41results about How to "Wide directivity" patented technology

A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

A first metal plate for transmission and a second metal plate for transmission are closely-attached to a first surface and a second surface of a dielectric body, respectively. An outer edge of the first metal plate substantially symmetrically faces an outer edge of the second metal plate via the dielectric body. A metal plate for matching is arranged inside a hole formed on the second metal plate, with a slit formed with an inner wall of the hole, and is fixed to the dielectric body. The metal plate for matching is electrically connected to the first metal plate via a through hole penetrating the dielectric body. An IC chip is surface-mounted to connect the second metal plate with the metal plate for matching.

A light-emitting device is provided that can extract light in all directions and that has wide directivity. This light-emitting device includes: an elongated bar-shaped package extending sideways, the package being formed such that a plurality of leads are formed integrally with a first resin with part of the leads exposed; a light-emitting element that is fixed onto at least one of the leads and that is electrically connected to at least one of the leads; and a second resin sealing the light-emitting element. In the light-emitting device, the first resin and the second resin are formed of optically transparent resin, and the leads have outer lead portions used for external connection and protruding sideways from both left and right ends of the package.

A radio frequency IC tag has wide directivity and is rich in flexibility. A radiation conductor is formed on the entire surface of a dielectric formed of synthetic resin foam and a back conductor is formed on the entire back surface of the dielectric. An IC chip is mounted to the radiation conductor on the front side. An L-shaped slit is formed at the portion of the radiation conductor at which the IC chip is mounted. The radiation conductor and the back conductor have the same size or the size of the back conductor is not greater than twice the size of the radiation conductor.

A bending wave loudspeaker having an operating frequency range and a coincidence frequency which is above the operating frequency range, comprising a resonant panel having two generally orthogonal axes, vibration exciting means coupled to the panel to excite the panel into resonance along the one axis of the panel, and means restraining or preventing resonance along the other axis of the panel whereby the panel radiates an acoustic output which is of wide directivity along the one axis and of narrow directivity along the other axis of the panel.

A light-emitting body comprising a primary luminescent unit and a secondary luminescent unit that emits light owing to light emitted from the primary luminescent unit, wherein the secondary luminescent unit contains an iridium compound. As the iridium compound, an iridium complex represented by L1L2L3Ir, (L1, L2 and L3 are organic bidentate ligands coordinated to iridium, and at least one of these ligands coordinates with a nitrogen atom and a carbon atom) preferably, represented by formula (2) can be cited. (In the formula, X represents an atom group that forms an aromatic chelate ligand together with a carbon atom and a nitrogen atom bonded with iridium, n is an integer of 2 or 3, and L represents a bidentate organic ligand wherein the atoms other than carbon atoms are bonded with iridium.) The light-emitting body of the invention contains red (R), green (G) and blue (B) wavelength components to be wide in the color reproduction range, can be driven with a single power supply and control system, and does not cause photo-deterioration of constituent members.

A speaker of the present invention includes the following: a diaphragm that includes an inner periphery coupled to a voice coil, and a corrugation provided at the intermediate position between the inner periphery and an outer periphery; a speaker edge for supporting the outer periphery of the diaphragm; and a damping member attached to an outer peripheral part of the diaphragm outside the vicinity of an outer periphery of the corrugation. The effective vibration area of an inner peripheral part of the diaphragm inside an inner periphery of the corrugation is substantially half or less of the total effective vibration area. The damping member is configured as a damping portion by extending an overlap portion of the speaker edge overlapping with the diaphragm to the vicinity of the outer periphery of the corrugation. This configuration can suppress the vibration transmission at high frequencies to the outer peripheral part of the diaphragm outside the corrugation, allows only the inner peripheral part of the diaphragm inside the corrugation to mainly vibrate at high frequencies, and also can suppress a resonance in the outer peripheral part of the diaphragm outside the corrugation. Thus, the speaker can have both an excellent high frequency response and an excellent mid-high frequency response.

