DUST REMOVING DEVICE AND IMAGING DEVICE

摘要

Provided is a dust removing device that can be designed and controlled appropriately and has high dust removal performance even at low temperature, and an imaging device using the dust removing device. In a dust removing device to be set on a base, including a piezoelectric element formed of a piezoelectric material and a pair of opposing electrodes, a vibration member, and a fixation member containing at least a high molecular compound component, a phase transition temperature T from a first ferroelectric crystal phase to a second ferroelectric crystal phase of the piezoelectric material is set to −60° C.≦T≦−5° C., and whereby, the dust removing device can be designed and controlled appropriately and high dust removal performance can be obtained even at low temperature.

主权项

1. A dust removing device to be set on a base, the dust removing device comprising:
a piezoelectric element comprising a piezoelectric material and a pair of opposing electrodes; a vibration member; and a fixation member containing at least a high molecular compound component, wherein a phase transition temperature T from a first ferroelectric crystal phase to a second ferroelectric crystal phase of the piezoelectric material is −60° C.≦T≦−5° C., and wherein a modulus of elasticity at 25° C. of the fixation member is smaller than a modulus elasticity at −5° C. of the fixation member.