Abstract: A vibration device includes vibration elements arranged side by side in a plane direction of a thin film, and the vibration elements are capable of being controlled in different vibrations respectively. The vibration device includes vibration elements having different frequencies of vibration. Further, the vibration device includes vibration elements having different phases. A vibration unit includes the vibration device and a control part controlling vibration of the vibration elements included in the vibration device. A vibration apparatus includes the vibration device, the control part, and a housing accommodating the vibration device and the control part, and includes a vibration part arranged on an outer surface of the housing and generating vibration caused by the vibration elements included in the vibration device.

Abstract: A piezoelectric unit includes a piezoelectric element, an output part, an input part, and a control part. The output part performs an output vibrating the piezoelectric element. The input part receives an input of a voltage generated by the piezoelectric element. The control part performs switching such that the output performed by the output part and the input performed by the input part alternate with each other. An input-output device includes a housing that accommodates the piezoelectric unit, and a contact part arranged on an outer surface of the housing. The contact part outputs vibration caused by the piezoelectric element and transmits an input resulting from contact from outside to the piezoelectric element.

Abstract: Provided are a vibration device, a vibration apparatus, and a method for manufacturing a vibration device. The vibration device includes a vibration element; a substrate having a placement surface on which the vibration element is placed; a wall portion formed around the placement surface; and a potting layer for sealing the vibration element placed on the placement surface of the substrate inside the wall portion. The vibration device is manufactured by forming the substrate by laminating a protective film having an opening on a base film; placing the vibration element in the opening of the protective film on the substrate; and sealing the vibration element placed in the opening of the protective film on the substrate by potting.

Abstract: A method for bonding metal parts to each other includes a first step of sandwiching a bonding member between surfaces to be bonded of a first metal part and a second metal part, the bonding member having a melting point within a range of ?150° C. to +150° C. with respect to melting points of the first and second metal parts, and a second step of resistance-welding the surfaces to be bonded of the first and second metal parts to each other using the bonding member.

Abstract: A contact formed by electroforming and extended in a direction roughly perpendicular to a voltage application direction in the electroforming has a contact portion disposed at one end of the contact, which is brought into sliding contact with a conductive member along the voltage application direction in the electroforming.

Abstract: A contact formed by electroforming and extended in a direction roughly perpendicular to a voltage application direction in the electroforming has a contact portion disposed at one end of the contact, which is brought into sliding contact with a conductive member along the voltage application direction in the electroforming.

Abstract: The present invention is to provide a display device capable of displaying a prescribed display pattern by making the pattern luminous as needed, while the rear side can usually be seen through easily. In order to achieve it, a display pattern 20 is formed with minute recesses 29 provided on at least one surface of a translucent substrate 10, and at least one light source 30 is disposed on a side end face of the translucent substrate 10. The area density of the minute recesses 29 constituting the display pattern 20 is set to not more than 20%, and the opening area of one recess 29 is set to not more than 0.03 mm2.

Abstract: A resin molding body has two faces (front face 15 and lower face 19) perpendicular to each other, and also has a total reflecting face 23 approximately having an angle of 45° with respect to these two faces. Plural collimating lenses 16 and a spacer 17 are integrally formed on one face. Plural collimating lenses 20 and a spacer 21 are also integrally formed on the other face. A wall taking-away portion 26 is concavely arranged between the two faces so as to be located on the rear face side of the total reflecting face 23. Guide holes 18, 22 for inserting guide pins thereinto and connected to optical connectors, etc. are bored on the two faces of the resin molding body.

Abstract: [Problem] An optical path converting type optical coupling element able to be bidirectionally used and restrain the number of parts at its minimum is provided. [Means for Resolution] A resin molding body has two faces (front face 15 and lower face 19) perpendicular to each other, and also has a total reflecting face 23 approximately having an angle of 45° with respect to these two faces. Plural collimating lenses 16 and a spacer 17 are integrally formed on one face. Plural collimating lenses 20 and a spacer 21 are also integrally formed on the other face. A wall taking-away portion 26 is concavely arranged between the two faces so as to be located on the rear face side of the total reflecting face 23. Guide holes 18, 22 for inserting guide pins thereinto and connected to optical connectors, etc. are bored on the two faces of the resin molding body.