111results about How to "Small transmission loss" patented technology

A substrate for forming a thin film composed mainly of gallium nitride, indium nitride or aluminum nitride, the substrate consisting of a sintered compact composed mainly of a ceramic material; and a thin-film substrate furnished with the thin film. The use of the sintered compact composed mainly of a ceramic material, especially translucent sintered compact, as the substrate enables formation thereon of a highly crystalline single-crystal thin film composed mainly of at least one member selected from among gallium nitride, indium nitride and aluminum nitride. Thus, there is provided a thin-film substrate furnished with a highly crystalline single-crystal thin film. Further, the use of the sintered compact composed mainly of a ceramic material enables providing of a light emitting element excelling in luminous efficiency.

A glass ceramic composition which consists essentially of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and a glass powder having a glass transition point of from 450 to 800° C., wherein the average of the major axes L of particles of the above inorganic material powder is from 0.5 to 15 μm, and the average of the ratios L / W of the major axes L to the minor axes W is at most 1.4. Further, a glass ceramic composition which consists essentially of, as represented by mass percentage, from 10 to 58% of an inorganic material powder having a melting point or a glass transition point of at least 1,000° C. and from 42 to 90% of a glass powder having a glass transition point of from 450 to 800° C., wherein the glass powder consists essentially of, as represented by mol %, SiO2: 35 to 70%, B2O3: 0 to 30%, Al2O3: 3 to 18%, MgO: 0 to 40%, CaO: 0 to 19%, BaO: 0 to 35% and ZnO: 0 to 9%.

The present invention relates to an apparatus for detecting an input position on a screen of a display monitor. The apparatus comprises a light guiding layer (301) having an optical structure such that a fraction (304) of the light (303) incident on the layer (301) from the apparatus' exterior is confined in the layer (301). The incident light (303) is emitted by a remote input device, operable by a user, for interacting with the apparatus. The remote input device is, for example, a laser pointer (205). Light detecting means (803) in the apparatus detects the light (304) confined in the layer (301). It is thus possible to determine the input position (206) where the light (207) from the input device enters the layer (301).

A high frequency circuit module for use in an automotive radar or the like, in which RF circuit parts are mounted on both sides of a hard multilayer dielectric substrate, and a transmission line connecting the RF circuit parts provided on both sides is constructed by a via group including a periodical structure or a via having a coaxial structure perpendicular to faces of the multilayer dielectric substrate. As the multilayer dielectric substrate, a hard multilayer substrate using metallic layers as a microstrip line wiring layer, a DC / IF signal line layer, and grounding metal layers for shielding which are disposed on and under the DC / IF signal line is employed. By using the transmission line achieved by a through via having the periodical structure or the through via having the coaxial structure, an electromagnetic wave propagating in parallel between the grounding conductors is confined.

An active energy ray (e.g. UV rays)-curable organopolysiloxane resin composition comprises (A) 100 parts by weight of an organopolysiloxane resin containing epoxy groups and aromatic hydrocarbon groups, (B) 0.05 to 20 parts by weight of a photo acid generator, (C) 0.01 to 20 parts by weight of a photosensitizer or photo-radical generator, and (D) 0 to 5,000 parts by weight of an organic solvent. An optical transmission component made of the above-mentioned composition cured by irradiation with active energy rays (for example, UV rays). A method for manufacturing an optical transmission component by irradiating the above-mentioned composition with active energy rays (for example, UV rays).

An automatic two-gear transformer for a pure electric automobile comprises an input shaft, a first middle shaft, a second middle shaft, a third middle shaft, a first cylindrical gear pair, a second cylindrical gear pair, a third cylindrical gear pair, a first torque transmission device, a second torque transmission device and a differential assembly; rotation center lines of the input shaft, the third middle shaft and the differential assembly are mutually parallel. According to the automatic two-gear transformer for the pure electric automobile, automatic two-gear speed change is adopted, the transmission ratio range is expanded, the performance requirement on a drive motor can be reduced greatly, an efficient and light drive motor is allowed to be used, and the total size, the total mass and the total cost of an electric drive system of the pure electric automobile are further reduced.

An integrated DWDM transmitter apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The support component includes a temperature adjustment component. The silica-on-silicon substrate overlies the support component and includes a silica layer and a silicon layer. The silica-on-silicon substrate includes a corresponding a substrate surface which includes a first surface region and a second surface region. In an embodiment, the two surface regions are not coplanar. The transmitter apparatus includes an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide. The transmitter apparatus also includes one or more semiconductor laser array chips overlying the first surface region of the silica-on-silicon substrate. Each of the laser array chips including two or more lasers, which are optically coupled to corresponding ones of the plurality of input waveguides.

