Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Reexamination Certificate
2007-10-23
2010-11-23
Daniels, Matthew J. (Department: 1791)
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
C356S035000, C356S429000
Reexamination Certificate
active
07837833
ABSTRACT:
An apparatus (200) for determining fiber orientation parameters of a sheet of material during a production process includes a polarized radiation generating system (201, 202) operable for providing polarized radiation having a frequency of at least 1×108Hz. The radiation is aligned to be incident on a sheet of material to be characterized (203). A polarimeter (204, 205) is aligned to receive the radiation transmitted by the sheet of material (203). A photodetector (206) is provided for measuring radiation received after polarization processing by the polarimeter. A processor (207) is coupled to the photodetector (206) for calculating Stokes parameters of the moving sheet (203) based upon intensities of the radiation received and determines at least one parameter relating to fiber orientation of the moving sheet based upon the Stokes parameters.
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Duck Graham I.
Haran Frank M.
Jez David R.
Calandra Anthony J
Daniels Matthew J.
Honeywell ASCA Inc.
Jetter & Associates, P.A.
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