Vibration wave motor and drive device

A drive device, comprising:

• a vibration wave motor including:
• a vibrator including a piezoelectric element and a vibrating plate;
• a friction member, which includes a friction-contact surface to be brought into contact with the vibrator, and is configured to perform relative movement with respect to the vibrator by vibration generated by the vibrator;
• and
• a guide mechanism, which includes a first guide member, a second guide member, and a rolling member arranged between the first guide member and the second guide member, and is configured to guide the relative movement,
• wherein the first guide member includes a groove portion formed of a first surface and a second surface to be brought into contact with the rolling member, and
• wherein the first surface is longer than the second surface in a direction of the relative movement, and
• a driven portion to which a driving force of the vibration wave motor is transmitted.