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JPS56160615A - Stroke measuring apparatus - Google Patents

Stroke measuring apparatus

Info

Publication number
JPS56160615A
JPS56160615A JP6376580A JP6376580A JPS56160615A JP S56160615 A JPS56160615 A JP S56160615A JP 6376580 A JP6376580 A JP 6376580A JP 6376580 A JP6376580 A JP 6376580A JP S56160615 A JPS56160615 A JP S56160615A
Authority
JP
Japan
Prior art keywords
light
bar code
slit
fiber
rod lens
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
JP6376580A
Other languages
Japanese (ja)
Other versions
JPS615082B2 (en
Inventor
Makoto Koguchi
Nobuhiko Tsuji
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6376580A priority Critical patent/JPS56160615A/en
Publication of JPS56160615A publication Critical patent/JPS56160615A/en
Publication of JPS615082B2 publication Critical patent/JPS615082B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres

Landscapes

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

Abstract

PURPOSE:To make it possible to enlarge the distance between an optical fiber and a bar code in an apparatus which measures stroke by optically reading the bar code, by providing a rod lens and a slit at the end of a light-receiving fiber. CONSTITUTION:The optical fiber element 20 comprises a light-receiving fiber 6 to be an axial core, a light-projecting fiber 7 surrounding the periphery, a slit plate 22 which is provided to the end surface of the light-receiving fiber 6 and has a slit 21 to restrict the light-receiving area thereof, and a rod lens 24. The light reflected from a bar code is reflacted by means of the rod lens 24, throwing the bar code image on the light going-out surface thereof. Drawing out said image of 1/2 pitch of the bar code through the slit 21 permits the light-quantity change in accordance with the movement of the bar code to be obtained.
JP6376580A 1980-05-14 1980-05-14 Stroke measuring apparatus Granted JPS56160615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6376580A JPS56160615A (en) 1980-05-14 1980-05-14 Stroke measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6376580A JPS56160615A (en) 1980-05-14 1980-05-14 Stroke measuring apparatus

Publications (2)

Publication Number Publication Date
JPS56160615A true JPS56160615A (en) 1981-12-10
JPS615082B2 JPS615082B2 (en) 1986-02-15

Family

ID=13238795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6376580A Granted JPS56160615A (en) 1980-05-14 1980-05-14 Stroke measuring apparatus

Country Status (1)

Country Link
JP (1) JPS56160615A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5828615A (en) * 1981-08-14 1983-02-19 Hitachi Ltd Measuring device for extent of shift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5828615A (en) * 1981-08-14 1983-02-19 Hitachi Ltd Measuring device for extent of shift

Also Published As

Publication number Publication date
JPS615082B2 (en) 1986-02-15

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