Abstract: An image pickup apparatus includes an image sensor configured to photoelectrically convert an optical image of a subject to accumulate electric charge, an optical member located on a subject side of the image sensor, a vibration unit configured to vibrate the optical member, a display unit configured to display a moving image based on a captured image signal output from the image sensor, and a control unit configured to perform drive control of the image sensor, the vibration unit, and the display unit, wherein, in a case where the optical member is vibrated while the moving image is displayed, the control unit causes the vibration unit to vibrate the optical member in a time between two readout periods for reading out electric charge accumulated in the image sensor and not to vibrate the optical member in the readout periods.

Abstract: An image pickup apparatus includes an image sensor configured to photoelectrically convert an optical image of a subject to accumulate electric charge, an optical member located on a subject side of the image sensor, a vibration unit configured to vibrate the optical member, a display unit configured to display a moving image based on a captured image signal output from the image sensor, and a control unit configured to perform drive control of the image sensor, the vibration unit, and the display unit, wherein, in a case where the optical member is vibrated while the moving image is displayed, the control unit causes the vibration unit to vibrate the optical member in a time between two readout periods for reading out electric charge accumulated in the image sensor and not to vibrate the optical member in the readout periods.

Abstract: A dust removal apparatus includes a vibrating plate, a piezoelectric element, a power supply that applies the piezoelectric element with an alternating voltage; and a control circuit that changes a frequency of the alternating voltage, in which the piezoelectric element includes first and second electrodes and a piezoelectric material, a phase transition temperature T from a first crystal phase to a second crystal phase of the piezoelectric material is ?40° C.?T?85° C., the change of the frequency is for repeating a frequency sweep operation from a first frequency to a second frequency, and when a frequency at which an audible vibration is generated during the sweep operation is set as fns, a frequency at which the audible vibration is ended is set as fne, and a changing time from fns to fne during the sweep operation is set as ?tn, ?tn?10 ms is satisfied.

Abstract: A dust removal apparatus includes a vibrating plate, a piezoelectric element, a power supply that applies the piezoelectric element with an alternating voltage; and a control circuit that changes a frequency of the alternating voltage, in which the piezoelectric element includes first and second electrodes and a piezoelectric material, a phase transition temperature T from a first crystal phase to a second crystal phase of the piezoelectric material is ?40° C.?T?85° C., the change of the frequency is for repeating a frequency sweep operation from a first frequency to a second frequency, and when a frequency at which an audible vibration is generated during the sweep operation is set as fns, a frequency at which the audible vibration is ended is set as fne, and a changing time from fns to fne during the sweep operation is set as ?tn, ?tn?10 ms is satisfied.