JPS55131756A - Defect detector - Google Patents

Defect detector

Info

Publication number
JPS55131756A
JPS55131756A JP3954979A JP3954979A JPS55131756A JP S55131756 A JPS55131756 A JP S55131756A JP 3954979 A JP3954979 A JP 3954979A JP 3954979 A JP3954979 A JP 3954979A JP S55131756 A JPS55131756 A JP S55131756A
Authority
JP
Japan
Prior art keywords
defect
sensers
optical
senser
theta
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
JP3954979A
Other languages
Japanese (ja)
Inventor
Nobuhiko Tsuji
Yoshio Sugiyama
Mamoru Shiratori
Nobuo Hashimoto
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.)
Fuji Electric Co Ltd
Sankyo Co Ltd
Original Assignee
Fuji Electric Co Ltd
Sankyo 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 Fuji Electric Co Ltd, Sankyo Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP3954979A priority Critical patent/JPS55131756A/en
Publication of JPS55131756A publication Critical patent/JPS55131756A/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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/9508—Capsules; Tablets

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 make it possible to detect more accurately any defect on a curved surface of a body such as a capsule whose both ends are of a spheroidal shape by providing optical sensers each having a luminous source and a light receiving element, at least two pieces forming a set, at both ends of a body to be examined in an inclined manner. CONSTITUTION:Optical sensers 5 and 6 in each of which a luminous source is embedded and a filter is provided in the front of a light receiving element, are arranged in a confronting manner at angles of -theta and +theta to a capsule 4 carried in the direction shown by arrow. In this case, the output signal of the senser 5 detects the defect of a black point (e) or a local thin spot, and that of the senser 6 detects the defect of a black point (d). The reflected light outputs received by these optical sensers are converted into electrical signals by predetermined circuits, and compared with a suitable threshold value level and converted into binary signals, by which the defect is determined. By this organization, it is possible to accurately detect the defect of a physical body whose both ends form curved surfaces.
JP3954979A 1979-04-02 1979-04-02 Defect detector Pending JPS55131756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3954979A JPS55131756A (en) 1979-04-02 1979-04-02 Defect detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3954979A JPS55131756A (en) 1979-04-02 1979-04-02 Defect detector

Publications (1)

Publication Number Publication Date
JPS55131756A true JPS55131756A (en) 1980-10-13

Family

ID=12556129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3954979A Pending JPS55131756A (en) 1979-04-02 1979-04-02 Defect detector

Country Status (1)

Country Link
JP (1) JPS55131756A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109850A (en) * 1981-12-24 1983-06-30 Satake Eng Co Ltd Detector of broken grain of rice
CN105139027A (en) * 2015-08-05 2015-12-09 北京天诚盛业科技有限公司 Capsule head defect detection method and apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843359A (en) * 1971-09-27 1973-06-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843359A (en) * 1971-09-27 1973-06-22

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58109850A (en) * 1981-12-24 1983-06-30 Satake Eng Co Ltd Detector of broken grain of rice
CN105139027A (en) * 2015-08-05 2015-12-09 北京天诚盛业科技有限公司 Capsule head defect detection method and apparatus
CN105139027B (en) * 2015-08-05 2019-07-05 北京眼神智能科技有限公司 Capsule head defect inspection method and device

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