JPH0128886B2 - - Google Patents

Info

Publication number
JPH0128886B2
JPH0128886B2 JP56055404A JP5540481A JPH0128886B2 JP H0128886 B2 JPH0128886 B2 JP H0128886B2 JP 56055404 A JP56055404 A JP 56055404A JP 5540481 A JP5540481 A JP 5540481A JP H0128886 B2 JPH0128886 B2 JP H0128886B2
Authority
JP
Japan
Prior art keywords
grating
light source
fixed
condenser lens
light
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
JP56055404A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57169612A (en
Inventor
Takashi Yokokura
Fumitomo Kondo
Tsuneo Sasaki
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.)
Tokyo Optical Co Ltd
Original Assignee
Tokyo Optical 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 Tokyo Optical Co Ltd filed Critical Tokyo Optical Co Ltd
Priority to JP56055404A priority Critical patent/JPS57169612A/ja
Publication of JPS57169612A publication Critical patent/JPS57169612A/ja
Publication of JPH0128886B2 publication Critical patent/JPH0128886B2/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
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
JP56055404A 1981-04-13 1981-04-13 Photoelectric encoder Granted JPS57169612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56055404A JPS57169612A (en) 1981-04-13 1981-04-13 Photoelectric encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56055404A JPS57169612A (en) 1981-04-13 1981-04-13 Photoelectric encoder

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP20054791A Division JPH0743269B2 (ja) 1991-08-09 1991-08-09 光電式エンコーダー

Publications (2)

Publication Number Publication Date
JPS57169612A JPS57169612A (en) 1982-10-19
JPH0128886B2 true JPH0128886B2 (enExample) 1989-06-06

Family

ID=12997594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56055404A Granted JPS57169612A (en) 1981-04-13 1981-04-13 Photoelectric encoder

Country Status (1)

Country Link
JP (1) JPS57169612A (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1144232B (it) * 1981-06-15 1986-10-29 Olivetti & Co Spa Trasduttore ottico
JPS59211822A (ja) * 1983-05-17 1984-11-30 Yokogawa Hokushin Electric Corp 変位変換器
JPS6110519U (ja) * 1984-06-26 1986-01-22 オムロン株式会社 エンコ−ダ
US4672201A (en) * 1985-11-14 1987-06-09 Acu-Rite Incorporated Phase controlled incremental distance measuring system
US4972061A (en) * 1987-12-17 1990-11-20 Duley Walter W Laser surface treatment
JP6159236B2 (ja) * 2013-11-29 2017-07-05 オークマ株式会社 光学式アブソリュートエンコーダ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806071C3 (de) * 1978-02-14 1980-08-14 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Lichtelektrische Langen- oder Winkelmeßeinrichtung
JPS5636014A (en) * 1979-08-31 1981-04-09 Tokyo Seimitsu Co Ltd Detection method

Also Published As

Publication number Publication date
JPS57169612A (en) 1982-10-19

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