JPS5483871A - Air curtain nozzle of laser speed meter - Google Patents

Air curtain nozzle of laser speed meter

Info

Publication number
JPS5483871A
JPS5483871A JP15135477A JP15135477A JPS5483871A JP S5483871 A JPS5483871 A JP S5483871A JP 15135477 A JP15135477 A JP 15135477A JP 15135477 A JP15135477 A JP 15135477A JP S5483871 A JPS5483871 A JP S5483871A
Authority
JP
Japan
Prior art keywords
air
vapor
curtain
air curtain
annular
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
JP15135477A
Other languages
Japanese (ja)
Other versions
JPS593703B2 (en
Inventor
Asaji Yonekawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP52151354A priority Critical patent/JPS593703B2/en
Publication of JPS5483871A publication Critical patent/JPS5483871A/en
Publication of JPS593703B2 publication Critical patent/JPS593703B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To scatter the vapor to the outside from the surface of a test piece, upon which the light having passed through an inner air one of dual annular air curtains impinges, by forming the dual annular air curtains so that air may be injected from the helical groove of the outer annular curtain. CONSTITUTION:A lasser is used to measure the moving speed of a steel plate in a non-contact manner. Dual annular air curtains 7 and 25 are formed so that the laser beam 4 from a sensor and the resultant reflected light 5 may pass through the inner air curtain 7. A purge air 7 is blown onto a test piece 6 form the nozzle 1 thus constructed thereby to remove water 8 and vapor 9. The spurting speed of the inner air curtain 7 is made larger than that of the outer air curtain 25 so that the purge air 7 may be prevented from being mixed with the vapor. The outer air curtain 25 is made to be injected air 29 from the annular clearance 27 and to have a vortex component so that the purge air 27 may be prevented from being mixed with the vapor.
JP52151354A 1977-12-16 1977-12-16 air curtain nozzle Expired JPS593703B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52151354A JPS593703B2 (en) 1977-12-16 1977-12-16 air curtain nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52151354A JPS593703B2 (en) 1977-12-16 1977-12-16 air curtain nozzle

Publications (2)

Publication Number Publication Date
JPS5483871A true JPS5483871A (en) 1979-07-04
JPS593703B2 JPS593703B2 (en) 1984-01-25

Family

ID=15516707

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52151354A Expired JPS593703B2 (en) 1977-12-16 1977-12-16 air curtain nozzle

Country Status (1)

Country Link
JP (1) JPS593703B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606124U (en) * 1983-06-25 1985-01-17 株式会社トーキン Dust-proof socket for reflective optical sensor
JPS63150313U (en) * 1987-03-24 1988-10-04
JP2000055785A (en) * 1998-02-16 2000-02-25 Lg Electronics Inc Modulator and electrooptical sensor with the same
JP2006105737A (en) * 2004-10-04 2006-04-20 Yokohama Rubber Co Ltd:The Device for measuring of vehicular speed
JP2006153827A (en) * 2004-11-26 2006-06-15 Metrol Ltd Sensor for adhesion check
JP2015205362A (en) * 2014-04-18 2015-11-19 株式会社ディスコ Laser displacement gauge and grinding device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606124U (en) * 1983-06-25 1985-01-17 株式会社トーキン Dust-proof socket for reflective optical sensor
JPS63150313U (en) * 1987-03-24 1988-10-04
JPH0522811Y2 (en) * 1987-03-24 1993-06-11
JP2000055785A (en) * 1998-02-16 2000-02-25 Lg Electronics Inc Modulator and electrooptical sensor with the same
JP2006105737A (en) * 2004-10-04 2006-04-20 Yokohama Rubber Co Ltd:The Device for measuring of vehicular speed
JP4639739B2 (en) * 2004-10-04 2011-02-23 横浜ゴム株式会社 Vehicle speed measuring device
JP2006153827A (en) * 2004-11-26 2006-06-15 Metrol Ltd Sensor for adhesion check
JP2015205362A (en) * 2014-04-18 2015-11-19 株式会社ディスコ Laser displacement gauge and grinding device

Also Published As

Publication number Publication date
JPS593703B2 (en) 1984-01-25

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