JPS5793240A - Light transmitting type checking device - Google Patents

Light transmitting type checking device

Info

Publication number
JPS5793240A
JPS5793240A JP17234780A JP17234780A JPS5793240A JP S5793240 A JPS5793240 A JP S5793240A JP 17234780 A JP17234780 A JP 17234780A JP 17234780 A JP17234780 A JP 17234780A JP S5793240 A JPS5793240 A JP S5793240A
Authority
JP
Japan
Prior art keywords
light
scanning
photocell
fiber
converged
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP17234780A
Other languages
Japanese (ja)
Inventor
Motoo Igari
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP17234780A priority Critical patent/JPS5793240A/en
Publication of JPS5793240A publication Critical patent/JPS5793240A/en
Pending legal-status Critical Current

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
    • 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
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/896—Optical defects in or on transparent materials, e.g. distortion, surface flaws in conveyed flat sheet or rod

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)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To protect a photocell from direct light by providing a light shielding member in a light irradiated region on the surface of lenses which converge the transmitted and diffused light through an object to be checked. CONSTITUTION:Light 3 is irradiated from a light source 3 in a spot shape, with a sheet shaped, semi-transparent, wooden plate 1 being conveyed. Said light 3 is reflected by a scanning mirror 4 which is moved with a vertical shaft as a supporting point and the reflected light scans the single wooden plate 1 in the width direction. The transmitted light is converged into a converging fiber 6 by a pair of cylindrical lenses 5, and converted into an electrical current by the photocell 7 arranged under the fiber 6. Cracks and the like are detected by the strength of said light current. In the meantime, the light shielding member 10 is attached to the region corresponding to the scanning beam of the scanning light 8 from the scanning mirror 4 on the surface of the cylindrical lenses 5. Since the scanning light 8 is not converged into the light converging fiber 6, the damage of the photocell 7 can be prevented.
JP17234780A 1980-11-29 1980-11-29 Light transmitting type checking device Pending JPS5793240A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17234780A JPS5793240A (en) 1980-11-29 1980-11-29 Light transmitting type checking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17234780A JPS5793240A (en) 1980-11-29 1980-11-29 Light transmitting type checking device

Publications (1)

Publication Number Publication Date
JPS5793240A true JPS5793240A (en) 1982-06-10

Family

ID=15940216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17234780A Pending JPS5793240A (en) 1980-11-29 1980-11-29 Light transmitting type checking device

Country Status (1)

Country Link
JP (1) JPS5793240A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62223647A (en) * 1986-03-26 1987-10-01 Hitachi Ltd Foreign matter monitor
US7240966B2 (en) 2002-09-05 2007-07-10 A-Dec, Inc. Headrest support and adjustment mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62223647A (en) * 1986-03-26 1987-10-01 Hitachi Ltd Foreign matter monitor
US7240966B2 (en) 2002-09-05 2007-07-10 A-Dec, Inc. Headrest support and adjustment mechanism

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