Abstract: A compact enclosed type vibrator capable of ensuring a large amount of vibration has a casing (5), a coil (10) and a magnetic circuit unit (11) provided in the casing, and a suspension (3) supporting the magnetic circuit unit. The magnetic circuit unit has an extent in the radial direction and has an outer peripheral surface set adjacent to the inner peripheral surface of the casing across an annular gap. At least one of the casing and the magnetic circuit unit is provided with a vent passage (13a and 13b) that additionally communicates between a first space (17) and a second space (18) formed at the upper and lower sides of the magnetic circuit unit.

Abstract: A backlight unit can change the directional characteristics of exiting light by selectively turning on two light sources. The backlight unit includes a first prism sheet (4) having on a lower surface thereof a plurality of parallel prisms (3), a first lightguide plate (5) disposed underneath the first prism sheet (4), a second prism sheet (6) disposed underneath the first lightguide plate (5) and having on a lower surface thereof a plurality of parallel prisms (3), a second lightguide plate (7) disposed underneath the second prism sheet (6), a first light source (8) disposed adjacent to an edge surface of the first lightguide plate (5) to emit light into the first lightguide plate (5), and a second light source (9) disposed adjacent to an edge surface of the second lightguide plate (7) to emit light into the second lightguide plate (7).

Abstract: A light guide plate includes a top surface serving as a light-emitting surface, a bottom surface serving as a reflecting surface, and a periphery having a first side surface serving as an incident surface and a second side surface opposite the first side surface. The bottom surface is provided with reflecting prisms successively arranged in a direction from the first to second side surface. Each reflecting prism has a first slant surface and a second slant surface succeeding to the first slant surface. The first slant surface extends toward the top surface in a direction from the first side surface toward the second side surface and the second slant surface extends away from the top surface in the same direction. The second slant surface is formed such that a large part of light reflected back from the second side surface toward the first side surface is emitted from an area of the top surface near the first side surface.

Abstract: An acoustic apparatus comprising a yoke, a main speaker mechanism disposed on a first surface of the yoke, and a sub speaker mechanism disposed on a second surface of the yoke opposite to the first surface and adjacent to the main speaker mechanism, the main speaker mechanism including a first magnet disposed on the first surface of the yoke, a first top plate disposed on the first magnet, a vibration-transmitting panel attached to the yoke and contactable with a vibrating member in a communication device, and a first voice coil attached to the vibration-transmitting panel and inserted in a first magnetic gap formed between the yoke and the first magnet, the sub speaker mechanism including a second magnet disposed on the second surface of the yoke, a second top plate disposed on the second magnet, a vibrating plate attached to a frame disposed to surround the yoke and a second voice coil attached to the vibrating plate and inserted in a second magnetic gap formed between the yoke and the second magnet.

Abstract: A substrate is prepared that includes substrate segments arranged in series in the X and Y directions. The substrate segments are respectively provided with circuit patterns on its one side and electrodes on the other side. Sets of IC devices including bobbins are mounted on the sides with the circuit patterns of the respective substrates. A conductor is wound around the bobbins successively to form the windings. Portions of the conductor extending between the adjacent windings are pressed against and connected to the circuit patterns to form leading and trailing ends of the windings connected to the circuit patterns. Thereafter, the substrate is severed to provide surface-mount coil packages each comprising the circuit board and the set of IC devices including the coil.

Abstract: A white LED (20) for emitting illumination light entirely to exterior, comprising a first LED element (4) and a second LED element (5) which have mutually different emission wavelengths, and a sealing member (10) including a fluorescent material (8) which is excited to emit yellow light (sy) and for sealing at least the first LED element, the first LED element (4) being a long wave length-blue LED element for emitting blue light (sb 1) of a long wave length in which a peak wave length is in the range of 470 nm to 490 nm, the second LED element being a red LED element for emitting red light (sr).

Abstract: A light guide plate comprises: a plate ember having a light transmitting capability; and a light incidence face provided on a side surface of the plate member; wherein the plate member changes a path of light emitted from a light source arranged to face the light incidence face and emits planar illumination light from an upper surface of the plate member onto an object to be illuminated; wherein an undulated surface portion is formed on the light incidence face. Further, the undulated surface portion is formed by smoothly connecting curved recessed portions and curved raised portions. This arrangement prevents bright lines from being produced near the light source and also prevents brightness variations, thus making uniform an intensity distribution of light that has entered the light guide plate.

Abstract: An edge-light type light guide plate 30 is provided and has a first surface 31 and a second surface 32 that are opposed to each other, and a peripheral edge surface extending between the peripheral edges of the first and second surfaces. A part of the peripheral edge surface is defined as a light entrance plane 30a. The first surface 31 has a series of parallel elongated convex surfaces 31a that have an arcuate cross-section and extend in a direction substantially perpendicularly intersecting the light entrance plane 30a. The second surface 32 has a series of parallel elongated concave surfaces 32a that have an arcuate cross-section and extend in a direction substantially perpendicularly intersecting the elongated convex surfaces 31a on the first surface.

