PURPOSE: To attain the adjustment of a resonance frequency of an oscillator in both directions and to realize excellent performance of work by arranging minute particles on the surface of the oscillator including a driving electrode and melting the said minute particles by a laser light so as to adhere them on the surface of the oscillator.
CONSTITUTION: The minute particles 4 are arranged on the surface of the oscillator 1 including electrodes 2, 3, they are molten by a laser light and made adhere to the surface of the oscillator 1. The particles 4 are to be made adhere to the electrode 2 and a part 7 in the vicinity of the circumference. The reason why the minute particles 4 is made adhere to the part 7 is that leakage of energy exists in the part 7, the amount of energy at the part 7 is 1/10 of the amount of energy at the center of the electrode and then the minute adjustment of the resonance frequency is attained. Since the frequency is corrected downward by this method and it is possible for this method to combine with a conventional method correcting the frequency upward, the resonance frequency adjustment is conducted in both directions.
FUJIWARA YOSHIAKI
KOJIMA YUUJI
YAMADA SUMIO
