Scanning interferometer sensor system
First Claim
1. An on-line scanning sensor system for detecting characteristics of sheet materials by spectrometric methods comprising:
- first carriage means for scanning across a traveling web of sheet of material;
interferometer component means mounted to be carried by the first carriage means, the interferometer component means including means for splitting and recombining a collimated beam of infrared light and for focusing light from the recombined beam onto the traveling web of sheet material; and
detector means for receiving light from the interferometer component means as it scans across the traveling web.
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Abstract
An on-line scanning sensor system includes a mid-infrared spectrophotometric analyzer, such as an interferometer, that can be used on-line in manufacturing environments. More particularly, the on-line scanning sensor system includes a first carriage for scanning motion across a traveling sheet of material; interferometer components that are carried by the first carriage and that includes devices for splitting and recombining infrared light, and for directing a collimated beam of the recombined light onto a traveling web of sheet material. Further, the system includes a detector system for receiving light from the interferometer components during scanning.
47 Citations
17 Claims
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1. An on-line scanning sensor system for detecting characteristics of sheet materials by spectrometric methods comprising:
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first carriage means for scanning across a traveling web of sheet of material; interferometer component means mounted to be carried by the first carriage means, the interferometer component means including means for splitting and recombining a collimated beam of infrared light and for focusing light from the recombined beam onto the traveling web of sheet material; and detector means for receiving light from the interferometer component means as it scans across the traveling web. - View Dependent Claims (2, 3, 4)
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5. An on-line scanning process for detecting characteristics of sheet materials by spectrometric methods comprising the steps of:
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scanning across one surface of a traveling sheet of material with interferometer component means including means for splitting and recombining infrared light; directing the recombined light onto a traveling web of sheet material; detecting light absorbed by the sheet material from the interferometer component means by scanning across the opposite surface of the traveling sheet with a detector means in registration with the interferometer component means; and
spectrometrically analyzing the detected light. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. An on-line scanning process for detecting characteristics of sheet materials by spectrometric methods comprising the steps of:
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scanning across one surface of a traveling sheet of material with interferometer component means including means for splitting and recombining infrared light; directing the recombined light onto a traveling web of sheet material; scanning across the opposite surface of the traveling sheet with a detector means in registration with the interferometer component means; detecting light transmitted though the traveling web of sheet material from the interferometer component means; and spectrometrically analyzing the detected light. - View Dependent Claims (14)
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15. An on-line scanning process for detecting characteristics of sheet materials by spectrometric methods comprising the steps of:
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scanning across one surface of a traveling sheet of material with interferometer component means including means for splitting and recombining infrared light; directing the recombined light onto a traveling web of sheet material; detecting light reflected by the sheet material from the interferometer component means; and spectrometrically analyzing the detected light.
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16. An on-line scanning sensor system for detecting characteristics of sheet materials by spectrometric methods comprising:
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first carriage means for scanning across a traveling web of sheet of material; interferometer component means mounted to be carried by the first carriage means and including means for splitting and recombining a collimated beam of infrared light and for focusing light from the recombined beam onto the traveling web; detector means for receiving light from the interferometer component means as it scans across the traveling web; and second carriage means for carrying the detector means to scan across the traveling web in registration with the interferometer component means. - View Dependent Claims (17)
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Specification