JPS56118609A - Measuring method for azimuth angle of magnetic head - Google Patents

Measuring method for azimuth angle of magnetic head

Info

Publication number
JPS56118609A
JPS56118609A JP2254080A JP2254080A JPS56118609A JP S56118609 A JPS56118609 A JP S56118609A JP 2254080 A JP2254080 A JP 2254080A JP 2254080 A JP2254080 A JP 2254080A JP S56118609 A JPS56118609 A JP S56118609A
Authority
JP
Japan
Prior art keywords
magnetic head
reference surface
cylinder
azimuth angle
measured
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
JP2254080A
Other languages
Japanese (ja)
Inventor
Noboru Ito
Kazuo Yokoyama
Masaru Higashioji
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2254080A priority Critical patent/JPS56118609A/en
Publication of JPS56118609A publication Critical patent/JPS56118609A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To highly accurately and readily measure the azimuth angle of a magnetic head by a method wherein an optical reference surface is set with respect to the cylinder reference surface, a light beam is divided into two, which are reflected by the optical reference surface and the side surface of the magnetic head respectively, and the interference fringes are measured. CONSTITUTION:The reference surface 11 of the cylinder 10 of a VTR is attached to an azimuth measuring jig 12 by using screws 13, and the relative positioning between the jig 12 and the cylinder reference surface 11 is performed. The light beam from a light source 17 is made parallel rays by a lens 18 and divided into two by a half mirror 19, which are reflected by a reflecting mirror 20 and the side surface of a magnetic head 14 respectively and made incident on a lens 21 through the half mirror 19 again. By measuring the relative inclination between the cylinder reference surface 11 and the magnetic head 14 according to the interference fringes of both the rays, the azimuth of the magnetic head 14 with respect to the cylinder 10 is measured. Thereby, the azimuth angle is measured highly accurately and readily.
JP2254080A 1980-02-25 1980-02-25 Measuring method for azimuth angle of magnetic head Pending JPS56118609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2254080A JPS56118609A (en) 1980-02-25 1980-02-25 Measuring method for azimuth angle of magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2254080A JPS56118609A (en) 1980-02-25 1980-02-25 Measuring method for azimuth angle of magnetic head

Publications (1)

Publication Number Publication Date
JPS56118609A true JPS56118609A (en) 1981-09-17

Family

ID=12085632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2254080A Pending JPS56118609A (en) 1980-02-25 1980-02-25 Measuring method for azimuth angle of magnetic head

Country Status (1)

Country Link
JP (1) JPS56118609A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602606A (en) * 1983-09-19 1986-07-29 Toyota Jidosha Kabushiki Kaisha Diesel engine exhaust gas recirculation system with greater atmospheric pressure compensation at low engine load
WO1990013000A1 (en) * 1989-04-21 1990-11-01 Hitachi, Ltd. Projection/exposure device and projection/exposure method
FR2702834A1 (en) * 1993-03-16 1994-09-23 Vareille Aime Optical method and device for determining orientations of articles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602606A (en) * 1983-09-19 1986-07-29 Toyota Jidosha Kabushiki Kaisha Diesel engine exhaust gas recirculation system with greater atmospheric pressure compensation at low engine load
WO1990013000A1 (en) * 1989-04-21 1990-11-01 Hitachi, Ltd. Projection/exposure device and projection/exposure method
FR2702834A1 (en) * 1993-03-16 1994-09-23 Vareille Aime Optical method and device for determining orientations of articles

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