Abstract: An LED comprising a circuit board, a connecting electrode unit provided on the circuit board, a reflective cup provided within the circuit board, an LED element disposed in the reflective cup and connected to the connecting electrode unit, and a resin with which the reflective cup is filled, a fluorescent material contained in the resin absorbing one portion of light emitted from the LED element and changing the wavelength of the light.

Abstract: An LED including a substrate having a pair of terminal electrodes, at least one LED element mounted on the substrate, a frame disposed on the substrate, holes provided in the substrate, concave portions provided in positions of the frame facing the holes, and a pair of conductive elastic members provided between the frame and the substrate, each of the conductive elastic members including a large diameter portion inserted in the corresponding concave portion and a small diameter portion inserted in the corresponding hole and electrically connected to the large diameter portion, the large diameter portions of the pair of conductive elastic members being electrically connected to the pair of terminal electrodes, respectively, and each of the large diameter portions having one end portion which is in contact with a bottom surface of the concave portion and each of the small diameter portions having one end portion which is disposed to project from the hole of the substrate.

Abstract: An electroacoustic transducer includes a yoke (1) having an annular intermediate yoke portion (1a), an inner yoke portion (1b) and an outer yoke portion (1c), a permanent magnet (3) provided on the outer yoke portion so as to surround the inner yoke portion and forming a magnetic gap (G) between itself and the inner yoke portion (1b), a voice coil (6) inserted into the magnetic gap, and a diaphragm (4) supporting the voice coil. The diaphragm has an outer annular portion (4a) secured to the inner peripheral surface of the outer yoke portion (1c) and extending toward the inner yoke portion, an inner portion (4b) disposed to face the distal end opening (1e) of the inner yoke portion (1b), and a cylindrical portion (4c) connected between the inner portion and the outer annular portion. The inner portion (4b) of the diaphragm has a dome portion that is convex toward the distal end opening.

Abstract: A light-emitting diode comprising a substrate having a surface on which connecting electrodes are formed and another surface on which terminal electrodes conducting with the connecting electrodes are provided, and an LED element mounted on the substrate, the LED element having an emission surface on one surface thereof, the emission surface being covered with a translucent resin containing fluorescent material, surfaces other than the emission surface being covered with a resin having a diffusion-reflection effect.

Abstract: A light emitting apparatus including a board (2), at least one LED element (3) mounted on the board (2), a first resinous sealing member (4) to seal the LED element (3) and having a linear coefficient of expansion, and a second resinous sealing member (5) to cover the first resinous sealing member (4) and having a linear coefficient of expansion, the first resinous sealing member (4) containing a functional additive comprising at least one of a fluorescent material, an inorganic filler, and a diffusing agent, the linear coefficient of expansion of the first resinous sealing member (4) being set to be substantially identical with the linear coefficient of expansion of the second resinous sealing member (5).

Abstract: A light emitting sheet module includes a light guiding sheet to cover a plurality of key switches, at least one LED disposed on at least one end portion of the light guiding sheet, and a circuit board disposed on the one end portion of the light guiding sheet on which the LED is disposed. When the light emitting sheet module is, mounted on a switch board, it is capable of adaptation to key switches in a wide variety of forms and to illuminate the key switches with light emission of high brightness.

Abstract: A casing 20 of a mobile phone body is provided with a sub-liquid-crystal display panel 23, a projector lens 26, a light source 35 including an LED. The sub-liquid-crystal display panel 23 and the projector lens 26 are movable between a normal position contained within the casing 20 and a raised position raised from the normal position. The sub-liquid-crystal display panel 23 is fixed at the raised position roughly perpendicularly to the light axis Q between the-sub-liquid-crystal display panel 23 and the light source 35 so that the light axis of the projector lens 26 is substantially aligned with the light axis Q. The illumination light from the light source is set to be parallel rays.

Abstract: A sheet switch module including a circuit board (22), at least one key switch (25) disposed on the circuit board, and a flexible light guiding sheet (31) which is disposed on the key switch and configured to cover the circuit board, the light guiding sheet being configured to flexibly fit over and follow the shape of the key switch along an outer surface of the key switch, when the light guiding sheet is disposed on the circuit board.

Abstract: A lens comprising a transparent member having at least two surfaces, and a Fresnel lens surface provided on each of the two surfaces of the transparent member, the transparent member including a generally plate-like shape having a first surface and a second surface opposing the first surface, the Fresnel lens surface being provided on each of the first and second surfaces of the transparent member.