摘要:
A four-stroke engine for a working machine with a rod is provided, where a tool is attached to one end of the rod in a longitudinal direction and the four-stroke engine is fixed to the other end of the rod in use. The four-stroke engine includes: an oil circulation pathway; and a gas-liquid separating chamber configured to separate oil from blowby gas. The gas-liquid separating chamber includes: an inflow part into which the blowby gas is introduced from the oil circulation pathway; oil discharge parts configured to flow the oil separated from the blowby gas back to the oil circulation pathway; and a blowby gas discharge part configured to discharge the blowby gas not containing oil mist from the gas-liquid separating chamber and supplies the blowby gas to an intake passageway to a combustion chamber.
摘要:
It is an object to form a conductive intermediate layer having a function of maximally preventing a solder leaching phenomenon with a low environment load and with good productivity.There are provided an insulative base material 2, a wiring circuit pattern 3 formed on at least one surface of the insulative base material 2, an electronic part mounting land 31 which is formed as part of the wiring circuit pattern 3 and on which an electronic part 7 is to be mounted, and a conductive intermediate layer 5 made of a sintered conductive ink film on the electronic part mounting land 31.
摘要:
To peel an etching resist easily and reliably without damaging a transparent conductive layer coated with the etching resist. A method for manufacturing a transparent printed circuit in an embodiment of the present invention includes: providing a transparent conductive sheet 3 having a transparent base material 1 and a transparent conductive layer 2 formed on the transparent base material 1, forming an etching resist 4 having a specified pattern on the transparent conductive layer 2, etching the transparent conductive layer 2 with the etching resist 4 as a mask, forming a peeling film 5 on the etching resist 4 and on the transparent base material 1 exposed by etching of the transparent conductive layer 2 so as to cover an area where the etching resist 4 is formed, and peeling the peeling film 5 together with the etching resist 4.
摘要:
The present invention provides a connector unit that can surely position and connect a plurality of optical fiber plugs in a short time and easily release a connected state of optical fiber connectors even if the number of optical fiber connectors increases. A connector unit includes a positioning member for positioning a plurality of optical fiber plugs, an adapter that has plug guide holes for inserting tip ends of the optical fiber plugs to connect with the optical fiber plugs, and guide portions for guiding the positioning member with respect to the adapter and inserting the tip ends of the optical fiber plugs into the plug guide holes of the adapter to connect with the optical fiber plugs.
摘要:
An optical component provided with a waveguide groove having, an waveguide holding plane having a surface shape extending along a specified axial direction and capable of holding at least one optical waveguide while positioning it at at least a part of at least one side face thereof; and an opening extending substantially oppositely to the waveguide holding plane and being smaller in width than the outside diameter of at least one optical waveguide in a specified widthwise direction perpendicular to the specified axial direction.
摘要:
An optical module, in which an optical device can be mounted and repaired without damaging an electrode on an electronic device side, is provided. A photodiode (1) and a pre-amplifier IC (2) are mounted on a base (stem) (4), and except for that, a relay terminal table (7) is provided. The photodiode (1) and the pre-amplifier IC (2) are connected through the relay terminal table (7) by means of bonding wires (3a, 3b). The relay terminal table (7) is connected via the bonding wire (3a) to an electrode (11) of the photodiode (1), as well as via the bonding wire (3b) to an electrode (12) of the pre-amplifier IC (2). In repairing the photodiode (1) only the bonding wire (3a) is removed for re-wiring, so that the electrode (12) of the pre-amplifier IC can be prevented from being damaged.
摘要:
An optical module comprises a substrate (2), formed with wiring patterns for electrical signals and having a mounting surface (2b) mounted with one or more semiconductor optical elements (4), and a package (7, 8) in which the substrate (2) is located. The substrate (2) is formed with at least one first positioning section (2c), the package (7) is formed of a synthetic resin and includes a disposition section (7e) in which one or more optical waveguide components are opposed to the semiconductor optical elements (4), and a second positioning section (7g) adapted to engage the first positioning section, thereby positioning the semiconductor optical elements and the disposition section.
摘要:
A semiconductor laser device comprising a semiconductor substrate, a multi-layered double heterostructure having active layers, a pair of cladding layers, a ridged waveguide structure and a current confining structure formed between the semiconductor substrate and the active layer. With such an arrangement, injected current is narrowed not only on the side above the ridge of the active layer but also on the substrate side of the active layer to improve the threshold current and its current confinement performance. When the two lateral trenches of the ridge are embedded with resin layers, the ridge stripe width can be made narrow to improve the threshold current of the device. When the active layer is realized in a DCC structure having two active layers and having an intermediary clad layer sandwiched therebetween, the device will show a low threshold current circular beam divergence and stabilized thermal characteristics.
摘要:
Provided is a connector unit capable of surely positioning and cone ting a plurality of optical fiber plugs in a short time and easily releasing the connected state of the optical fiber connectors even if the quantity of the optical fiber connectors is increased. The connector unit (10) comprises a positioning member (12) for positioning a plurality of optical fiber plugs (11), an adapter (13) with plug guide hole parts (20) into which the tip ends of the optical fiber plugs (11) we inserted for connection with each other, and guide parts (14) for guiding the positioning member (12) relative to the adapter (13) and inserting the tip ends of the optical fiber plugs (11) into the plug guide hole parts (20) of the adapter (13) for connection with each other.
摘要:
A printed wiring board includes a plurality of conductor plates that includes at least one conductor plate that is used as a lead for electrical connection with an external circuit, the conductor plates being separated spatially from one another; an insulating layer formed on or across the conductor plates or both on and across the conductor plates; and a plurality of wiring patterns formed on the insulating layer. At least one of the conductor plates is electrically connected with at least one of the wiring patterns through a via-hole.