JPS59102104A - 光学式定点位置決め方法 - Google Patents

光学式定点位置決め方法

Info

Publication number
JPS59102104A
JPS59102104A JP21143582A JP21143582A JPS59102104A JP S59102104 A JPS59102104 A JP S59102104A JP 21143582 A JP21143582 A JP 21143582A JP 21143582 A JP21143582 A JP 21143582A JP S59102104 A JPS59102104 A JP S59102104A
Authority
JP
Japan
Prior art keywords
scale
mask
pattern
fixed point
movable scale
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
JP21143582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6341481B2 (enExample
Inventor
Eiichi Tsukada
塚田　栄一
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP21143582A priority Critical patent/JPS59102104A/ja
Publication of JPS59102104A publication Critical patent/JPS59102104A/ja
Publication of JPS6341481B2 publication Critical patent/JPS6341481B2/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
    • G01D5/36—Forming the light into pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Position Or Direction (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
JP21143582A 1982-12-03 1982-12-03 光学式定点位置決め方法 Granted JPS59102104A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21143582A JPS59102104A (ja) 1982-12-03 1982-12-03 光学式定点位置決め方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21143582A JPS59102104A (ja) 1982-12-03 1982-12-03 光学式定点位置決め方法

Publications (2)

Publication Number Publication Date
JPS59102104A true JPS59102104A (ja) 1984-06-13
JPS6341481B2 JPS6341481B2 (enExample) 1988-08-17

Family

ID=16605899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21143582A Granted JPS59102104A (ja) 1982-12-03 1982-12-03 光学式定点位置決め方法

Country Status (1)

Country Link
JP (1) JPS59102104A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61292016A (ja) * 1985-06-19 1986-12-22 Yokogawa Hewlett Packard Ltd 光学式位置エンコ−ダ
JPS62200223A (ja) * 1986-02-27 1987-09-03 Canon Inc エンコ−ダ−

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08276371A (ja) * 1995-04-06 1996-10-22 Flash Seiki Kk 回転工具用ソケット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61292016A (ja) * 1985-06-19 1986-12-22 Yokogawa Hewlett Packard Ltd 光学式位置エンコ−ダ
JPS62200223A (ja) * 1986-02-27 1987-09-03 Canon Inc エンコ−ダ−

Also Published As

Publication number Publication date
JPS6341481B2 (enExample) 1988-08-17

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