JPS56125605A - Method and apparatus for detection of shape of striplike body - Google Patents

Method and apparatus for detection of shape of striplike body

Info

Publication number
JPS56125605A
JPS56125605A JP2897580A JP2897580A JPS56125605A JP S56125605 A JPS56125605 A JP S56125605A JP 2897580 A JP2897580 A JP 2897580A JP 2897580 A JP2897580 A JP 2897580A JP S56125605 A JPS56125605 A JP S56125605A
Authority
JP
Japan
Prior art keywords
laser light
shape
striplike
optical axis
detecting
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
JP2897580A
Other languages
Japanese (ja)
Other versions
JPS6039962B2 (en
Inventor
Akinobu Ogasawara
Toshiro Matsubara
Satoru Nakamura
Michiyasu Kikukawa
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 Steel Corp
Original Assignee
Nippon Steel Corp
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 Steel Corp filed Critical Nippon Steel Corp
Priority to JP2897580A priority Critical patent/JPS6039962B2/en
Publication of JPS56125605A publication Critical patent/JPS56125605A/en
Publication of JPS6039962B2 publication Critical patent/JPS6039962B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures

Abstract

PURPOSE:To detect the shape of a striplike body continuously and highly accurately by detecting the parallel scanning laser light reflected from the surface of the striplike body and detecting the shape from the detected signal thereof and a scanning reference signal. CONSTITUTION:Laser light 2 passes through a condensing lens 4, is scanned to a sector shape 6 by a rotary mirror 5 and enters a parabolic mirror 7. The laser light reflected from the paralbolic surface is now nearly perfect parallel laser light 8 which irradiates a striplike body 9. When the parallel scanning laser light 8 arrives at the point of intersection of the body 9 and an optical axis 15, the laser light reflected from the surface of the body 9 is detected with a photodetector 14. Based on the time difference of the detection signal 16 thereof and the scanning reference signal 20 of the photodetector 14 having beforehand been set when the body 9 is not displaced in the optical axis 15 direction, the displacement of the body 9 in the optical axis 15 direction is measured in a displacement conversion circuit 17. This output is inputted to a display device 23 via a disturbance signal removing circuit 21 and a shape detecting circuit 22.
JP2897580A 1980-03-07 1980-03-07 Band shape detection method and device Expired JPS6039962B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2897580A JPS6039962B2 (en) 1980-03-07 1980-03-07 Band shape detection method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2897580A JPS6039962B2 (en) 1980-03-07 1980-03-07 Band shape detection method and device

Publications (2)

Publication Number Publication Date
JPS56125605A true JPS56125605A (en) 1981-10-02
JPS6039962B2 JPS6039962B2 (en) 1985-09-09

Family

ID=12263415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2897580A Expired JPS6039962B2 (en) 1980-03-07 1980-03-07 Band shape detection method and device

Country Status (1)

Country Link
JP (1) JPS6039962B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092018A (en) * 1983-10-25 1985-05-23 Mitsubishi Heavy Ind Ltd Method and apparatus for detecting annular wire rod
JPS6154212U (en) * 1984-09-13 1986-04-11

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6092018A (en) * 1983-10-25 1985-05-23 Mitsubishi Heavy Ind Ltd Method and apparatus for detecting annular wire rod
JPS6154212U (en) * 1984-09-13 1986-04-11
JPH0338647Y2 (en) * 1984-09-13 1991-08-15

Also Published As

Publication number Publication date
JPS6039962B2 (en) 1985-09-09

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