摘要:
A buried structure avalanche multiplication photodiode (APD) is provided with a surface level difference between the multiplication region and guard ring region. The APD has a so-called separated absorption and multiplication region structure comprising an n-InGaAs light absorbing layer and an n-InP multiplication layer. The surface level difference is provided by selective growth of the layer in which the guard ring is formed or selective removal of the layer over the multiplication region. In the APD, the pn junction is level throughout the multiplication region and guard ring region or is made farther apart from the light absorbing layer in the guard ring region than in the multiplication region, and a significant reduction of dark current due to tunneling current in the InGaAs layer and/or InGaAsP layer is obtained. Moreover, the breakdown voltage difference of the pn junction in the multiplication region and the guard ring region has also been increased.
摘要:
A method and apparatus for automatically producing a wire harness. A plurality of wiring blocks are arranged on a workbench. Each wiring block has a wire clamping section, a wire cutting section, and a terminal press attaching section. The wire cutting section and the terminal press attaching section can be separated from the wire clamping section. This structure makes it possible to automate a series of operations including wire cutting, wire peeling, and terminal attaching operations.
摘要:
A copolymer comprising (a) vinyl chloride or a mixture of vinyl chloride and a monomer copolymerizable therewith and (b) 1,2-polybutadiene oligomer and/or epoxidized 1,2-polybutadiene oligomer. The plasticized copolymer can be molded into soft moldings having a low compression set and high tensile and tear strengths. Also, by the incorporation of the copolymer into vinyl chloride homopolymer or copolymers, hard moldings having delustered surface can be obtained without conducting delustering operation.
摘要:
A process for stabilizing an aqueous solution of an acrylic or methacrylic hydrazide polymer by adding to the aqueous solution, at least an equal amount of hydrazine hydrate and/or a water-soluble alkaline earth metal salt of an inorganic acid based on the weight of the acrylic or methacrylic hydrazide polymer.
摘要:
A reed switch glass tube is capable of preventing, for example, chipping and cracking of end parts thereof by forming a compressive stress layer having a length (A) from an end face within a range of 0.1 mm to 0.6 mm on an outer circumference surface of the end part of the glass tube.
摘要:
A pressure regulating valve includes a device body and an actuator. The device body includes a valve seat member, a valve, which is capable of closing the first opening of the valve seat member, an urging member, which urges the valve toward the valve seat member, a piston arranged opposite to the valve across the valve seat member, an actuator, which adjusts the position of the piston, and a protrusion provided on at least one of the piston and the valve. When the tip end of the protrusion comes into contact with the piston or the valve, the second opening of the second fluid passage is closed. When the tip end of the protrusion is not in contact with any of the piston and the valve and the second opening is opened, the second fluid passage is in communication with the pressure regulation chamber.
摘要:
A solid-state imaging apparatus includes a first substrate that includes a plurality of photoelectric conversion units, a second substrate that includes at least a part of a readout circuit configured to read signals based on electric charges of the plurality of photoelectric conversion units and a peripheral circuit including a control circuit, and a wiring structure that is disposed between the first substrate and the second substrate and includes a pad portion electrically connected to the peripheral circuit via a draw-out wiring and an insulating layer. The wiring structure has, at least at a part thereof, a seal ring disposed in such a way as to surround the photoelectric conversion units and the peripheral circuit.
摘要:
One of disclosed embodiments provides a photoelectric conversion device, comprising a member including a first surface configured to receive light, and a second surface opposite to the first surface, and a plurality of photoelectric conversion portions aligned inside the member in a depth direction from the first surface, wherein at least one of the plurality of photoelectric conversion portions other than the photoelectric conversion portion positioned closest to the first surface includes, on a boundary surface thereof with the member, unevenness having a difference in level larger than a difference in level of unevenness of the photoelectric conversion portion positioned closest to the first surface, and wherein the boundary surface having the unevenness is configured to localize or resonate light incident on the member from a side of the first surface around the boundary surface having the unevenness.
摘要:
A solid-state image pickup apparatus includes a photoelectric conversion unit, a charge storage unit, and a floating diffusion unit, all disposed on a semiconductor substrate. The solid-state image pickup apparatus further includes a first gate electrode disposed on the semiconductor substrate and extending between the photoelectric conversion unit and charge storage unit, and a second gate electrode disposed on the semiconductor substrate and extending between the charge storage unit and the floating diffusion unit. The solid-state image pickup apparatus further includes a light shielding member including a first part and a second part, wherein the first part is disposed over the charge storage unit and at least over the first gate electrode or the second gate electrode, and the second part is disposed between the first gate electrode and the second gate electrode such that the second part extends from the first part toward a surface of the semiconductor substrate.
摘要:
This invention provides an image processing method which for noise reduction and sensitization for an ordinary video camera. The noise reduction processing locates a bright pixel and averages brightness by adding the pixel accumulated by ratio in accordance with the geometric series, and to a dark pixel, carrying out the processing of noise reduction which averages brightness by adding the pixel accumulated by ratio in accordance with the geometric series and the processing of sensitization in the condition that a magnification of intensification is greater than 1, determine that the pixel moves or not, if the pixel is moving, it is used to carry out processing of sensitization only, and if the pixel is still, choose it is used to carry out the processing of sensitization and noise reduction.