JPS6126006B2 - - Google Patents

Info

Publication number
JPS6126006B2
JPS6126006B2 JP56075582A JP7558281A JPS6126006B2 JP S6126006 B2 JPS6126006 B2 JP S6126006B2 JP 56075582 A JP56075582 A JP 56075582A JP 7558281 A JP7558281 A JP 7558281A JP S6126006 B2 JPS6126006 B2 JP S6126006B2
Authority
JP
Japan
Prior art keywords
light
lens
scale
half mirror
receives
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.)
Expired
Application number
JP56075582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57190203A (en
Inventor
Hideto Iwaoka
Koji Akyama
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric 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 Yokogawa Hokushin Electric Corp filed Critical Yokogawa Hokushin Electric Corp
Priority to JP56075582A priority Critical patent/JPS57190203A/ja
Publication of JPS57190203A publication Critical patent/JPS57190203A/ja
Publication of JPS6126006B2 publication Critical patent/JPS6126006B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
JP56075582A 1981-05-19 1981-05-19 Device for reading optical scale Granted JPS57190203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56075582A JPS57190203A (en) 1981-05-19 1981-05-19 Device for reading optical scale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56075582A JPS57190203A (en) 1981-05-19 1981-05-19 Device for reading optical scale

Publications (2)

Publication Number Publication Date
JPS57190203A JPS57190203A (en) 1982-11-22
JPS6126006B2 true JPS6126006B2 (enrdf_load_html_response) 1986-06-18

Family

ID=13580322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56075582A Granted JPS57190203A (en) 1981-05-19 1981-05-19 Device for reading optical scale

Country Status (1)

Country Link
JP (1) JPS57190203A (enrdf_load_html_response)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4967072A (en) * 1984-09-05 1990-10-30 Canon Kabushiki Kaisha Interferometric rotating condition detection apparatus
JPS6212814A (ja) * 1985-07-10 1987-01-21 Canon Inc ロ−タリ−エンコ−ダ−

Also Published As

Publication number Publication date
JPS57190203A (en) 1982-11-22

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