim
136 words
An engineered video inspection illumination system comprising: a first array of light emitting diodes adapted to provide illumination of at least one selected wavelength range; first securing means adapted to secure the first array so as to illuminate an associated specimen disposed in an illumination region of the first array; means for selectively supplying current to the first array so as to generate inspection light therefrom having a selected light constituent of at least a first wavelengths; video receptor means adapted for receiving the inspection light after exposure thereof to the associated specimen; means for securing the video receptor means so as to be non-orthogonal to a direction of travel of the associated specimen relative thereto; and the video receptor means including a perspective control lens having its field of view directed to the illumination region.
Claim 33
Dependent Claim
63 words
The engineered video inspection system of claim 26 wherein: the first array of light emitting diodes includes means for providing illumination of at least a second selected wavelength range; the means for selectively supplying current to the first array includes means for selectively supplying current thereto so as to generate inspection light therefrom having a selected light constituent of the second wavelength range.
Claim 34
Dependent Claim
33 words
The engineered video inspection illumination system of claim 27 wherein the video receptor means includes isolation means for segregating light of the first and second wavelength range into first and second images, respectively.
Claim 35
Dependent Claim
80 words
The engineered video inspection illumination system of claim 28 wherein the video receptor means includes first and second video sensors, and wherein the isolation means includes: a first filter, adapted to filter a first selected wavelength, disposed to intercept the inspection light prior to exposure to the first video sensor; and a second filter, adapted to filter a selected wavelength, different than the first selected wavelength, disposed to intercept the inspection light prior to exposure of the second video sensor.
Claim 36
Dependent Claim
85 words
The engineered video inspection illumination system of claim 29 further comprising: means for receiving a displacement signal representative of a linear displacement of the associated specimen relative to the first array over a selected scan period; and controller means for selectively supplying a current pulse to the light emitting diodes during the scan period in accordance with the displacement signal such that each of a plurality of generally linear sections of the associated specimen is illuminated a plurality of times by the light emitting diodes.
Claim 37
Dependent Claim
24 words
The engineered video inspection system of claim 30 wherein the light emitting diodes of the first array are composed of visible light generating devices.
Claim 38
Dependent Claim
44 words
The engineered video inspection system of claim 1 wherein the first array of light emitting diodes includes means for providing one of the plurality of selected wavelength quanta in the visible spectrum and another of the plurality of selected wavelength in the invisible spectrum.
Claim 39
Dependent Claim
19 words
The engineered video inspection system of claim 32 wherein the selected wavelength quanta in the invisible spectrum is infrared.
Claim 40
Dependent Claim
19 words
The engineered video inspection system of claim 32 wherein the selected wavelength quanta in the invisible spectrum is ultraviolet.
Claim 41
Dependent Claim
51 words
The engineered video inspection system of claim 32 further comprising video receptor means adapted to receiving the inspection light after exposure thereof to the associated specimen, the video receptor means including isolation means for segregating the first and second wavelength quanta of the inspection light into first and second images, respectively.
Claim 42
Dependent Claim
30 words
The engineered video inspection system of claim 1 wherein the first array of light emitting diodes includes means for providing the plurality of selected wavelength quanta in the invisible spectrum.
Claim 43
Dependent Claim
19 words
The engineered video inspection system of claim 36 wherein the selected wavelength quanta in the invisible spectrum is infrared.
Claim 44
Dependent Claim
19 words
The engineered video inspection system of claim 36 wherein the selected wavelength quanta in the invisible spectrum is ultraviolet.
Claim 45
Dependent Claim
51 words
The engineered video inspection system of claim 36 further comprising video receptor means adapted to receiving the inspection light after exposure thereof to the associated specimen, the video receptor means including isolation means for segregating the first and second wavelength quanta of the inspection light into first and second images, respectively.
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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) | 1997-11-14 | 1998-05-16 | 1998-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-14 | 2002-05-16 | 2002-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-14 | 2006-05-16 | 2006-11-15 | $7700.00 | Window Closed / Lapsed |