Patent ID: 6608455
Filing Date: 2003-08-19
Classification: G03B,H02N

Abstract:
A driving apparatus for a vibration type motor, in which a periodic signal is applied to an electro-mechanical energy conversion element portion of the vibration type motor to generate a vibration therein and drive a driven member of the vibration type motor with a driving force, the driving apparatus comprising:a setting circuit that sets a movement amount of the driven member of the vibration type motor; a driving circuit that applies a periodic signal to the electro-mechanical energy conversion element portion of the vibration type motor; and a power supply circuit that supplies electric power to said driving circuit; wherein said power supply circuit supplies a first voltage to said driving circuit when the movement amount of the driven member set by said setting circuit is equal to or larger than a predetermined movement amount, and said power supply circuit supplies a second voltage higher than the first voltage to said driving circuit when the movement amount set by said setting circuit is smaller than the predetermined movement amount.