According to a manufacturing method of an optical waveguide substrate including a core (12) and clads (11) (13) and provided with an optical axis conversion mirror (14) in the core and an alignment recess for the optical axis conversion mirror with respect to a light receiving and emitting element, the recess is obtained by obtaining an outline of the core by synthesizing at least an image captured by focusing a microscope (20) to a highest position (14a) of the core in an optical axis conversion mirror portion and an image captured by focusing the microscope to a lowest position (14d), and by determining a position of the alignment recess in reference to a center of gravity of the outline, and according to an optical waveguide substrate obtained by this manufacturing method, it becomes possible to provide an optical waveguide substrate in which the optical axis conversion mirror in the optical waveguide substrate and the light receiving and emitting element are aligned with respect to each other at an extremely high degree of accuracy and a manufacturing method thereof.

A tetrafluoroethylene / hexafluoropropylene copolymer has improved moldability in melt extrusion molding, especially with significant reduction of defects in high-speed extrusion coating of an electrical wire. The tetrafluoroethylene / hexafluoropropylene copolymer is obtained by polymerization of at least tetrafluoroethylene and hexafluoropropylene selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and a third monomer without mixing with the resin which has the melting point with the difference of 20 degree C. and more from the melting point of the tetrafluoroethylene / hexafluoropropylene copolymer; and has a complex viscosity of from 2.0×I03 to 10.0×I03 Pa*s and a storage modulus of from 0.1 to 3.5 Pa*s in melt viscoelasticity measurement under the condition of atmosphere temperature of 310 degree C. and angular frequency of 0.01 radian / second. The tetrafluoroethylene / hexafluoropropylene copolymer can be used in an electrical wire as a coating on a conductive core.

An integrated DWDM transmitter apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The support component includes a temperature adjustment component. The silica-on-silicon substrate overlies the support component and includes a silica layer and a silicon layer. The silica-on-silicon substrate includes a corresponding a substrate surface which includes a first surface region and a second surface region. In an embodiment, the two surface regions are not coplanar. The transmitter apparatus includes an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide. The transmitter apparatus also includes one or more semiconductor laser array chips overlying the first surface region of the silica-on-silicon substrate. Each of the laser array chips including two or more lasers, which are optically coupled to corresponding ones of the plurality of input waveguides.

The invention belongs to the field of planar transmitting array antennas, and discloses a low-profile and high-efficient polarization transformation transmitting array antenna. The low-profile and high-efficient polarization transformation transmitting array antenna comprises: a pyramidal horn antenna used as a feed of the transmitting array antenna, and double-layer and three-dimensional portion symmetrical cross oscillators of different sizes used as transmitting array cells. The double-layer and three-dimensional portion symmetrical cross units proposed by the invention have the capability of transforming among multiple polarization modes and small transmission loss. The transmitting array antenna formed by the proposed three-dimensional portion symmetrical cross oscillator units overcomes the shortage of a single polarization mode of the conventional transmitting array antenna, and can realize various polarization modes (including linear polarization and circular polarization). The aperture using efficiency of the antenna in various polarization modes is up to 54% or more, and the longitudinal section height thereof is also reduced significantly compared with that of the conventional transmitting array antenna, so that the development and application of the transmitting array antenna technology are effectively promoted.

On a first-signal-line side, a first resonant circuit is defined by a first inductance element, a first capacitance element, a second capacitance element, a third inductance element and a fifth inductance element, a third resonant circuit is defined by the first inductance element, the first capacitance element and the second capacitance element, and a fifth resonant circuit is defined by the first inductance element, the third inductance element, the first capacitance element, the second capacitance element and the fifth capacitance element. Similarly, on a second-signal-line side, a second resonant circuit, a fourth resonant circuit and a sixth resonant circuit are provided.

The invention provides a terahertz modulator adopting a graphene metal composite structure. The terahertz modulator consists of a substrate, a metal structure layer, an insulating dielectric layer, a graphene film layer and an electrode. The terahertz modulator applies voltage between the metal structure layer and the electrode to change the chemical potential of graphene, so as to modulate terahertz wave energy penetrating through a device; in addition, through the resonant interaction of the metal structure layer in a specific terahertz wave band, the modulation depth of the device in the resonant wave band is improved. According to the terahertz modulator, the high electron mobility property of the graphene and the resonant property of the metal structure are combined to obtain the terahertz modulator with high speed and large modulation depth, and the terahertz modulator can be widely applied to the fields of terahertz communication, terahertz detection, terahertz imaging and the like.

