JPS56163407A - Digital type optical length measuring apparatus - Google Patents

Digital type optical length measuring apparatus

Info

Publication number
JPS56163407A
JPS56163407A JP6685880A JP6685880A JPS56163407A JP S56163407 A JPS56163407 A JP S56163407A JP 6685880 A JP6685880 A JP 6685880A JP 6685880 A JP6685880 A JP 6685880A JP S56163407 A JPS56163407 A JP S56163407A
Authority
JP
Japan
Prior art keywords
slits
measuring apparatus
external light
length measuring
type optical
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
JP6685880A
Other languages
Japanese (ja)
Inventor
Minoru Natori
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP6685880A priority Critical patent/JPS56163407A/en
Publication of JPS56163407A publication Critical patent/JPS56163407A/en
Pending 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
    • G01D5/32—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 with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices
    • G01D5/34723—Scale reading or illumination devices involving light-guides

Landscapes

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

Abstract

PURPOSE:To reduce the consumption of the battery through the utilization of the external light instead of a light emission diode. CONSTITUTION:The external light is received through a slit and utilized for measurement. For example, the external light 314 is condensed by condenser lenses 310 and 311, transmitted through optical fibers 308 and 309 and is received by photoelectric element 306 and 307 through a slit on a movable scale 301 as well as through slits 304 and 305 on a fixed scale. The respecitive phases of the slits 304 and 305 are shifted by a quarter of the pitch of the slits 302 on the movable scale 301. Thus, the length of metters can be determined at a precision of one fourth of the pitch of the slits by means of electric signals provided by the photoelectric elements 306 and 307 during the movement of the movable scale 301 together with the measuring head of the length measuring apparatus.
JP6685880A 1980-05-20 1980-05-20 Digital type optical length measuring apparatus Pending JPS56163407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6685880A JPS56163407A (en) 1980-05-20 1980-05-20 Digital type optical length measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6685880A JPS56163407A (en) 1980-05-20 1980-05-20 Digital type optical length measuring apparatus

Publications (1)

Publication Number Publication Date
JPS56163407A true JPS56163407A (en) 1981-12-16

Family

ID=13327964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6685880A Pending JPS56163407A (en) 1980-05-20 1980-05-20 Digital type optical length measuring apparatus

Country Status (1)

Country Link
JP (1) JPS56163407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108895970A (en) * 2018-07-13 2018-11-27 重庆理工大学 A kind of straight-line displacement measuring system based on alternation light field

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108895970A (en) * 2018-07-13 2018-11-27 重庆理工大学 A kind of straight-line displacement measuring system based on alternation light field
CN108895970B (en) * 2018-07-13 2020-07-24 重庆理工大学 Linear displacement measurement system based on alternating light field

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