JPS5462885A - Flaw inspector of semi-transparent objects - Google Patents

Flaw inspector of semi-transparent objects

Info

Publication number
JPS5462885A
JPS5462885A JP12993377A JP12993377A JPS5462885A JP S5462885 A JPS5462885 A JP S5462885A JP 12993377 A JP12993377 A JP 12993377A JP 12993377 A JP12993377 A JP 12993377A JP S5462885 A JPS5462885 A JP S5462885A
Authority
JP
Japan
Prior art keywords
flaw
signal
infrared ray
ray light
television camera
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
JP12993377A
Other languages
Japanese (ja)
Inventor
Yoshioki Tanmachi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12993377A priority Critical patent/JPS5462885A/en
Publication of JPS5462885A publication Critical patent/JPS5462885A/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
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents

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

Abstract

PURPOSE:To distinctly detect the flaw in a colored semitransparent object with the converted electric signal by taking the flaw with a television camera through transmission of the infrared ray light of even brightness. CONSTITUTION:A screen 2 being a secondary light source having even brightness through perfect diffusion is disposed near a light source 1 which emits infrared ray light. The object to be examined 3 being a colored semi-transparent bottle is disposed near the screen 2. A filter 4 which allows transmission of only the infrared rays is mounted and the infrared ray light having transmitted through the bottle is taken with a television camera which has a sensitivity to infrared rays. If there is a flaw 3a in the object to be examined 3, the infrared ray light is cut off, becoming a dark shadow. This shadow is picked up by the television camera and becomes the output waveform including the flaw signal which is then sent to a slicing circuit 6. The slicing circuit 6 removes the television synchronizing signal from this waveform and draws out only the flaw signal. This signal causes a monostable multi circuit 7 to drive a relay 8 for detection signal, closing contacts 9 then from output terminal 9a, the flaw signal is emitted.
JP12993377A 1977-10-28 1977-10-28 Flaw inspector of semi-transparent objects Pending JPS5462885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12993377A JPS5462885A (en) 1977-10-28 1977-10-28 Flaw inspector of semi-transparent objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12993377A JPS5462885A (en) 1977-10-28 1977-10-28 Flaw inspector of semi-transparent objects

Publications (1)

Publication Number Publication Date
JPS5462885A true JPS5462885A (en) 1979-05-21

Family

ID=15022004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12993377A Pending JPS5462885A (en) 1977-10-28 1977-10-28 Flaw inspector of semi-transparent objects

Country Status (1)

Country Link
JP (1) JPS5462885A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0469556A (en) * 1990-07-09 1992-03-04 Toyo Glass Co Ltd Defect inspecting method for glass container
WO2002025251A2 (en) * 2000-09-19 2002-03-28 Eastman Chemical Company Device and method for the optical inspection, assessment, and control of colored plastic articles and/or container contents
US6993176B2 (en) 2000-02-03 2006-01-31 Suntory Limited Method and device for imaging liquid-filled container

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0469556A (en) * 1990-07-09 1992-03-04 Toyo Glass Co Ltd Defect inspecting method for glass container
US6993176B2 (en) 2000-02-03 2006-01-31 Suntory Limited Method and device for imaging liquid-filled container
WO2002025251A2 (en) * 2000-09-19 2002-03-28 Eastman Chemical Company Device and method for the optical inspection, assessment, and control of colored plastic articles and/or container contents
WO2002025251A3 (en) * 2000-09-19 2002-06-27 Eastman Chem Co Device and method for the optical inspection, assessment, and control of colored plastic articles and/or container contents

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