The invention provides a raw oil lifting system and a method for conveying a fluid by utilizing a sliding vane pump. The raw oil lifting system comprises an oil pipe and an oil pump connected with the oil pipe, wherein the oil pump is the sliding vane pump; the sliding vane pump is provided with a barrel-shaped stator; a drive shaft arranged in the stator along a direction parallel to the length of the stator, and a rotor sleeved onto the drive shaft are arranged in the stator; the lower end of the stator is provided with a suction disk; the upper end of the stator is provided with an exhaustion disk; the suction disk, the exhaustion disk and the stator form a barrel-shaped inner cavity; the rotor is arranged between the suction disk and the exhaustion disk; the suction disk is provided with a suction hole for sucking raw oil; and the exhaustion disk is provided with an exhaustion hole for exhausting the raw oil. The method for conveying the fluid by utilizing the sliding vane pump comprises the steps of sucking and exhausting the fluid from the direction of the end part of the stator to perform a lifting process.

A combine for driving a traveling section (2) by transmitting the power of an engine (21) to a transmission case (22) provided with a traveling speed change mechanism (40), characterized in that the power of the engine (21) is transmitted to a counter case (25) in order to drive a threshing section (4) by a substantially constant rotational output and the speed change output from the traveling speed change mechanism (40) is transmitted to the counter case (25) in order to drive a reaping section (7) at a speed synchronous with the vehicle speed, and the counter case (25) is arranged such that the reaping section (7) is driven at a substantially constant speed by a substantially constant rotational output from the counter case (25). The counter case (25) for driving the threshing section (4) at a constant speed can also drive the reaping section (7) at a speed synchronous with the vehicle speed or at a substantially constant speed, and the reaping section (7) can be driven at a constant speed utilizing a part of the driving system of the threshing section (4), resulting in simplification of driving structure of the reaping section (7), or the like and reduction of transmission loss.

The invention relates to a two-gear automatic gearbox for a pure electric vehicle. The two-gear automatic gearbox comprises an input shaft, a first middle shaft, a second middle shaft, a first cylinder gear pair, a second cylinder gear pair, a third cylinder gear pair, a first torque transferring device, a second torque transferring device and a differential mechanism assembly, wherein the rotating central lines of the input shaft, the second middle shaft and the differential mechanism assembly are parallel to one another. The two-gear automatic transmission is adopted by the two-gear automatic gearbox, so that the driving ratio scope is widened, the performance demand on a driving motor is greatly reduced, the high-efficiency and light driving motor is allowed to be adopted, and the total volume, the total mass and the total cost of the two-gear automatic gearbox for the pure electric vehicle are further reduced.

The invention discloses an independent sound system of an automobile seat. The independent sound system comprises a headrest, sound boxes, a power amplifier and a sound source, wherein the power amplifier is correspondingly connected with the sound boxes and the sound source in a signal mode. The headrest comprises an intermediate pillow portion, and wing portions on the left and right sides of the pillow portion extending toward the front of the headrest, wherein a cavity for embedding each sound box is formed in each wing portion, and a central axis of each loudspeaker in each sound box anda central axis of the headrest form an angle of 60-120 degrees. According to the independent sound system of the automobile seat, the sound boxes are arranged at the left and right wing parts of the headrest close to a head of a driver / passenger, so that the left and right loudspeakers face and are close to the left and right ears of a person in a small range and a short distance to form a stereofield effect of 'open headphones' near field listening. At the same time, the independent sound boxes of other seats in the same automobile can be prevented from influencing each other, the pressure caused by wearing earphones is avoided, and the ' in-head effect' of earphones cannot be formed.

An electric car is composed of car body, electric driver unit, and electric accumulator unit and control system. It features that said car body has a wind driven electric generator and several solar cell boards connected electrically with said electric accumulator unit.

A copper foil reducing transmission loss at a high frequency and excellent in bond strength with a resin substrate, including at least a granular layer and a columnar layer in its thickness direction, the columnar layer being formed on at least one surface of the granular layer forming the copper foil or the granular layer being formed on at least one surface of the columnar layer forming the copper foil, the relation of the thickness A of the granular layer and the thickness B of the columnar layer in the copper foil being preferably A / (A+B)=40 to 99%, a method of production and apparatus for production for the same, and a high frequency circuit using the same.

