摘要:
An optical module comprises: a sub-mount 1, having four photodiodes 12 and two guide grooves 10 disposed on an optical element mounting surface 16; a fiber fixing member 2, having four V-grooves 21, four concave mirrors 22, and two guide rails 20 disposed on an optical fiber fixing surface 26; and four optical fibers 3, fixed to the fiber fixing member 2. With this optical module, the sub-mount 1 and fiber fixing member 2 are aligned and fixed by the fitting together of the guide grooves 10 and guide rails 20. A passive alignment type optical module that enables mass production and cost reduction is thus realized.
摘要:
A BGA semiconductor device for high-speed operation and high pin counts has a base which is constituted by a core layer formed of wiring boards and surface layers provided on both sides of the core layer, and a semiconductor element mounted on the base. Through holes in a signal region of the core layer are disposed in an optimum through hole pattern in which power through holes and ground through holes are disposed adjacent to signal through holes.
摘要:
A squib connector assembly for energizing a gas producer to make it ignite, the squib connector assembly comprising a first component for supporting a male electrical connector element; a second component for supporting a female electrical connector element engageable with the male electrical connector element; and a short-circuit element selectively switchable between a short-circuit position to electrically short-circuit the male electrical connector element and a non-short-circuit position. A flat-plate-like noise filter having electromagnetic wave absorbing material is arranged between the first component and the short-circuit element, so as to allow the male electrical connector element to extend through it and surround the male electrical connector element. This can provide the squib connector assembly that can adequately meet the demand for miniaturization and space saving.
摘要:
The present invention aims to prevent forcing of pins when a female connector is obliquely inserted into a shunt. A shunt fits into a cylindrical socket concavely formed in an external face of a housing of an airbag inflator and short-circuits of a pair of contact pins of a squib of the inflator. These pins rise at the center of the socket from the bottom to a point near to the opening. The shunt includes an annular wall having a fitting hole into which the pins enter from the bottom side of the center thereof and into which a female connector fits from the top side, and a short-circuit piece provided on the annular wall, which will contact both of the pins when the shunt is fitted into the socket, and will be pushed to move away from the pins when the female connector is fitted into the fitting hole. To prevent forcing or bending of the pins if the female connector is improperly obliquely inserted into the fitting hole of the shunt, the height of the annular wall is not less than the sum of the depth of insertion of the female connector into the fitting hole in the axial direction of the pins when the female connector is inserted obliquely plus the height of the pins from the bottom of the socket.
摘要:
A semiconductor integrated circuit includes a semiconductor chip; an inner cell region; a plurality of input/output cell regions which are located around the inner cell region, and a plurality of pads which are provided between the plurality of input/output regions and sides of the semiconductor chip. Each unit area of the plurality of input/output cell regions is assigned to a corresponding input/output cell so as to be just sufficient for the corresponding input/output cell.
摘要:
A process for separating and recovering serum and plasma components from a whole blood sample including passing a whole blood sample through a separating filter formed of a blood cell separating layer composed mainly of fibers impregnated with a coating agent. A device includes a blood collector having a needle at one end and a blood suction means at the other end, and a separating filter including a blood cell separating layer, the filter being provided in the intermediate zone of the blood collector, whereby a whole blood sample sucked through the needle by depressurizing the blood suction means is passed through the separating filter.
摘要:
An electromagnetic wave device having an amplification function comprises a medium containing free carriers, means for applying a magnetic field to the medium, means for applying an input electromagnetic wave to the medium in a direction perpendicular to the magnetic field, and means for generating an electric field to accelerating the carriers in the direction of the input electromagnetic wave. A frequency of the input electromagnetic wave is within the range of the plasma frequency plus or minus the cyclotron frequency, and a polarization direction of the input electromagnetic wave is perpendicular both to the magnetic field and its own traveling direction. Furthermore, the device has such functions as oscillation, modulation, frequency conversion, etc. depending on the type of added units.
摘要:
A fish is bred in a transparent basin, into which water to be tested is supplied. A light source and a television camera are arranged in such a manner that images of the fish are taken by the camera as a silhouette. From the thus obtained fish images, the frequency distribution of the gravity centers of the fish images in the direction of the depth of water are obtained. The abnormality of the behavior of the fish is detected by comparison of the obtained frequency distribution with a reference distribution provided in advance.
摘要:
An electrochromic light regulator for adjusting or regulating the amount of light passing therethrough comprises first, second and third electrode units stacked one above the other in spaced manner. A space between each adjacent two of the first to third transparent electrode units contains an electrochromic material and an ion conducting and electrically insulating layer. The second transparent electrode unit which is positioned intermediately between the first and third transparent electrode units serves as a counter electrode common to the first and third transparent electrode means.
摘要:
An aperture stop control device for a zoom lens system includes a variable aperture stop, a first sensor for determining the diameter of the aperture stop and providing a first electrical signal representative of the diameter of the aperture stop means and a second sensor for generating a second electrical signal indicative of a designated F number. A signal generator provides a third electrical signal indicative of the focal length of the zoom lens system. A computing circuit computes an output electrical signal as a function of the second and third electrical signals to control the diameter of the aperture stop for automatically maintaining a designated F number during a zooming operation.