SE9000937D0 - DEVICE FOR DETERMINATION OF FIBER ORIENTATION - Google Patents

DEVICE FOR DETERMINATION OF FIBER ORIENTATION

Info

Publication number
SE9000937D0
SE9000937D0 SE9000937A SE9000937A SE9000937D0 SE 9000937 D0 SE9000937 D0 SE 9000937D0 SE 9000937 A SE9000937 A SE 9000937A SE 9000937 A SE9000937 A SE 9000937A SE 9000937 D0 SE9000937 D0 SE 9000937D0
Authority
SE
Sweden
Prior art keywords
web
light
spot
array
focusing
Prior art date
Application number
SE9000937A
Other languages
Swedish (sv)
Other versions
SE9000937L (en
Inventor
N Karasikov
Original Assignee
Galai Lab Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Galai Lab Ltd filed Critical Galai Lab Ltd
Publication of SE9000937D0 publication Critical patent/SE9000937D0/en
Publication of SE9000937L publication Critical patent/SE9000937L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details
    • G01N21/8903—Optical details; Scanning details using a multiple detector array
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets
    • G01N2021/8663—Paper, e.g. gloss, moisture content
    • G01N2021/8681—Paper fibre orientation

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

: The invention relates to a system for determining fiber orientation in a stationary or moving web of fibers. It comprises a light source, means for focusing a small light spot onto the surface of the web resulting in an ellipse-shaped spot on the opposite surface of said web, an array of light-sensitive elements positioned on the other side of the web, parallel and at a predetermined distance therefrom, means for focusing the elliptical light-spot onto said array, and means for evaluating the said image on said array as to size, orientation and aspect ratio of the ellipse. The invention further provides a method for the determination of fiber orientation in fiber webs, which comprises focusing a spot of light onto the surface of such web, focusing the image formed to the other side of the web, which image is generally elliptical, onto an array of light-sensitive elements and evaluating the important parameters of said elliptical light spot.
SE9000937A 1989-03-17 1990-03-16 DEVICE FOR DETERMINATION OF FIBER ORIENTATION SE9000937L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL89650A IL89650A (en) 1989-03-17 1989-03-17 Measurement of fiber orientation

Publications (2)

Publication Number Publication Date
SE9000937D0 true SE9000937D0 (en) 1990-03-16
SE9000937L SE9000937L (en) 1990-09-18

Family

ID=11059796

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000937A SE9000937L (en) 1989-03-17 1990-03-16 DEVICE FOR DETERMINATION OF FIBER ORIENTATION

Country Status (4)

Country Link
CA (1) CA2012351A1 (en)
DE (1) DE4008366A1 (en)
IL (1) IL89650A (en)
SE (1) SE9000937L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7695592B2 (en) 2005-04-21 2010-04-13 Honeywell International Inc. Method and apparatus for measuring fiber orientation of a moving web
US7164145B2 (en) * 2005-05-12 2007-01-16 Honeywell International Inc. Measuring fiber orientation by detecting dispersion of polarized light
DE102005025009A1 (en) * 2005-05-29 2006-11-30 Massen Machine Vision Systems Gmbh Characterization and quality control of at least partially optically translucent and internally optically scattering products
US7545971B2 (en) 2005-08-22 2009-06-09 Honeywell International Inc. Method and apparatus for measuring the crepe of a moving sheet
CN107991065B (en) * 2017-11-30 2020-05-19 福建福光股份有限公司 Detection device and detection method for return path difference of motorized zoom lens
CN112444213B (en) * 2020-11-12 2021-09-24 大连理工大学 Method for improving precision of semiconductor laser micro-angle measurement system

Also Published As

Publication number Publication date
SE9000937L (en) 1990-09-18
IL89650A (en) 1991-06-30
IL89650A0 (en) 1989-09-28
DE4008366A1 (en) 1990-09-20
CA2012351A1 (en) 1990-09-17

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