The invention discloses an air conditioner, which comprises a cabinet-type indoor unit. The front upper part of the cabinet-type indoor unit is provided with an air outlet, the lower two sides and the bottom of the cabinet-type indoor unit are provided with air inlets, the cabinet-type indoor unit is provided with a sliding panel for opening and closing the front of the air outlet, the sliding panel is driven by a mechanical transmission device to descend or ascend, and the driving mechanism is a worm rack transmission pair. Because of the adoption of a simple transmission mode, the air conditioner can reduce the transmission loss and lower the cost on the premise of ensuring stable and uniform transmission.

The invention discloses a thin film piezoelectric sonic sensor. The thin film piezoelectric sonic sensor comprises a substrate layer, a ground electrode layer and a piezoelectric layer which are arranged in a laminated mode, and one or more transducers are arranged on the side, away from the ground electrode layer, of the piezoelectric layer; and photonic crystals at least formed in the piezoelectric layer are correspondingly arranged on the two sides of the transducers, and the resonant frequency of the thin film piezoelectric sonic sensor is located in band gaps of the photonic crystals. According to the thin film piezoelectric sonic sensor, the photonic crystals are at least arranged on the piezoelectric layer, the mechanical vibration stability of the piezoelectric layer is improved, the sonic wave reflectivity is improved, the energy loss of sonic wave transmission is lowered, and the quality factor of the sensor is improved. The invention discloses a photonic crystal. The photonic crystal comprises a matrix and a scatterer formed on the matrix, the matrix is formed by at least two media layers in a laminated mode, and materials of any one of the media layers are different from those of other media layers. According to the photonic crystal, the sonic wave energy loss can be effectively reduced, and the quality factor of the sensor can be effectively improved when the photonic crystal is applied to the thin film piezoelectric sonic sensor.

The invention discloses an electromobile variable speed driving system and an automatic variable speed control method. The electromobile variable speed driving system comprises a driving motor, a motor controller, a gear shifting controller and a multi-gear transmission, wherein a main shaft of the multi-gear transmission is connected with a rotating shaft of the driving motor through a gear transmission mechanism; one end of a variable speed hub of the multi-gear transmission is electrically connected with the gear shifting controller through a gear contact switch, and the other end of the variable speed hub is connected with a shaft of a gear shifting motor; and the gear shifting controller is electrically connected with the gear shifting motor, a rotating speed sensor of the driving motor, the gear contact switch and the motor controller. The automatic variable speed control for the electromobile variable speed driving system is realized through presetting the lower limit eta min of the working efficiency of the driving motor in a program of the gear shifting controller, comparing the calculated real-time operational efficiency eta c of the driving motor with the set lowest working efficiency eta min of the driving motor, and then controlling the gear shifting motor to drive the variable speed hub to drive the transmission to finish gear-up and gear-down actions.

The invention provides a sliding vane pump and a method using the sliding vane pump to convey fluid. The sliding vane pump is provided with a cylindrical pump casing, and the pump casing is internally provided with a driving shaft, a rotor sleeved on the driving shaft, and a sliding vane arranged on the rotor, wherein the sliding vane and an inner cavity of the pump casing are sealed in a contact manner; an end cover is arranged at the end part of the pump casing; the sliding vane pump further has a sliding vane pump suction port and a sliding vane pump discharge port; and the sliding vane pump suction port and / or the sliding vane pump discharge port are located on the end cover of the pump casing. The invention further provides a sliding vane pump, and the sliding vane pump includes a plurality of cylindrical pump casing, and has a sliding vane pump suction port and a sliding vane pump discharge port; the sliding vane pump suction port and / or the sliding vane pump discharge port are respectively located on the end cover; and fluid transfer openings penetrating the upper end surfaces and the lower end surfaces of partitions are arranged on the partitions. According to the method using the sliding vane pump, the fluid is sucked and / or discharged in the direction of the end part of the pump casing so as to pump.

A linear gear shift mechanism for chainless vehicles includes a gear shift unit having a support rotator, transmission balls and driving posts, with the transmission balls disposed in the support rotator, with a cylindrical receiving portion disposed on each transmission ball radially, with the driving posts disposed in the cylindrical receiving portions along radial direction of the support rotator and rotating from radial direction thereof to but not reach axial direction of the support rotator; an axial power input rotator having an inward-tilted power input annular surface; an axial power output rotator having an inward-tilted power output annular surface, with the transmission balls clamped between inward-tilted power input and output annular surfaces and support rotator; a tread-required transverse power source meshing with axial power input rotator; an axial power transfer portion meshing with axial power output rotator axially; a transverse power output portion meshing with axial power transfer portion.

