发明名称 Method for adjusting the frequency of a piezoelectric crystal resonator
摘要 A process for adjusting the frequency of a resonator by bursts of laser beam shots which pierce successive lines or holes in a metal coating deposited on the resonator. The amount of material removed by a burst of shots varies in the course of the operating procedure so that the frequency of the resonator is adjusted towards the desired frequency by successive approximations. After each burst of shots, the frequency of the resonator is compared to a provisional limit frequency. The amount of material removed in the following line and the provisional limit frequency are changed or left unaltered, depending on the result of the comparison.
申请公布号 US4562370(A) 申请公布日期 1985.12.31
申请号 US19800112281 申请日期 1980.01.15
申请人 VON DACH, BERNARD 发明人 VON DACH, BERNARD
分类号 H03H9/21;H03H3/04;(IPC1-7):H01L41/08 主分类号 H03H9/21
代理机构 代理人
主权项
地址