JPS57201810A - Rotation displacement detecting device - Google Patents

Rotation displacement detecting device

Info

Publication number
JPS57201810A
JPS57201810A JP8736981A JP8736981A JPS57201810A JP S57201810 A JPS57201810 A JP S57201810A JP 8736981 A JP8736981 A JP 8736981A JP 8736981 A JP8736981 A JP 8736981A JP S57201810 A JPS57201810 A JP S57201810A
Authority
JP
Japan
Prior art keywords
polarizing film
light
rotation displacement
polarized
films
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
JP8736981A
Other languages
Japanese (ja)
Inventor
Momokichi Abe
Tatsuro Koike
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.)
TOUKIYOU KEISOU KK
Tokyo Keiso Co Ltd
Original Assignee
TOUKIYOU KEISOU KK
Tokyo Keiso 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 TOUKIYOU KEISOU KK, Tokyo Keiso Co Ltd filed Critical TOUKIYOU KEISOU KK
Priority to JP8736981A priority Critical patent/JPS57201810A/en
Publication of JPS57201810A publication Critical patent/JPS57201810A/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
    • G01D5/344—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 polarisation
    • G01D5/345—Polarising encoders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To compensate the temperature characteristic and the secular change of optical constituting elements which give no disturbance to a system to be measured, by using two polarizing films, namely, a movable polarizing film and a fixed polarizing film. CONSTITUTION:Since the light from a light emitting diode 3 is polarized by a movable polarizing film 2 and is polarized furthermore by a fixed polarizing film 5, the quantity of light incident to a photodiode 4 for detection is dependent upon the relative angle between films 2 and 5 and shows a change approximate to a sine curve of period 180 deg.. A part of this curve where the quantity of incident light is changed most linearly for the rotation angle of the film 2, is selected to obtain a voltage approximately proportional to the rotation displacement as a detection voltage V.
JP8736981A 1981-06-05 1981-06-05 Rotation displacement detecting device Pending JPS57201810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8736981A JPS57201810A (en) 1981-06-05 1981-06-05 Rotation displacement detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8736981A JPS57201810A (en) 1981-06-05 1981-06-05 Rotation displacement detecting device

Publications (1)

Publication Number Publication Date
JPS57201810A true JPS57201810A (en) 1982-12-10

Family

ID=13912977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8736981A Pending JPS57201810A (en) 1981-06-05 1981-06-05 Rotation displacement detecting device

Country Status (1)

Country Link
JP (1) JPS57201810A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307314A (en) * 1987-06-09 1988-12-15 Sekisui Jushi Co Ltd Light quantity adjustor for projector
JPH02103416A (en) * 1988-10-12 1990-04-16 Mitsutoyo Corp Photoelectric displacement detector
JPH02103415A (en) * 1988-10-12 1990-04-16 Mitsutoyo Corp Photoelectric displacement detector
JP2017510798A (en) * 2014-03-07 2017-04-13 ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツングＤｒ． Ｊｏｈａｎｎｅｓ Ｈｅｉｄｅｎｈａｉｎ Ｇｅｓｅｌｌｓｃｈａｆｔ Ｍｉｔ Ｂｅｓｃｈｒａｎｋｔｅｒ Ｈａｆｔｕｎｇ Apparatus for measuring vibration amplitude of wire bonder capillaries

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63307314A (en) * 1987-06-09 1988-12-15 Sekisui Jushi Co Ltd Light quantity adjustor for projector
JPH02103416A (en) * 1988-10-12 1990-04-16 Mitsutoyo Corp Photoelectric displacement detector
JPH02103415A (en) * 1988-10-12 1990-04-16 Mitsutoyo Corp Photoelectric displacement detector
JP2017510798A (en) * 2014-03-07 2017-04-13 ドクトル・ヨハネス・ハイデンハイン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツングＤｒ． Ｊｏｈａｎｎｅｓ Ｈｅｉｄｅｎｈａｉｎ Ｇｅｓｅｌｌｓｃｈａｆｔ Ｍｉｔ Ｂｅｓｃｈｒａｎｋｔｅｒ Ｈａｆｔｕｎｇ Apparatus for measuring vibration amplitude of wire bonder capillaries

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