Patent ID: 7557972
Filing Date: 2009-07-07
Classification: B81B,G02B,Y10T

Abstract:
1. A method of producing an oscillator device having an oscillating member, a resilient support and a supporting member, the oscillating member being resiliently supported by the resilient support for oscillation about an oscillation axis, said method comprising: forming the oscillating member with a movable element and a mass adjusting member for adjusting a mass of the oscillating member, while defining a cavity between the movable element and a portion of the mass adjusting member; and irradiating the mass adjusting member with a laser beam to partly remove a material of the mass adjusting member contiguous to the cavity, the material being removed thereby including a portion of the mass adjusting member not irradiated with the laser beam; further comprising a coil and a permanent magnet for driving said oscillating member, wherein said permanent magnet is provided at said oscillating member and wherein a gravity center of the permanent magnet and a gravity center of said movable element are offset with respect to the oscillation axis.