JPS56137103A - Range finder - Google Patents

Range finder

Info

Publication number
JPS56137103A
JPS56137103A JP4060880A JP4060880A JPS56137103A JP S56137103 A JPS56137103 A JP S56137103A JP 4060880 A JP4060880 A JP 4060880A JP 4060880 A JP4060880 A JP 4060880A JP S56137103 A JPS56137103 A JP S56137103A
Authority
JP
Japan
Prior art keywords
steel piece
side face
prism
laser beam
laser
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
JP4060880A
Other languages
Japanese (ja)
Inventor
Yasuo Oda
Takeshi Mori
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP4060880A priority Critical patent/JPS56137103A/en
Publication of JPS56137103A publication Critical patent/JPS56137103A/en
Pending 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE:To make high-precision measurement possible to improve the steel piece yield, by constituting the range finder so that the condition that the projection angle for the object to be measured is constant is satisfied in scanning of the light beam. CONSTITUTION:Gas laser 2 is installed just above total reflective prism 1 which is arranged in the side of steel piece SP and is a reflective material. The laser beam generated from laser 2 is incident to the horizontal face of prism 1 perpendicularly and is reflected horizontally by the reflection surface and is projected to the opposite side face of steel piece SPO when the horizontal position of prism is changed by driving of step motor 5, the region of laser beam projection on the side face of steel piece SP is changed vertically. That is, the laser beam is scanned vertically on the side face of steel piece SP. Image sensor 4 is provided off to the upper position of condenser lens 3 to receive the reflection beam fromsteel piece SP. Step motor 5 is driven regularly, and the average distance to the side face of steel piece SP is obtained on a basis of data from sensor 4 and displacement meter 6 obtained during this regular driving.
JP4060880A 1980-03-28 1980-03-28 Range finder Pending JPS56137103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4060880A JPS56137103A (en) 1980-03-28 1980-03-28 Range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4060880A JPS56137103A (en) 1980-03-28 1980-03-28 Range finder

Publications (1)

Publication Number Publication Date
JPS56137103A true JPS56137103A (en) 1981-10-26

Family

ID=12585228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4060880A Pending JPS56137103A (en) 1980-03-28 1980-03-28 Range finder

Country Status (1)

Country Link
JP (1) JPS56137103A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61218902A (en) * 1985-03-26 1986-09-29 Toshiba Corp Position measuring method
US5550628A (en) * 1982-05-20 1996-08-27 Canon Kabushiki Kaisha Distance measuring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5550628A (en) * 1982-05-20 1996-08-27 Canon Kabushiki Kaisha Distance measuring device
US6084658A (en) * 1982-05-20 2000-07-04 Canon Kabushiki Kaisha Distance measuring apparatus
JPS61218902A (en) * 1985-03-26 1986-09-29 Toshiba Corp Position measuring method

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