GB1446806A - Method and apparatus for tuning the natural frequency of an oscillating body formed of a piezoelectric crystal - Google Patents

Method and apparatus for tuning the natural frequency of an oscillating body formed of a piezoelectric crystal

Info

Publication number
GB1446806A
GB1446806A GB1615174A GB1615174A GB1446806A GB 1446806 A GB1446806 A GB 1446806A GB 1615174 A GB1615174 A GB 1615174A GB 1615174 A GB1615174 A GB 1615174A GB 1446806 A GB1446806 A GB 1446806A
Authority
GB
United Kingdom
Prior art keywords
tuned
crystal
natural frequency
piezoelectric crystal
april
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.)
Expired
Application number
GB1615174A
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.)
Lasag AG
Oscilloquartz SA
Original Assignee
Lasag AG
Oscilloquartz SA
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 Lasag AG, Oscilloquartz SA filed Critical Lasag AG
Publication of GB1446806A publication Critical patent/GB1446806A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H13/00—Measuring resonant frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/351—Working by laser beam, e.g. welding, cutting or boring for trimming or tuning of electrical components
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06—Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • G04F5/063—Constructional details
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Laser Beam Processing (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Lasers (AREA)

Abstract

1446806 Working crystals LASAG SA and OSCILLOQUARTZ SA 11 April 1974 [19 April 1973] 16151/74 Heading B5E [Also in Division H1] A piezoelectric crystal 15, 41, e.g. quartz, is tuned by focusing pulses of a focused beam of radiation, such as light from a laser 27 or electrons from a source 49, on a surface of the crystal to remove small amounts of material, the beam being deflected so that any pulse does not impinge on the crystal at the same point as the immediately preceding pulse. The points of impact of the beam may be arranged in a geometric pattern, e.g. concentric circles or a spiral, Figs. 1 and 2 (not shown). The crystals to be tuned are mounted on a turntable 17, 43 and the next crystal to be tuned 15<SP>1</SP>, 41<SP>1</SP> has its natural frequency measured by devices 22, 45 so that when it comes to the operative position a computer 24, 46 can cause a modulator 26, 47 to apply an appropriate number of beam pulses to achieve the desired tuned frequency. In Fig. 4 the light beam is scanned by a rotating and tilting mirror 29 and in Fig. 5 a deflecting field is provided at 52.
GB1615174A 1973-04-19 1974-04-11 Method and apparatus for tuning the natural frequency of an oscillating body formed of a piezoelectric crystal Expired GB1446806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH564873A CH604268B5 (en) 1973-04-19 1973-04-19

Publications (1)

Publication Number Publication Date
GB1446806A true GB1446806A (en) 1976-08-18

Family

ID=4297103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1615174A Expired GB1446806A (en) 1973-04-19 1974-04-11 Method and apparatus for tuning the natural frequency of an oscillating body formed of a piezoelectric crystal

Country Status (7)

Country Link
JP (1) JPS5014288A (en)
CH (2) CH604268B5 (en)
DE (1) DE2335495B2 (en)
FR (1) FR2226257B1 (en)
GB (1) GB1446806A (en)
IT (1) IT1009891B (en)
NL (1) NL7405284A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401876A (en) 1980-05-20 1983-08-30 Martin Cooper Working gemstones
GB2152281A (en) * 1983-12-28 1985-07-31 Rene Lefevre Process for producing miniature piezoelectric devices using laser machining and devices obtained by this process
GB2151978A (en) * 1983-12-29 1985-07-31 Toshiba Ceramics Co Method of and apparatus for machining a ceramic member
US5932119A (en) 1996-01-05 1999-08-03 Lazare Kaplan International, Inc. Laser marking system

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4875924A (en) * 1972-01-12 1973-10-12
JPS5199219U (en) * 1975-02-08 1976-08-09
JPS5199220U (en) * 1975-02-08 1976-08-09
FR2319242A1 (en) * 1975-07-25 1977-02-18 Thomson Csf Control of charged particle machining of substrate - is particularly for thickness control and uses substrate resonant frequency
JPS5215285A (en) * 1975-07-25 1977-02-04 Seiko Instr & Electronics Ltd Method of processing piezo-electric oscillator
CH588169A5 (en) * 1975-09-12 1977-05-31 Suisse Horlogerie
JPS5759649Y2 (en) * 1976-12-24 1982-12-20
CH630747A5 (en) * 1979-01-18 1982-06-30 Ebauches Sa METHOD FOR ADJUSTING THE FREQUENCY OF A RESONATOR AND RESONATOR WITH ADJUSTED FREQUENCY OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS.
US4638205A (en) * 1980-05-06 1987-01-20 Tdk Electronics Co., Ltd. Piezo-electric transducer
US4455500A (en) * 1983-07-28 1984-06-19 Western Geophysical Company Of America Sensitivity and capacitance adjustment method for piezoelectric accelerometers
US5138214A (en) * 1989-12-27 1992-08-11 Matsushita Electric Industrial Co., Ltd. Piezoelectric transducer and method of adjusting oscillation frequency thereof
CN109986702A (en) * 2017-12-29 2019-07-09 晶石科技(中国)股份有限公司 A kind of wrist-watch sapphire glass cutting processing technique

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401876A (en) 1980-05-20 1983-08-30 Martin Cooper Working gemstones
GB2152281A (en) * 1983-12-28 1985-07-31 Rene Lefevre Process for producing miniature piezoelectric devices using laser machining and devices obtained by this process
GB2151978A (en) * 1983-12-29 1985-07-31 Toshiba Ceramics Co Method of and apparatus for machining a ceramic member
US5932119A (en) 1996-01-05 1999-08-03 Lazare Kaplan International, Inc. Laser marking system
US6211484B1 (en) 1996-01-05 2001-04-03 Lazare Kaplan International, Inc. Laser making system and certificate for a gemstone
US6476351B1 (en) 1996-01-05 2002-11-05 Lazare Kaplan International, Inc. Laser marking system
EP2216126A2 (en) 1996-01-05 2010-08-11 Lazare Kaplan International Inc. Laser marking system for gemstones and method of authenticating marking

Also Published As

Publication number Publication date
CH564873A4 (en) 1977-08-15
NL7405284A (en) 1974-10-22
FR2226257B1 (en) 1976-10-08
JPS5014288A (en) 1975-02-14
IT1009891B (en) 1976-12-20
DE2335495A1 (en) 1975-01-02
FR2226257A1 (en) 1974-11-15
DE2335495B2 (en) 1976-07-29
CH604268B5 (en) 1978-08-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee