摘要:
A grating (3) including first and second regions (B1 and B2) through which the light beams, having wavelengths λ1 and λ2, respectively, pass, each of the regions including a region having diffraction grooves whose concavoconvex pitches are partially shifted so that a pattern is provided to cause each of the first and second light beams to have a partial phase shift. The pattern is set so that amplitudes of push-pull signals of the sub-beams are substantially cancelled in each of the light beams having different wavelengths. With this, it is possible to provide an optical pickup (i) having a plurality having different light sources in one package, (ii) capable of realizing low cost in the case in which the optical pickup carries out track detection using three beams with respect to any optical discs, such as DVDs and CDs, and (iii) capable of realizing simplifications of assembly adjustment and the pickup.
摘要:
A method for forming a low dielectric constant film includes the steps of: introducing reaction gas comprising an organo Si gas and an inert gas into a reactor of a capacitively-coupled CVD apparatus; adjusting a size of fine particles being generated in the vapor phase to a nanometer order size as a function of a plasma discharge period inside the reactor; and depositing fine particles generated on a substrate being placed between upper and lower electrodes inside the reactor while controlling a temperature gradient between the substrate and the upper electrode at about 100° C./cm or less.
摘要:
A renaming apparatus configured to set a correspondence between a physical register number and a logical register number. The apparatus includes a control register configured to store the correspondence between the physical register number and the logical register number and a control register setting part configured to set the control register in accordance with the content of an instruction, when an instruction for setting the correspondence between the physical register number and the logical register number is included in the issued string of instructions.
摘要:
Part of light emitted downward by an active layer is reflected by an electrode functioning as a reflective layer, and travels upward to radiate outside. Since the electrode is made of a metal, it reflects almost all light regardless of its incident angle, and light can be efficiently extracted.
摘要:
A semiconductor light emitting element and a semiconductor light emitting device, which are high in optical output, uniform in emission of light and high in production yield and productivity, comprise: an electrically conductive transparent substrate having a first surface and a second surface opposed to each other; a semiconductor epitaxial layer formed on a location of the first surface of the substrate; a first electrode formed on the semiconductor epitaxial layer; a second electrode formed on a location of the second surface of the substrate offset from alignment with the first electrode; and a groove formed to indent from the second surface of the substrate toward the first surface in a location between the first electrode and the second electrode.
摘要:
A semiconductor light-emitting device, including a first substrate of a first conductivity type, a first bonding layer provided on said first substrate and consisting essentially of a GaP material of the first conductivity type, a second bonding layer provided on the first bonding layer, coincident with the first bonding layer in a crystal orientation, having the first conductivity type, and consisting essentially of a material represented by a formula InxGayP, where 0≦x, y≦1, and x+y=1, and a light-emitting layer comprising a first cladding layer, an active layer, and a second cladding layer, which are successively provided on the second bonding layer, each of the active layer and first and second cladding layers consisting essentially of a material represented by a formula InxGayAlzP, where x+y+z=1, and 0≦x, y, z≦1.
摘要翻译:一种半导体发光器件,包括第一导电类型的第一衬底,设置在所述第一衬底上并基本上由第一导电类型的GaP材料组成的第一接合层,设置在第一接合层上的第二接合层, 与具有第一导电类型的晶体取向的第一结合层重合,并且基本上由由式InxGayP表示的材料组成,其中0 <= x,y <= 1和x + y = 1,以及光 依次设置在第二接合层上的包含第一包层,有源层和第二包覆层的发光层,所述有源层和第一和第二包层中的每一个基本上由式In x Ga y Al z P ,其中x + y + z = 1,0 <= x,y,z <= 1。
摘要:
When an image is adjusted to compensate for individual differences among image forming units, there are cases where a phenomenon occurs in which a contour that is originally non-existent appears in a low-density portion, namely an area other than that where the output density characteristic is linear. In such instances image quality deteriorates markedly when importance is placed upon tonality. To solve this problem, a printer is caused to print an image diagnostic pattern, the image diagnostic pattern that has been printed is read by a reader and the linear portion of the output density characteristic of a design center value and the linear portion of the read output density characteristic are approximated by straight lines. Both of the output density characteristics are compared and image adjustment coefficients A, B are compared. The coefficients A, B thus obtained are set in a primary converter and gamma tables in a gamma converter are changed over in conformity with the values of the coefficients A, B.
摘要:
A method for taking custody of, transporting and installing an air conditioner having an outdoor unit which uses a flammable refrigerant and includes a refrigeration cycle comprising a compressor, an expansion device and an outdoor heat exchanger which are connected to one another through pipes, wherein the outdoor unit is shipped from a factory while the refrigeration cycle is evacuated to produce a vacuum, the outdoor unit is kept in custody and transported in a state in which the vacuum in the refrigeration cycle is maintained, and when the outdoor unit is installed, the flammable refrigerant is charged into the refrigeration cycle. With this structure, it is possible to provide a method for taking custody of, transporting and installing an apparatus having a refrigeration cycle in which safety is assured when the apparatus having the refrigeration cycle is being transported or kept in custody, the efficiency of the disposing operation is enhanced, and a problem such as deterioration of performance is not generated.
摘要:
A current blocking layer (7) formed immediately below a transparent electrode (9) is formed of a semiconductor layer containing Al, and a bandgap equal to or longer than the emission wavelength. Since the current blocking layer (7) is formed of such semiconductor layer, an oxide film forms on or near the surface of the current blocking layer (7) in a process of forming the transparent electrode (9) such as an ITO film containing oxygen, and the current blocking layer functions effectively. The diameter of a bonding electrode (20) is set to be smaller than that of the current blocking layer (7), thus effectively outputting the light emitted. Furthermore, the oxidized current blocking layer can have a high breakdown voltage and, hence, can be formed to have a small thickness, thus improving step coverage upon forming the transparent electrode on the current blocking layer. By inserting a thin Zn layer (8) between the transparent electrode (9) and an ohmic layer (6), the adhesion therebetween can be improved.
摘要:
For use in a copying apparatus or the like, there is provided an image heating apparatus having a first heater, a second heater, and a power supply control device for controlling the power supply to the first and second heaters, wherein the power supply control unit is adapted, in case of power supply to both of the first and second heaters, to at first start power supply to the first heater and then to the second heater, and, in case of power supply again to both of the first and second heaters, to at first start power supply to the second heater and then to the first heater.