| 摘要 |
PURPOSE:To make the frequency adjustment of a vibrator accurate by forming an insulating tube part opposed to an electrode of the vibrating element into a plane in parallel with the electrode to improve the positioning accuracy of laser light. CONSTITUTION:A package 31 to build in a vibrating element where an electrode pattern is formed to a strip form substrate cut out of a crystal plate of LiTaO3 is constituted by a glass tube 32 having the capacity of transmission of YAG laser light therethrough and a couple of metallic caps 34 to seal airtightly the open end of the glass tube 32. One end of the glass tube 32 is formed with a plane section 33 and the section is bonded by a sealing member after a cap 34 is fitted to the outside of the end of the glass tube 32. When one major plane of the vibrating element is incorporated to be made in parallel with the plane section 33, the laser spot for trimming of the electrode formed as a pattern on the major plane is moved on the electrode without being changed by the glass tube 32. |