A speaker apparatus includes a speaker unit including a magnet configured to provide a magnetic field; and a membrane disposed in the magnet field, configured to be vibratable in a first direction, and configured to emit a sound in a second direction perpendicular to the first direction; and a blocking unit disposed at the membrane, configured to block a first region of the membrane having a first height along the first direction from being exposed and configured to expose a second region of the membrane having a second height, a sum of the first and the second heights corresponds to a total height of the membrane, wherein the first height of the membrane blocked by the blocking unit is less than a half of a wavelength corresponding to a maximum frequency in a frequency domain of the sound emitted from the membrane.

Provided are an antenna and a combination antenna having a wide directivity in a predetermined plane direction. The antenna 100 is configured to have rims 111, 112 at left and right ends of a dielectric substrate 101 in the X direction in such a manner as to sandwich antenna elements 10. The rims 111, 112 may be metal plates or EBGs. As the rims 111, 112 are thus provided at both sides to sandwich the antenna elements 10, it is possible to reduce the width of the dielectric substrate 101 of the antenna 100 required for realizing wide coverage. As a result, it is possible to create a greater space for integration of another RF circuit and improve the space factor.

A speaker device having a simple structure and exhibiting a wide directivity and an excellent frequency characteristic. A directivity adjustment panel covering a part of the vibration region of a diaphragm of a speaker unit is disposed at a distance from the edge portion of the periphery of the diaphragm and reflects the sound wave received from the diaphragm toward the direction of the diaphragm.

The present application relates to a flexible piezoelectric transducer and a system, the flexible piezoelectric transducer comprises: a flexible substrate which is circular in a first state and concave spherical in a second state, and which is capable of dynamically changing the radius of curvature by bending deformation; a flexible piezoelectric film layer which is arranged on the flexible substrate, at least one spiral electrode strip is arranged on the upper surface of the flexible piezoelectric film layer, the at least one spiral electrode strip has the same original point, and a fully-coated electrode is arranged on the lower surface of the flexible piezoelectric film layer. According to the flexible piezoelectric transducer and the system, the equipment integration degree is improved; by means of bending deformation of the flexible substrate and the flexible piezoelectric film layer, after phased excitation of acoustic spiral wave beams, the depth of a focal spot can be dynamically changed, the directivity of an emission array element is widened, energy superposition in a focusing area is enhanced, focusing acoustic vortex change is stable, and a long distance can be maintained in the propagation direction.

An antenna device includes a communication module and a loop-shaped conductor. The communication module has a substrate on which an approximately rectangular ground conductor is formed. A non-ground region is provided along one side of the ground conductor. A transmission line and a radiation element are formed in the non-ground region. Further, a capacitance element is connected to the radiation element, and the transmission line is connected to a feeding point of the radiation element. The loop-shaped conductor includes in part a gap that is positioned near the radiation element. With this, an antenna device to be provided in an electronic apparatus having wide directivity in a state of being attached to a garment, a person's body, or the like, and the stated electronic apparatus are configured.

The present invention provides a radome that can have a wide vertical radiation patter, as well as an antenna device provided with the radome, and a radar apparatus provided with the antenna device. The radome (10) includes an outer wall (11) having a side cross-section formed in a substantially semi-circular shape, and an inner wall (12) arranged at the inner side of the outer wall. The inner wall includes a first inner wall (211) and second inner walls (212). The first inner wall is arranged, in the side view, so as to be spaced from the outer wall by the fixed smallest gap (dc) within a range from a midpoint (Pc) on the circumference of the outer wall to prescribed distance positions toward both ends (Pe). Each second inner wall is composed of a flat plate which has an end connected with the end of the first inner wall and has a plane parallel to the straight line between the midpoint (Pc) and the center (Po). Therefore, the smallest gap (de) between the outer wall and the inner wall near the ends (Pe) of the outer wall becomes wider than the smallest gap (dc) between the outer wall and the inner wall near the midpoint (Pc) of the outer wall.

An electroacoustic transducer includes a diaphragm including a pair of convex surfaces respectively including convex surfaces of a pair of longitudinal split tubular members. A valley is formed between one side portions of the pair of longitudinal split tubular members. The electroacoustic transducer further includes: a converter configured to convert between a vibration of the diaphragm in a depth direction of the valley and an electric signal corresponding to the vibration; and a supporter supporting other side portions of the pair of longitudinal split tubular members of the diaphragm so as to allow the other side portions to vibrate in a vibration direction of the vibration.

