JPS57108685A - Detector for sheet-like transparent parts - Google Patents

Detector for sheet-like transparent parts

Info

Publication number
JPS57108685A
JPS57108685A JP55184348A JP18434880A JPS57108685A JP S57108685 A JPS57108685 A JP S57108685A JP 55184348 A JP55184348 A JP 55184348A JP 18434880 A JP18434880 A JP 18434880A JP S57108685 A JPS57108685 A JP S57108685A
Authority
JP
Japan
Prior art keywords
light emitting
detector
light
emitting element
parts
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
JP55184348A
Other languages
Japanese (ja)
Inventor
Toru Tomine
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP55184348A priority Critical patent/JPS57108685A/en
Publication of JPS57108685A publication Critical patent/JPS57108685A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

PURPOSE:To improve the workability free from stains and flaws of parts by means of light emitting elements and light detectors so arranged that they fail to operate while a transparent part is not located between lights projected and collect light from the part when located between the lights. CONSTITUTION:This detector comprises a guide section 1 for conveying parts, a light emitting element 2, a photo detector 3 and the like and the mounting heights of the light emitting element and photo detector are set at about 1/2 the thickness of the parts. In this arrangement, when the operating voltage of the light detector 3 is set at such a value it fails to detect even if receiving light emitting from the light emitting element 2 while no part is located at the detector on a guide section 1, no detection is performed unless the part 5 passes the detection position. On the other hand, when a part 5 passes lights projected between the light emitting element 2 and the photo detector 3, an incidence light is totally reflected on the top and bottom surfaces of the part 5 thereby enabling detection with a high workability free from stains, flaws and the like.
JP55184348A 1980-12-25 1980-12-25 Detector for sheet-like transparent parts Pending JPS57108685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184348A JPS57108685A (en) 1980-12-25 1980-12-25 Detector for sheet-like transparent parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184348A JPS57108685A (en) 1980-12-25 1980-12-25 Detector for sheet-like transparent parts

Publications (1)

Publication Number Publication Date
JPS57108685A true JPS57108685A (en) 1982-07-06

Family

ID=16151690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184348A Pending JPS57108685A (en) 1980-12-25 1980-12-25 Detector for sheet-like transparent parts

Country Status (1)

Country Link
JP (1) JPS57108685A (en)

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