JPS57192822A - Photoelectric type displacement detecting device - Google Patents

Photoelectric type displacement detecting device

Info

Publication number
JPS57192822A
JPS57192822A JP7893881A JP7893881A JPS57192822A JP S57192822 A JPS57192822 A JP S57192822A JP 7893881 A JP7893881 A JP 7893881A JP 7893881 A JP7893881 A JP 7893881A JP S57192822 A JPS57192822 A JP S57192822A
Authority
JP
Japan
Prior art keywords
scale
displacement detecting
stripes
reference position
detecting 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.)
Granted
Application number
JP7893881A
Other languages
Japanese (ja)
Other versions
JPS6118123B2 (en
Inventor
Satoshi Omori
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.)
Mitsutoyo Manufacturing Co Ltd
Original Assignee
Mitsutoyo Manufacturing 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 Mitsutoyo Manufacturing Co Ltd filed Critical Mitsutoyo Manufacturing Co Ltd
Priority to JP7893881A priority Critical patent/JPS57192822A/en
Publication of JPS57192822A publication Critical patent/JPS57192822A/en
Publication of JPS6118123B2 publication Critical patent/JPS6118123B2/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
    • G01D5/32—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
    • 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
    • G01D5/36—Forming the light into pulses

Landscapes

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

Abstract

PURPOSE:To obtain accurate reference position, by providing a light source and a first scale and a second scale wherein displacement detecting scale stripes, to which the light is irradiated from the light source and which can form the image by interaction, are formed. CONSTITUTION:The displacement detecting scale stripes 16-1 and 16-2 for obtaining the divided outputs whose phases are different by 90 deg. are formed on the upper part of an index scale 14. The displacement detecting scale stripes 20 are formed on the upper part of a main scale 18. Light receiving elements 24-1 and 24-2 are arranged at the positions on a detecor 30 corresponding to the displacement detecting scale stripes 16-1 and 16-2. Reference position detecting scale stripes 32 is formed at the lower part of the displacement detecting scale stripes 20 of the main scale 18. In this constitution, the accurate reference position can be always obtained regardless of the temperature change and the like.
JP7893881A 1981-05-25 1981-05-25 Photoelectric type displacement detecting device Granted JPS57192822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7893881A JPS57192822A (en) 1981-05-25 1981-05-25 Photoelectric type displacement detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7893881A JPS57192822A (en) 1981-05-25 1981-05-25 Photoelectric type displacement detecting device

Publications (2)

Publication Number Publication Date
JPS57192822A true JPS57192822A (en) 1982-11-27
JPS6118123B2 JPS6118123B2 (en) 1986-05-10

Family

ID=13675816

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7893881A Granted JPS57192822A (en) 1981-05-25 1981-05-25 Photoelectric type displacement detecting device

Country Status (1)

Country Link
JP (1) JPS57192822A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231596A (en) * 1990-04-28 1993-07-27 Matsushita Electric Industrial Co., Ltd. Position detector having a single set detector for absolute codes
JP2010179606A (en) * 2009-02-06 2010-08-19 Ricoh Co Ltd Optical encoder and image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363850U (en) * 1976-10-27 1978-05-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363850U (en) * 1976-10-27 1978-05-30

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5231596A (en) * 1990-04-28 1993-07-27 Matsushita Electric Industrial Co., Ltd. Position detector having a single set detector for absolute codes
JP2010179606A (en) * 2009-02-06 2010-08-19 Ricoh Co Ltd Optical encoder and image forming apparatus

Also Published As

Publication number Publication date
JPS6118123B2 (en) 1986-05-10

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