JPS56166452A - Detecting method for distortion defect of transparent plate - Google Patents

Detecting method for distortion defect of transparent plate

Info

Publication number
JPS56166452A
JPS56166452A JP7033380A JP7033380A JPS56166452A JP S56166452 A JPS56166452 A JP S56166452A JP 7033380 A JP7033380 A JP 7033380A JP 7033380 A JP7033380 A JP 7033380A JP S56166452 A JPS56166452 A JP S56166452A
Authority
JP
Japan
Prior art keywords
light
image
screen
glass
inspected
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.)
Granted
Application number
JP7033380A
Other languages
Japanese (ja)
Other versions
JPS6312250B2 (en
Inventor
Katsumi Kokubu
Masaharu Okafuji
Osayoshi Ichinose
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.)
Nippon Sheet Glass Co Ltd
Original Assignee
Nippon Sheet Glass Co 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 Nippon Sheet Glass Co Ltd filed Critical Nippon Sheet Glass Co Ltd
Priority to JP7033380A priority Critical patent/JPS56166452A/en
Publication of JPS56166452A publication Critical patent/JPS56166452A/en
Publication of JPS6312250B2 publication Critical patent/JPS6312250B2/ja
Granted 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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/958—Inspecting transparent materials or objects, e.g. windscreens

Landscapes

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

Abstract

PURPOSE:To make the sight-through distortion inspection automatic, by projecting the image of the light having passed through an object being inspected on a screen, and electrically processing said transmitted light image. CONSTITUTION:Glass 1 as an object to be inspected moves on conveyor rollers 2. Below the rollers 2, a reflecting mirror 3 is disposed in an inclining position, while above them, a screen 4 is disposed in an inclining position. When the glass 1 moving on the rollers 2 reaches a given position, the light beam L from a light source 5 passes through the glass 1, and the image of said transmitted light is projected on the screen 4. The incident angle phi of the light beam L is more than 30 deg., the length (a) of the light-projected part on the object 1' to be inspected is to be more than 40mm., and the opening angle phi of the light beam is to be within a range of from -15 deg. to +15 deg.. The nozzle 6 jets out air in order to clean the surface of the reflecting mirror 3 at all times. The transmitted light image on the screen 4 is converted into an electrical signal by means of an image pickup apparatus 7 and processed in an apparatus 9 which is controlled by means of a computer 8 and processes the video signal. The result is displayed on a monitor 10.
JP7033380A 1980-05-27 1980-05-27 Detecting method for distortion defect of transparent plate Granted JPS56166452A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7033380A JPS56166452A (en) 1980-05-27 1980-05-27 Detecting method for distortion defect of transparent plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7033380A JPS56166452A (en) 1980-05-27 1980-05-27 Detecting method for distortion defect of transparent plate

Publications (2)

Publication Number Publication Date
JPS56166452A true JPS56166452A (en) 1981-12-21
JPS6312250B2 JPS6312250B2 (en) 1988-03-18

Family

ID=13428385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7033380A Granted JPS56166452A (en) 1980-05-27 1980-05-27 Detecting method for distortion defect of transparent plate

Country Status (1)

Country Link
JP (1) JPS56166452A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2556097A1 (en) * 1983-12-01 1985-06-07 Nippon Sheet Glass Co Ltd APPARATUS FOR SEARCHING FOR DISTORTIONS IN A GLASS PLATE
JPS61162708A (en) * 1985-01-11 1986-07-23 Inax Corp Apparatus for detecting surface flaw of member
JPS62200206A (en) * 1986-02-27 1987-09-03 Toyo Denshi Kk Apparatus for detecting edge of transparent matter
JPS6381202A (en) * 1986-09-24 1988-04-12 Mazda Motor Corp Detection of defective primer coating
JP2020020657A (en) * 2018-07-31 2020-02-06 株式会社リコー Stereo camera device, stereo camera system, and moving object

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100838655B1 (en) * 2006-10-27 2008-06-16 (주)쎄미시스코 Quality tester of glass board and method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2556097A1 (en) * 1983-12-01 1985-06-07 Nippon Sheet Glass Co Ltd APPARATUS FOR SEARCHING FOR DISTORTIONS IN A GLASS PLATE
JPS61162708A (en) * 1985-01-11 1986-07-23 Inax Corp Apparatus for detecting surface flaw of member
JPS62200206A (en) * 1986-02-27 1987-09-03 Toyo Denshi Kk Apparatus for detecting edge of transparent matter
JPS6381202A (en) * 1986-09-24 1988-04-12 Mazda Motor Corp Detection of defective primer coating
JP2020020657A (en) * 2018-07-31 2020-02-06 株式会社リコー Stereo camera device, stereo camera system, and moving object

Also Published As

Publication number Publication date
JPS6312250B2 (en) 1988-03-18

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