Abstract: The present invention provides a drive circuit capable of suppressing the power consumption required for driving a capacitive electromechanical transducer device. For driving the capacitive electromechanical transducer device constituted of two electromechanical transducer parts consisting of a first capacitive electromechanical transducer part and a second capacitive electromechanical transducer part and operated in response to two-phase sinusoidal signals having mutually opposite phases, the drive circuit includes an inductor which resonates with the first electromechanical transducer part and the second electromechanical transducer part, and a resonance frequency of the resonance circuit is set substantially equal to an operation frequency of the electromechanical transducer device. The first electromechanical transducer part and the second electromechanical transducer part are driven by the resonance circuit having such a constitution.

Abstract: An apparatus is disclosed for displaying to a viewer an image stereoscopically representing a three-dimensional object to be displayed. The apparatus includes: an emitter emitting light, having an intensity modulating section capable of intensity modulation for modulating an intensity of the light emitted from the emitter; a wavefront-curvature modulator capable of wavefront-curvature modulation for modulating a curvature of wavefront of the light emitted from the emitter; and a controller controlling the intensity modulation and the wavefront-curvature modulation, based on a luminance signal indicative of luminance of the image, and a depth signal indicative of depth of the image. The depth signal is a signal corresponding to depth data produced in a rendering process for the object to be displayed.