Abstract: A projection-type display apparatus includes a driver unit and a diaphragm unit. The diaphragm unit includes a holding frame that has an opening, a film that is bonded to a film bonding surface as one surface of the holding frame with the opening being covered with the film, a diaphragm that is held on an inner side of the holding frame while being bonded to the film, and a transmission beam that transmits vibration of the vibrating portion to the diaphragm. The film has a first film surface and a second film surface on the opposite side to the first film surface, the film bonding surface and the diaphragm being bonded to the first film surface.

Abstract: [Object] To provide a balanced-armature acoustic converter and a sound output device that are capable of improving a sound pressure without increasing the size. [Solving Means] A projection-type display apparatus according to the present technology includes a driver unit and a diaphragm unit. The diaphragm unit includes a holding frame that has an opening, a film that is bonded to a film bonding surface as one surface of the holding frame with the opening being covered with the film, a diaphragm that is held on an inner side of the holding frame while being bonded to the film, and a transmission beam that transmits vibration of the vibrating portion to the diaphragm.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets disposed so as to face each other, a yoke to which the pair of magnets are attached, a coil to which driving current is supplied, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion being passed through the coil; and a diaphragm unit including a diaphragm, and a beam portion for propagating the vibration of the vibrating portion to the diaphragm; with a coil attachment portion to which the coil is attached, located in a state in parallel with the vibrating portion, being provided to the armature.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets, a yoke, a coil, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion being passed through the coil; and a diaphragm unit including a holding frame having an opening, a resin film adhered to the holding frame, a diaphragm held within the holding frame, and a beam portion for propagating the vibration of the vibrating portion to the diaphragm; with the beam portion being combined with one edge side of the diaphragm, a predetermined gap being formed between the other edge of the diaphragm, and the inner face of the holding frame, a reinforcing member being provided to the predetermined gap, and the diaphragm being combined with the holding frame by the resin film and the reinforcing member.

Abstract: An acoustic conversion device includes: a driving unit including magnets, a yoke, a coil, a vibrating portion, and an armature fixed to the yoke; a diaphragm unit including a holding frame fixed to the driving unit, with one face as a first-joint face jointed to the driving unit, and the other face as a second-joint face, a resin film adhered to the holding frame, a diaphragm held on the holding frame, and a beam portion propagating vibration from the vibrating portion to the diaphragm; and a storage unit including a case body for storing the driving unit and diaphragm unit; with the driving unit and diaphragm unit being stored in the case body, the case body being pressed against and deforming a sealing agent loaded in the second-joint face, from a side facing the second-joint face, thereby sealing each gap between the case body, cover body, and holding frame.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets disposed so as to face each other, a yoke to which the pair of magnets are attached, a coil to which driving current is supplied, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion passed through the coil; and a diaphragm unit including a holding frame having an opening, a resin film adhered to the holding frame in a state covering the opening of the holding frame, a diaphragm held on the inner side of the holding frame in a state adhered to the resin film, and a beam portion of which the tip portion formed integrally with the diaphragm is combined with the vibrating portion of the armature, for propagating the vibration of the vibrating portion to the diaphragm.

Abstract: A portable telephone and electronic device are provided. The portable telephone includes a casing having a first surface: a finger guide section that is provided in the first surface and guides a finger of a user to allow the finger to be placed so that a side portion of the finger faces the first surface; an illuminating section provided in the first surface so as to be adjacent to the finger guide section, the illuminating section being capable of radiating light of a predetermined wavelength that transmits through the placed finger; an imaging section provided in the casing so as to be spaced at a predetermined distance from the first surface with respect to a perpendicular direction, the imaging section being capable of imaging the light that has transmitted through the finger; and a control section that performs authentication of the user on the basis of an image obtained by the imaging.

Abstract: An acoustic conversion device includes: a driving unit including magnets, a yoke, a coil, a vibrating portion, and an armature fixed to the yoke; a diaphragm unit including a holding frame fixed to the driving unit, with one face as a first-joint face jointed to the driving unit, and the other face as a second-joint face, a resin film adhered to the holding frame, a diaphragm held on the holding frame, and a beam portion propagating vibration from the vibrating portion to the diaphragm; and a storage unit including a case body for storing the driving unit and diaphragm unit; with the driving unit and diaphragm unit being stored in the case body, the case body being pressed against and deforming a sealing agent loaded in the second-joint face, from a side facing the second-joint face, thereby sealing each gap between the case body, cover body, and holding frame.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets disposed so as to face each other, a yoke to which the pair of magnets are attached, a coil to which driving current is supplied, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion being passed through the coil; and a diaphragm unit including a diaphragm, and a beam portion for propagating the vibration of the vibrating portion to the diaphragm; with a coil attachment portion to which the coil is attached, located in a state in parallel with the vibrating portion, being provided to the armature.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets, a yoke, a coil, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion being passed through the coil; and a diaphragm unit including a holding frame having an opening, a resin film adhered to the holding frame, a diaphragm held within the holding frame, and a beam portion for propagating the vibration of the vibrating portion to the diaphragm; with the beam portion being combined with one edge side of the diaphragm, a predetermined gap being formed between the other edge of the diaphragm, and the inner face of the holding frame, a reinforcing member being provided to the predetermined gap, and the diaphragm being combined with the holding frame by the resin film and the reinforcing member.

Abstract: An acoustic conversion device includes: a driving unit including a pair of magnets disposed so as to face each other, a yoke to which the pair of magnets are attached, a coil to which driving current is supplied, a vibrating portion which vibrates when driving current is supplied to the coil, and an armature disposed between the pair of magnets with the vibrating portion passed through the coil; and a diaphragm unit including a holding frame having an opening, a resin film adhered to the holding frame in a state covering the opening of the holding frame, a diaphragm held on the inner side of the holding frame in a state adhered to the resin film, and a beam portion of which the tip portion formed integrally with the diaphragm is combined with the vibrating portion of the armature, for propagating the vibration of the vibrating portion to the diaphragm.

Abstract: A portable telephone and electronic device are provided. The portable telephone includes a casing having a first surface: a finger guide section that is provided in the first surface and guides a finger of a user to allow the finger to be placed so that a side portion of the finger faces the first surface; an illuminating section provided in the first surface so as to be adjacent to the finger guide section, the illuminating section being capable of radiating light of a predetermined wavelength that transmits through the placed finger; an imaging section provided in the casing so as to be spaced at a predetermined distance from the first surface with respect to a perpendicular direction, the imaging section being capable of imaging the light that has transmitted through the finger; and a control section that performs authentication of the user on the basis of an image obtained by the imaging.