Patent application number | Description | Published |
20080238249 | PIEZOELECTRIC MOTOR AND PIEZOELECTRIC MOTOR SYSTEM - A piezoelectric motor includes: a plurality of piezoelectric units, respectively in contact with a driven target, disposed separately from each other, and configured to drive the driven target; and a magnet configured to apply a preload force to each of the plurality of piezoelectric units by magnetically attracting the driven target in the absence of direct contact with the driven target. | 10-02-2008 |
20090039734 | PIEZOELECTRIC MOTOR AND CAMERA DEVICE - A piezoelectric motor includes: a driven member having a substantially spherical shape; a base; a support member provided on the base; a gimbal frame that is provided on a periphery of the driven member; a first bearing that couples the gimbal frame to the support member to be rotatable around a first rotation axis; a second bearing that couples the driven member to the gimbal frame to be rotatable around a second rotation axis that is orthogonal to the first rotation axis; a plurality of piezoelectric elements, each of which has one end fixed onto the base and the other end disposed to be in contact with an actuation portion that abuts the driven member; and an elastic portion that is formed on the gimbal frame, the elastic portion being displaceable in a direction orthogonal to the first rotation axis and the second rotation axis. | 02-12-2009 |
20090040462 | DEFORMABLE MIRROR DEVICE AND APPARATUS FOR OBSERVING RETINA OF EYE USING THE SAME - A deformable mirror device includes a substrate; a plurality of electrodes provided on the substrate; a spacer disposed on the substrate; a support member disposed above the spacer and having an opening passing through from a first face of the support member facing to the substrate to a second face of the support member opposite from the first face; a deformable electrode film formed below the first face of the support member so as to be opposed to the electrodes with a distance and so as to cover the opening; an insulation film provided between the deformable electrode film and the support member; and a reflection film provided on a face of the deformable electrode film opposite from the electrodes so as to overlap the opening. The electrodes are electrically insulated each other by a plurality of grooves radially extending from a region which includes a position corresponding to a center of the opening. | 02-12-2009 |
20090051874 | DEFORMABLE MIRROR DEVICE AND APPARATUS FOR OBSERVING RETINA OF EYE USING THE SAME - A deformable mirror device includes a substrate; a plurality of electrodes provided on the substrate; a spacer disposed on the substrate; a support member disposed above the spacer and having an opening passing through from a first face of the support member facing to the substrate to a second face of the support member opposite from the first face; a deformable electrode film formed below the first face of the support member so as to be opposed to the electrodes with a distance and so as to cover the opening; an insulation film provided between the deformable electrode film and the support member; a reflection film provided on a face of the deformable electrode film opposite from the electrodes so as to overlap the opening; and a plurality of through holes passing through the reflection film and the deformable electrode film and disposed so as to overlap the opening. | 02-26-2009 |
20120033530 | SOUND IMAGE LOCALIZATION APPARATUS - According to one embodiment, a sound image localization apparatus includes following units. The first signal generating unit is configured to generate a first acoustic signal. The first speaker is configured to generate a first sound according to the first acoustic signal. The input unit is configured to input a localization magnification n. The first control filter unit is configured to adjust the first acoustic signal with a first control filter G | 02-09-2012 |
20120177238 | ACOUSTIC REPRODUCTION DEVICE - According to one embodiment, an acoustic reproduction device includes a loudspeaker unit, a loudspeaker rear chamber unit, and a port unit. The loudspeaker unit generates a sound wave. The loudspeaker rear chamber unit includes a chamber portion in which the loudspeaker unit is arranged, and at least one of a duct portion and a branch portion. The duct portion and the branch portion each have a volume, a cross-sectional area, and a length different from those of the chamber portion. A port unit is connected to the loudspeaker rear chamber unit and has a port to externally output a rear wave. The duct portion guides the rear wave from the loudspeaker unit up to the port unit. | 07-12-2012 |
20120195447 | SOUND FIELD CONTROL APPARATUS AND METHOD - According to one embodiment, a sound field control apparatus is provided with a control filter and a calculation unit. The filter executes an FIR computation for an acoustic signal using coefficients to output a main signal and control signals. The unit calculates the main coefficient and the coefficients based on Spatial transmission characteristics and a sound increase factor n, to set a composite sound pressure from a main speaker and control speakers to a first area to be n times of a coming sound pressure from only the main speaker, and to set a composite sound pressure from the main speaker and control speakers to a second area to be equal to the coming sound pressure from only the main speaker. | 08-02-2012 |
20120328108 | ACOUSTIC CONTROL APPARATUS - According to an embodiment, a control filter coefficient is calculated in such a manner that a second spatial average of one or more complex sound pressure ratios at one or more target binaural positions when a first loudspeaker and a second loudspeaker emit a second acoustic signal and a first acoustic signal is approximated to a first spatial average of one or more complex sound pressure ratios at the one or more target binaural positions when a target virtual acoustic source emits the first acoustic signal. | 12-27-2012 |
20130329932 | SOUND COLLECTOR AND ELECTRONIC APPARATUS HAVING SOUND COLLECTOR - According to one embodiment, a sound collector includes a housing and a microphone holding member. The housing includes an opening portion. The opening portion is configured to receive a sound wave having a path. The housing is configured to be tightly closed except the opening portion. The microphone holding member is configured to be provided in the housing and hold a microphone that receives the sound wave propagating through the path at a predetermined position. | 12-12-2013 |