Abstract:
In a semiconductor laser element, a lower cladding layer of AlGaInP of the first conductive type, a lower optical waveguide layer of AlGaInP, a quantum-well active layer of InGaP, an upper optical waveguide layer of AlGaInP, and an upper cladding layer of AlGaInP of the second conductive type are formed in this order on a substrate of GaAs of the first conductive type. The degree of mismatch Δa/a with the substrate and the thickness dw of the quantum-well active layer satisfy the conditions, −0.6%≦Δa/a≦−0.3% and 10 nm≦dw≦20 nm. In addition, the resonator length Lc and the reflectances Rf and Rr of the opposite end facets satisfy the conditions, Lc≧400 μm and Rf×Rr≧0.5.
Abstract:
A throttle body (2) includes a resin main body (3) defining a bore (7) through which intake air flows, a valve body (60) having a shaft part (20) rotatably supported by the resin body (3) and a valve part (4) for opening and closing the bore (7) of the main body (3), and a resin cover body (40) attached to the main body (3). The cover body (4) is attached to the main body (3) by welding.
Abstract:
A semiconductor layer contains, as a principal constituent, a Group III-V semiconductor compound, which may be represented by the general formula: AlxGayInzN, wherein x represents a number satisfying the condition 0≦x
Abstract translation:半导体层含有作为主要成分的III-V族半导体化合物,其可以由以下通式表示:其中Z 1,Y 2, N,其中x表示满足条件0 <= x <1的数,y表示满足条件0
Abstract:
A throttle control apparatus comprises a throttle valve placed in an intake passage, a motor for driving the throttle valve, an electronic control unit (ECU) for controlling the motor, and a throttle sensor for detecting an actual opening degree of the throttle valve. The ECU determines that the throttle valve is frozen when the actual opening degree does not reach a target opening degree even after a driving time for driving the motor has exceeded a predetermined time, and then stores the actual opening degree at the time as an icing opening degree. The ECU supplies a driving duty to cause the motor to produce required driving torque for removal of icing and reverses the driving duty by open control, and controls the motor to bring an accumulated value of a deviation between the target opening degree and the icing opening degree to zero, thereby repeatedly swinging the throttle valve.
Abstract:
Provided are a long-life light emitting device less likely to degrade luminescence properties over time, a method for manufacturing the same, and a cell for a light emitting device used for the same. A light emitting device 1 includes a cell 10 and a luminescent material encapsulated in the cell 10. The cell 10 includes a pair of glass sheets 12 and 13 and a glass-made fused part 14a. The pair of glass sheets 12 and 13 are disposed to face each other with a space therebetween. The fused part 14a is disposed between respective peripheral portions of the pair of glass sheets 12 and 13. The fused part 14a is fused to each of the pair of glass sheets 12 and 13.
Abstract:
Provided is a method whereby a cell for a light-emitting device less variable in the thickness of the internal space can be suitably produced with high production efficiency. A glass-made fused part forming element (25) is provided in a grid-like pattern between a pair of glass sheet base materials (21, 24) disposed facing each other with a space therebetween. The fused part forming element (25) is fused to each of the pair of glass sheet base materials (21, 24) to produce a cell base material (30) having a grid-like fused part (26). The cell base material (30) is cut along each of row and column directions of the grid-like fused part (26) to produce a plurality of light-emitting devices (1). Portions off the grid-like fused part forming element (25) along a first direction are formed of glass ribbons (22) and portions of the grid-like fused part forming element (25) along a second direction are formed of glass paste.
Abstract:
The present invention can further increase the efficiency of light extraction from the light exit surface of a light-emitting device. A cell (10) for a light-emitting device includes: a first main wall (10a) and a second main wall (10b) which are disposed facing each other with a distance therebetween; and a sidewall (10c). The sidewall (10c) connects the first main wall (10a) and the second main wall (10b). The sidewall (10c) defines, together with the first and second main walls (10a, 10b), an internal space (10A) into which a luminescent substance is to be encapsulated. A portion of the sidewall (10c) located laterally of the internal space (10A) is white.
Abstract:
A photo detecting device comprises a photo-electron generating body, which absorbs light and generates photo-electrons, and a transistor, across which an electric current flows in accordance with a quantity of the photo-electrons having been generated by the photo-electron generating body. An electrical insulator is formed on a surface of the photo-electron generating body. The transistor is provided with a source electrode and a drain electrode, which are formed on the electrical insulator having been formed on the surface of the photo-electron generating body. The source electrode and the drain electrode of the transistor are connected with each other via a channel section containing a nano-tube having electrically conductive or semi-conductive characteristics.
Abstract:
A semiconductor laser has a first conduction type clad layer, an active layer and a second conduction type clad layer formed on a first conduction type semiconductor substrate in this order. An inverted mesa-shaped ridge is formed on a part of the second conduction type clad layer and a first conduction type current stopping layer is formed on each side of the ridge. Each side of the inverted mesa-shaped ridge is curved into a concave surface in a plane perpendicular to the longitudinal direction of the ridge.
Abstract:
A composition comprising (a) an organopolysiloxane having a unit of the formula: RSiO.sub.3/2 wherein R is a substituted or unsubstituted monovalent C.sub.1-10 hydrocarbon group in its molecule and having at least 0.05 alkenyl groups each directly attached to a silicon atom per silicon atom, (b) an organohydrogenpolysiloxane having at least 2 hydrogen atoms each directly attached to a silicon atom per molecule, and (c) a platinum catalyst, maintains good light transmission in cured form when exposed to humidity or stresses and is thus suitable for forming cores of optical fibers.