Abstract: A haptic actuator includes a housing, an actuator having a first shaft and configured to rotate the shaft, a rotation-to-translation converter being coupled to the first shaft of the actuator, a second shaft provided in parallel to or in coaxial with the first shaft of the actuator; and a displacement unit configured to move along the second shaft depending on a movement of the rotation-to-translation converter.

Abstract: One embodiment relates to a method for creating a fast vanishing light scattering surface/volume to which an image is projected. The method includes: creating two portions of atomized particles of a given particle size that does not allow an incident light having a visible spectrum from being scattered, reflected and/or dissipated; and ejecting these two portions of the atomized particles from two opposite directions towards each other. The atomized particles collide/contact with each other to aggregate, thereby creating the fast vanishing light scattering surface/volume at a specific spatial region in which the aggregated particles allow the incident light to be scattered, reflected and/or dissipated.

Abstract: One embodiment relates to a haptic stylus includes: a stylus housing; a stylus tip attached to one end of the stylus housing, so as to be in contact with an interaction surface, such as a touchscreen; a stylus covering attached to a circumference of the stylus housing, so as to be movable with respect to the stylus housing along a longitudinal direction of the haptic stylus and so as to be gripped/held by user's fingers; and a first actuator configured to activate the stylus housing to thereby cause a stick-slip phenomenon between the stylus covering and the user's fingers gripping/holding the stylus covering thereby allowing the user's fingers to grip/hold the stylus covering while moving along the longitudinal direction of the haptic stylus.

Abstract: One embodiment of the present invention provides a living body stimulation device including: an envelope body having a living body contact surface which is to be brought into contact with a stimulation-target site of a living body; a propagation medium sealed in the envelope body and made of a liquid or gel material capable of transmitting a vibration and/or pressure; and an actuator configured to apply the vibration and/or pressure to the propagation medium. The vibration and/or pressure applied to the propagation medium by the actuator propagates through the propagation medium to the living body contact surface of the envelope body, to thereby stimulate the living body.

Abstract: One embodiment relates to a haptic stylus includes: a stylus housing; a stylus tip attached to one end of the stylus housing, so as to be in contact with an interaction surface, such as a touchscreen; a stylus covering attached to a circumference of the stylus housing, so as to be movable with respect to the stylus housing along a longitudinal direction of the haptic stylus and so as to be gripped/held by user's fingers; and a first actuator configured to activate the stylus housing to thereby cause a stick-slip phenomenon between the stylus covering and the user's fingers gripping/holding the stylus covering thereby allowing the user's fingers to grip/hold the stylus covering while moving along the longitudinal direction of the haptic stylus.

Abstract: One embodiment relates to a method for creating a fast vanishing light scattering surface/volume to which an image is projected. The method includes: creating two portions of atomized particles of a given particle size that does not allow an incident light having a visible spectrum from being scattered, reflected and/or dissipated; and ejecting these two portions of the atomized particles from two opposite directions towards each other. The atomized particles collide/contact with each other to aggregate, thereby creating the fast vanishing light scattering surface/volume at a specific spatial region in which the aggregated particles allow the incident light to be scattered, reflected and/or dissipated.

Abstract: One embodiment of the present invention provides a living body stimulation device including: an envelope body having a living body contact surface which is to be brought into contact with a stimulation-target site of a living body; a propagation medium sealed in the envelope body and made of a liquid or gel material capable of transmitting a vibration and/or pressure; and an actuator configured to apply the vibration and/or pressure to the propagation medium. The vibration and/or pressure applied to the propagation medium by the actuator propagates through the propagation medium to the living body contact surface of the envelope body, to thereby stimulate the living body.

Abstract: A headphone device having a constant pressing force adjustable in accordance with the size of individual wearer's head when the headphone units thereof are attached to wearer's ears. A force for pressing the headphone units against the wearer's ears is produced by means of a torsion elasticity of an elastic band. The elastic band is a molded resin member having an approximately C-shaped cross-section, and provided with a pair of curved elements in the vicinity of couplings each located between the elastic band and a headphone unit. A twist is applied to the elastic band by virtue of displacement of the headphone units in a direction of the units facing each other.