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
Grant status
Application
Patent type
Prior art keywords
beam
sp
gt
lt
tuned
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
Original Assignee
Lasag AG
OSCILLOQUARTZ
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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H13/00Measuring resonant frequency
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06Shaping the laser beam, e.g. by masks or multi-focusing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/351Working by laser beam, e.g. welding, cutting or boring for trimming or tuning of electrical components
    • GPHYSICS
    • G04HOROLOGY
    • G04FTIME-INTERVAL MEASURING
    • G04F5/00Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/04Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses
    • G04F5/06Apparatus for producing preselected time intervals for use as timing standards using oscillators with electromechanical resonators producing electric oscillations or timing pulses using piezoelectric resonators
    • G04F5/063Constructional details
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02Apparatus 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 piezo-electric or electrostrictive resonators or networks
    • H03H3/04Apparatus 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 piezo-electric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient

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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH564873 1973-04-19

Publications (1)

Publication Number Publication Date
GB1446806A true 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 (5)

Country Link
JP (1) JPS5014288A (en)
DE (1) DE2335495B2 (en)
FR (1) FR2226257B1 (en)
GB (1) GB1446806A (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
GB2151978A (en) * 1983-12-29 1985-07-31 Toshiba Ceramics Co Method of and apparatus for machining a ceramic member
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
US5932119A (en) 1996-01-05 1999-08-03 Lazare Kaplan International, Inc. Laser marking system

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4875924A (en) * 1972-01-12 1973-10-12
JPS5199220U (en) * 1975-02-08 1976-08-09
JPS5199219U (en) * 1975-02-08 1976-08-09
FR2319242B1 (en) * 1975-07-25 1977-12-09 Thomson Csf
JPS5215285A (en) * 1975-07-25 1977-02-04 Seiko Instr & Electronics Ltd Method of processing piezo-electric oscillator
FR2324165B1 (en) * 1975-09-12 1980-04-18 Suisse Horlogerie
JPS5759649Y2 (en) * 1976-12-24 1982-12-20
FR2447098A1 (en) * 1979-01-18 1980-08-14 Ebauches Sa A method of adjusting the frequency of a resonator and a resonator adjusted frequency obtained by carrying out this method
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

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 Type
FR2226257B1 (en) 1976-10-08 grant
DE2335495A1 (en) 1975-01-02 application
FR2226257A1 (en) 1974-11-15 application
DE2335495B2 (en) 1976-07-29 application
NL7405284A (en) 1974-10-22 application
JPS5014288A (en) 1975-02-14 application

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Legal Events

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