JPS6165165A - 回転情報検出計 - Google Patents

回転情報検出計

Info

Publication number
JPS6165165A
JPS6165165A JP18617084A JP18617084A JPS6165165A JP S6165165 A JPS6165165 A JP S6165165A JP 18617084 A JP18617084 A JP 18617084A JP 18617084 A JP18617084 A JP 18617084A JP S6165165 A JPS6165165 A JP S6165165A
Authority
JP
Japan
Prior art keywords
light
radiation grating
grating
radiation
diffracted
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
JP18617084A
Other languages
English (en)
Japanese (ja)
Other versions
JPH045142B2 (en]
Inventor
Tetsuji Nishimura
西村　哲治
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP18617084A priority Critical patent/JPS6165165A/ja
Publication of JPS6165165A publication Critical patent/JPS6165165A/ja
Priority to US07/481,684 priority patent/US4967072A/en
Publication of JPH045142B2 publication Critical patent/JPH045142B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/366—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light by using diffraction of light
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
JP18617084A 1984-09-05 1984-09-05 回転情報検出計 Granted JPS6165165A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18617084A JPS6165165A (ja) 1984-09-05 1984-09-05 回転情報検出計
US07/481,684 US4967072A (en) 1984-09-05 1990-02-20 Interferometric rotating condition detection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18617084A JPS6165165A (ja) 1984-09-05 1984-09-05 回転情報検出計

Publications (2)

Publication Number Publication Date
JPS6165165A true JPS6165165A (ja) 1986-04-03
JPH045142B2 JPH045142B2 (en]) 1992-01-30

Family

ID=16183615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18617084A Granted JPS6165165A (ja) 1984-09-05 1984-09-05 回転情報検出計

Country Status (1)

Country Link
JP (1) JPS6165165A (en])

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930895A (en) * 1987-06-15 1990-06-05 Canon Kabushiki Kaisha Encoder for forming interference fringes by re-diffracted lights from an optical type scale and photoelectrically converting the interference fringes to thereby detect the displacement of the scale
JP2005227077A (ja) * 2004-02-12 2005-08-25 Sharp Corp 光学式移動情報検出装置および移動情報検出システムおよび電子機器およびエンコーダ

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6409242B1 (en) 2000-11-14 2002-06-25 Chung L. Chang Flat thin screen T/V monitor automotive roof mount
US6871356B2 (en) 2002-10-28 2005-03-22 Johnson Safety, Inc. Mobile video system
US7762627B2 (en) 2005-11-02 2010-07-27 Chung Lung Chang Headrest-mounted entertainment systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930895A (en) * 1987-06-15 1990-06-05 Canon Kabushiki Kaisha Encoder for forming interference fringes by re-diffracted lights from an optical type scale and photoelectrically converting the interference fringes to thereby detect the displacement of the scale
JP2005227077A (ja) * 2004-02-12 2005-08-25 Sharp Corp 光学式移動情報検出装置および移動情報検出システムおよび電子機器およびエンコーダ

Also Published As

Publication number Publication date
JPH045142B2 (en]) 1992-01-30

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term