JPS55154813A - Laser trimming unit - Google Patents

Laser trimming unit

Info

Publication number
JPS55154813A
JPS55154813A JP6149579A JP6149579A JPS55154813A JP S55154813 A JPS55154813 A JP S55154813A JP 6149579 A JP6149579 A JP 6149579A JP 6149579 A JP6149579 A JP 6149579A JP S55154813 A JPS55154813 A JP S55154813A
Authority
JP
Japan
Prior art keywords
point
crystal vibrator
scan
laser beam
oscillation frequency
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
JP6149579A
Other languages
Japanese (ja)
Inventor
Toshio Omori
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP6149579A priority Critical patent/JPS55154813A/en
Publication of JPS55154813A publication Critical patent/JPS55154813A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To shorten the time of work greatly by grasping a trimming position with accuracy by detecting the variation start position of the oscillation frequency of a crystal vibrator when the oscillation frequency of the crystal vibrator is adjusted by irradiating the crystal vibrator with a laser beam. CONSTITUTION:Crystal vibrator 1 is placed at a work position and the initial irradiation position of a laser beam is set at point 11. Next, the laser beam is made to scan from point 11 to point 12 linearly and when there is no variation in oscillation frequency between both the points, the scan is advanced from point 12 to point 13. Thus, when a change in frequency is obtained at point 20, the Y coordinate of point 20, namely, that of coarse-adjusting thin film 2 is stored and at the same time, the start Y coordinate of fine-adjusting thin film 3 is calculated by CPU in terms of only DELTAY. Next, the scan is taken from point 22 to point 31, and consequently coordinates of thin films 2 and 3 can be found. As a result, the time of work can remarkably be shortened by finding a trimming position with accuracy.
JP6149579A 1979-05-21 1979-05-21 Laser trimming unit Pending JPS55154813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6149579A JPS55154813A (en) 1979-05-21 1979-05-21 Laser trimming unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6149579A JPS55154813A (en) 1979-05-21 1979-05-21 Laser trimming unit

Publications (1)

Publication Number Publication Date
JPS55154813A true JPS55154813A (en) 1980-12-02

Family

ID=13172726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6149579A Pending JPS55154813A (en) 1979-05-21 1979-05-21 Laser trimming unit

Country Status (1)

Country Link
JP (1) JPS55154813A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009171553A (en) * 2007-12-21 2009-07-30 Seiko Instruments Inc Piezoelectric oscillator and method of manufacturing the same
US11075611B2 (en) * 2016-10-31 2021-07-27 Daishinku Corporation Frequency adjustment method for piezoelectric resonator device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009171553A (en) * 2007-12-21 2009-07-30 Seiko Instruments Inc Piezoelectric oscillator and method of manufacturing the same
US11075611B2 (en) * 2016-10-31 2021-07-27 Daishinku Corporation Frequency adjustment method for piezoelectric resonator device

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