Disclosed herein is a speaker system unit with a cone type vibration plate, a horn and a diffuser. The horn is disposed such that a small-diameter opening thereof is positioned inward from a front opening of the vibration plate, and an outer surface of the horn is arranged along an inner surface of the vibration plate to form a first acoustic path. The diffuser has a base portion, a front end portion and an outer peripheral surface extending therebetween, and is disposed such that the base portion is positioned inward from a front opening of the horn, opposite the small-diameter opening of the horn. The diffuser has a specific shape such that the outer peripheral surface expands along an inner surface of the horn to form a second acoustic path and then narrows toward the front end portion of the diffuser.

A vacuum cleaner includes a first transmitting unit transmitting a signal including first identification information with directivity of a predetermined width, and a first receiving unit receiving a signal with directivity wider than directivity of the first transmitting unit. A charger includes a second receiving unit receiving the signal including the first identification information, and a second transmitting unit transmitting a signal including second identification information when the second receiving unit receives the signal including the first identification information. A first control unit controls, when the signal including the second identification information is received by the first receiving unit, drive of a motor to allow a body case to travel based on a direction that the signal including the first identification information is transmitted.

An electroacoustic transducer is provided and includes: a diaphragm having a pair of longitudinal split tubular surfaces arranged next to each other, a valley being formed between respective side portions of the pair of longitudinal split tubular surfaces; a converter including a magnet mechanism and a voice coil configured to perform conversion between vibration of the diaphragm along a depth direction of the valley and an electric signal corresponding to the vibration; and a supporter that supports the diaphragm such that the diaphragm is vibratable along the depth direction of the valley. A tubular portion is provided at an intermediate portion of the valley to couple the diaphragm and the voice coil to each other, and the tubular portion extends in the depth direction of the valley.

A vacuum cleaner includes a first transmitting unit transmitting a signal including first identification information with directivity of a predetermined width, and a first receiving unit receiving a signal with directivity wider than directivity of the first transmitting unit. A charger includes a second receiving unit receiving the signal including the first identification information, and a second transmitting unit transmitting a signal including second identification information when the second receiving unit receives the signal including the first identification information. A first control unit controls, when the signal including the second identification information is received by the first receiving unit, drive of a motor to allow a body case to travel based on a direction that the signal including the first identification information is transmitted.

An electroacoustic transducer includes a diaphragm including a pair of convex surfaces respectively including convex surfaces of a pair of longitudinal split tubular members. A valley is formed between one side portions of the pair of longitudinal split tubular members. The electroacoustic transducer further includes: a converter configured to convert between a vibration of the diaphragm in a depth direction of the valley and an electric signal corresponding to the vibration; and a supporter supporting other side portions of the pair of longitudinal split tubular members of the diaphragm so as to allow the other side portions to vibrate in a vibration direction of the vibration.

The invention relates to a panel loudspeaker. The panel loudspeaker comprises a vibrating diaphragm, a piezoelectric device and an outer frame with at least one opening end. The vibrating diaphragm is arranged on the outer part of the outer frame. One end of the vibrating diaphragm is fixed on the opening ends of the outer frame. One end of the piezoelectric device is fixed on the vibrating film and then is surrounded by the outer frame. A positive electrode conductive area and a negative electrode conductive area are arranged on the piezoelectric device. The positive electrode conductive area and the negative electrode conductive area are respectively connected with conductive electrodes. The panel loudspeaker is characterized in that the panel loudspeaker is ultra-thin and sound quality is high.

A speaker system has a speaker unit with a vibration plate of a corn type, a horn and a diffuser. The horn is disposed such that a small-diameter opening thereof is positioned inward from a front opening of the vibration plate, and an outer surface of the horn is arranged along an inner surface of the vibration plate from the small-diameter opening to form a first acoustic path. The diffuser has a base portion, a front end portion and an outer peripheral surface extending therebetween, and is disposed such that the base portion is positioned inward from a front opening of the horn and opposed to the small-diameter opening of the horn. The diffuser has a specific shape such that the outer peripheral surface expands along an inner surface of the horn from the base portion to form a second acoustic path. The expanding outer peripheral surface of the diffuser is then narrowed toward the front end portion of the diffuser.

