JPS57504A - Length measuring machine - Google Patents

Length measuring machine

Info

Publication number
JPS57504A
JPS57504A JP7460180A JP7460180A JPS57504A JP S57504 A JPS57504 A JP S57504A JP 7460180 A JP7460180 A JP 7460180A JP 7460180 A JP7460180 A JP 7460180A JP S57504 A JPS57504 A JP S57504A
Authority
JP
Japan
Prior art keywords
light
measured
measure
length
light beam
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
JP7460180A
Other languages
Japanese (ja)
Inventor
Shinji Okamoto
Yoshimasa Fujiwara
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7460180A priority Critical patent/JPS57504A/en
Publication of JPS57504A publication Critical patent/JPS57504A/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

Landscapes

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

Abstract

PURPOSE:To measure a variation in length to a reference value to simplify a positioning mechanism and to make easy to operate by projecting a light only to both edge parts of an object to be measured using an optical system that is inverted and changes the direction. CONSTITUTION:A light P of light beams P, Q at both ends of a line beam emitted from a projector 1 is shielded partly at an edge part 7a of one side of a material 7 to be measured, and is received at a light receiving part 2 as a light beam P. Further, the light beam Q is reflected by an optical system 3 and is shielded at an edge part 7b of the other side of the material 7 to be measured to produce a light beam q, and a line light beam having a width specified by light beams p, q is received with the light receiving device 2 to determine the width of the light flux. It is possible to measure a length by setting a reference length lo of the material 7 to be measured to measure the amount of the variation.
JP7460180A 1980-05-31 1980-05-31 Length measuring machine Pending JPS57504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7460180A JPS57504A (en) 1980-05-31 1980-05-31 Length measuring machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7460180A JPS57504A (en) 1980-05-31 1980-05-31 Length measuring machine

Publications (1)

Publication Number Publication Date
JPS57504A true JPS57504A (en) 1982-01-05

Family

ID=13551835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7460180A Pending JPS57504A (en) 1980-05-31 1980-05-31 Length measuring machine

Country Status (1)

Country Link
JP (1) JPS57504A (en)

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