A preform (15) having a clad part of PVDF and a core part of PMMA is manufactured. The preform (15) is partially heated in a heating furnace (74) of 240° C. The preform (15) is subject to the melt-drawing process to form a plastic optical fiber (17). The drawing tension to the preform (15) is measured by use of a drawing tension measure device (76). Based on the measured value, a drawing roller pair (78) adjusts the drawing tension to be 3.8 MPa. The plastic optical fiber (17) is fed via a dancer roller (82) and rollers (84, 86) toward a bobbin (87) to wind the plastic optical fiber (17). A winding tension measure device (85) measures the winding tension to the POF (17). Based on the measured value, the dancer roller (82) changes its position to adjust the winding tension to be 2.5 MPa.

An integrated DWDM receiver apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The substrate includes a silica layer overlying a silicon layer and includes a first surface region and a second surface region. An optical demultiplexer is disposed within the silica layer under the first surface region and overlying the silicon layer. The optical demultiplexer includes a plurality of output waveguides and at least an input waveguide. The receiver apparatus includes one or more reflecting structures located in the silica layer under the second surface region. Each of the reflecting structures is optically coupled to a corresponding output waveguide. The receiver apparatus also includes one or more semiconductor photodetector array chips overlying the second surface region of the silica-on-silicon substrate. Each of the one or more photodetector array chips including one or more photodetectors which is optically coupled to a corresponding reflecting structure.

An optical fiber has a plurality of holes in a cladding around a core, and has a high failure strength and small transmission loss. The core is made of glass. The cladding surrounds the core, and the holes are formed in the cladding so as to extend along a central axis of the fiber. The holes are formed with constant intervals therebetween along a circle centered on the core, and each hole has a substantially circular cross section. The cladding is sectioned into two claddings. A residual stress in an inner region that is inside a circumcircle of the holes is a compressive stress.

An integrated DWDM transmitter apparatus includes a support component and a silica-on-silicon substrate overlying the support component. The support component includes a temperature adjustment component. The silica-on-silicon substrate overlies the support component and includes a silica layer and a silicon layer. The silica-on-silicon substrate includes a corresponding a substrate surface which includes a first surface region and a second surface region. In an embodiment, the two surface regions are not coplanar. The transmitter apparatus includes an optical multiplexer within the silica layer, the optical multiplexer including a plurality of input waveguides and at least an output waveguide. The transmitter apparatus also includes one or more semiconductor laser array chips overlying the first surface region of the silica-on-silicon substrate. Each of the laser array chips including two or more lasers, which are optically coupled to corresponding ones of the plurality of input waveguides.

A two-gear automatic transmission for a battery electric vehicle comprises an input shaft, an intermediate shaft, a first cylindrical gear pair, a second cylindrical gear pair, a third cylindrical gear pair, a first torque transfer device, a second torque transfer device and a differential assembly. The rotating central lines of the input shaft, the intermediate shaft and the differential assembly are mutually parallel. A driving motor, an automatic transmission and a driving bridge are integrated to form a whole, a transmission ratio range is widened, the performance requirement of the driving motor is remarkably reduced, the two-gear automatic transmission is simple and compact in structure, light in weight, stable in transmission and wide in transmission ratio range and has very high power transfer efficiency, energy consumption level is reduced, the power performance and economical efficiency of the whole vehicle are improved, and manufacturing cost is remarkably reduced.

A trench optical fiber that stably realizes a small transmission loss includes (1) a core extending in an axial direction while containing an axial center of the fiber, the core having a diameter d1 of 7.0 μm to 7.4 μm; (2) a first optical cladding layer surrounding the core and having an outside diameter d2 of 1.67d1 to 2.5d1; (3) a second optical cladding layer surrounding the first optical cladding layer; and (4) a jacket layer surrounding the second optical cladding layer and containing fluorine having a concentration of 0.06 wt % or higher. A relative refractive index difference Δ1 of the core with respect to the jacket layer is 0.31% to 0.37%. A relative refractive index difference Δ2 of the first optical cladding layer with respect to the jacket layer is +0.02% or larger and smaller than Δ1. A relative refractive index difference Δ3 of the second optical cladding layer with respect to the jacket layer is −0.2% or smaller.