An antenna device includes a communication module and a loop-shaped conductor. The communication module has a substrate on which an approximately rectangular ground conductor is formed. A non-ground region is provided along one side of the ground conductor. A transmission line and a radiation element are formed in the non-ground region. Further, a capacitance element is connected to the radiation element, and the transmission line is connected to a feeding point of the radiation element. The loop-shaped conductor includes in part a gap that is positioned near the radiation element. With this, an antenna device to be provided in an electronic apparatus having wide directivity in a state of being attached to a garment, a person's body, or the like, and the stated electronic apparatus are configured.

A microphone array device including microphone capsules and at least one processing unit configured to receive output signals of the microphone capsules, dynamically steer an audio beam based on the received output signal of the microphone capsules, and generate and provide an audio output signal based on the received output signal of the microphone capsules. The processing unit is configured to operate in a dynamic beam mode where at least one focused audio beam is formed that points towards a detected audio source and in a default beam mode where a broader audio beam is formed that covers substantially a default detection area. The microphone array may be incorporated into a conference system.

A radome capable of increasing directivity in the vertical direction, an antenna device including the radome, and a radar device including the antenna device are realized. A radome (10) includes an outer wall (11) having a semicircular side section, and an inner wall (12) disposed inside the outer wall. The inner wall is composed of a first inner wall (211) and a second inner wall (212). When the first inner wall is viewed from the side, it is from the midpoint (Pc) on the circumference of the outer wall to the distance between the midpoint (Pc) and the two ends (Pe). In the range of predetermined positions between them, they are arranged with a fixed minimum distance (dc) from the outer wall. The second inner wall is formed of a flat plate having one end connected to the end of the first inner wall and having a plane parallel to a straight line connecting the midpoint (Pc) and the center (Po). Accordingly, the shortest distance (de) between the outer wall and the inner wall near the end (Pe) of the outer wall is wider than the shortest distance (dc) between the outer wall and the inner wall near the midpoint (Pc) of the outer wall.

There is provided a boundary microphone inside which a unidirectional microphone unit is contained, the microphone including: a base plate; and a cover plate attached onto an upper face side thereof, wherein a thin and long tubular groove acting as an acoustic tube for making unidirectivity of the microphone unit a narrow directivity is formed on the base plate side, and therein, the microphone unit is contained. In order to prevent liquid from entering the tubular groove from the outside, between a peripheral edge part of the cover plate and the upper face of the base plate, a spacer that is composed of a water repellent thin film material and allows an inside of the tubular groove and outside air to communicate via acoustic resistance with a thin air layer is disposed so as to enclose an entire periphery of the tubular groove.

A speaker of the present invention includes the following: a diaphragm that includes an inner periphery coupled to a voice coil, and a corrugation provided at the intermediate position between the inner periphery and an outer periphery; a speaker edge for supporting the outer periphery of the diaphragm; and a damping member attached to an outer peripheral part of the diaphragm outside the vicinity of an outer periphery of the corrugation. The effective vibration area of an inner peripheral part of the diaphragm inside an inner periphery of the corrugation is substantially half or less of the total effective vibration area. The damping member is configured as a damping portion by extending an overlap portion of the speaker edge overlapping with the diaphragm to the vicinity of the outer periphery of the corrugation. This configuration can suppress the vibration transmission at high frequencies to the outer peripheral part of the diaphragm outside the corrugation, allows only the inner peripheral part of the diaphragm inside the corrugation to mainly vibrate at high frequencies, and also can suppress a resonance in the outer peripheral part of the diaphragm outside the corrugation. Thus, the speaker can have both an excellent high frequency response and an excellent mid-high frequency response.

An antenna includes a magnetic current element which is an element to constitute a loop and generates a magnetic current vector having a component perpendicular to a loop plane, and an electric current element to generate an electric current vector having a component parallel to the magnetic current vector.