JPS57161607A - Measuring device for object size - Google Patents

Measuring device for object size

Info

Publication number
JPS57161607A
JPS57161607A JP4780381A JP4780381A JPS57161607A JP S57161607 A JPS57161607 A JP S57161607A JP 4780381 A JP4780381 A JP 4780381A JP 4780381 A JP4780381 A JP 4780381A JP S57161607 A JPS57161607 A JP S57161607A
Authority
JP
Japan
Prior art keywords
image
measured
light
circuit
measuring device
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
JP4780381A
Other languages
Japanese (ja)
Inventor
Masanobu Sato
Toshiji Kojima
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.)
Anritsu Corp
Original Assignee
Anritsu 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 Anritsu Corp filed Critical Anritsu Corp
Priority to JP4780381A priority Critical patent/JPS57161607A/en
Publication of JPS57161607A publication Critical patent/JPS57161607A/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
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters

Landscapes

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

Abstract

PURPOSE:To provide a size measuring device which has a high resolution, a high precision, and a rapid measuring time, by constituting a device such that two reflecting optical systems are placed appropriately to selectively reflect only a projection image of a given range containing edge parts at opposite ends of an object to be measured to form the image on an image sensor. CONSTITUTION:Light, brought into parallel by a lens 2, is projected to an object 3a to be measured, lights, transmitting in the proximity of the opposite ends of the object 3a to be measured, are selectively reflected by reflection mirrors 11 and 12 to form the image on an image sensor 5 by means of a collecting lens 4. The light image is formed into a picture according to a clock signal from a clock device circuit 13, the output is compared with a slice level, previously set by a comparison circuit 15, via an amplifying circuit 15, and a size is computed by a computing circuit 7 through a monomulti 16 to display the result in an indicator 8. A device is constituted such that only light in a region of D containing each edge of an object with a diameter of 2D is detected and measured, and this causes obtaining of an inexpensive size measuring device which has a high resolution, a high precision, and a quick measuring time.
JP4780381A 1981-03-31 1981-03-31 Measuring device for object size Pending JPS57161607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4780381A JPS57161607A (en) 1981-03-31 1981-03-31 Measuring device for object size

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4780381A JPS57161607A (en) 1981-03-31 1981-03-31 Measuring device for object size

Publications (1)

Publication Number Publication Date
JPS57161607A true JPS57161607A (en) 1982-10-05

Family

ID=12785524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4780381A Pending JPS57161607A (en) 1981-03-31 1981-03-31 Measuring device for object size

Country Status (1)

Country Link
JP (1) JPS57161607A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0328703A (en) * 1989-06-26 1991-02-06 Power Reactor & Nuclear Fuel Dev Corp Method for inspecting fuel assembly
FR2678727A1 (en) * 1991-07-04 1993-01-08 Tabacs & Allumettes Ind CALIBRATION METHOD AND DEVICE, IN PARTICULAR FOR CIGARETTES, USING THE DETERMINATION OF THE INTERCEPTION TIME OF A LASER BEAM.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0328703A (en) * 1989-06-26 1991-02-06 Power Reactor & Nuclear Fuel Dev Corp Method for inspecting fuel assembly
FR2678727A1 (en) * 1991-07-04 1993-01-08 Tabacs & Allumettes Ind CALIBRATION METHOD AND DEVICE, IN PARTICULAR FOR CIGARETTES, USING THE DETERMINATION OF THE INTERCEPTION TIME OF A LASER BEAM.

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