Patent ID: 9653675
Date: 2017-05-16
CPC Classifications: G02B,G03B,H01L,H02N

Claim:
1. A driving apparatus comprising: a movable portion having a plurality of movable side guide portions; a base portion having a plurality of fixed side guide portions opposed to said plurality of movable side guide portions; a vibrator having a piezoelectric element, the vibrator being provided at either one of said movable portion and said base portion; a friction member provided at the other of said movable portion and said base portion; a pressing portion, provided at said one of said movable portion and said base portion, for applying a pressing force to said vibrator to bring the vibrator into pressed contact with said friction member; and a plurality of rolling portions sandwiched between said plurality of movable side guide portions and said plurality of fixed side guide portions, wherein said plurality of movable side guide portions and said plurality of fixed side guide portions extend with a predetermined length in a moving direction in which said movable portion is moved with respect to said base portion through said plurality of rolling portions by vibration excited by said piezoelectric element, and wherein, within spacing in a direction orthogonal to said moving direction of a pair of movable side guide portions of said plurality of movable side guide portions, a pressing center of said pressing portion and another movable side guide portion of said plurality of movable side guide portions are positioned.