Abstract: The present invention relates to a low-resistance MCP with an expanded dynamic range and excellent environment resistance, in comparison with the conventional technology. The MCP has a double structure composed of hollow first cladding glasses whose inner wall surfaces function as channel walls, and a second cladding glass having a resistivity lower than that of the first cladding glasses.

Abstract: The present invention relates to an MCP with sufficient physical strength and high detection efficiency. The MCP has a double cladding structure composed of first cladding glasses each of which has a through hole serving as a channel, and a second cladding glass having a high acid resistance and employing a honeycomb structure. In an entrance end face each first cladding glass has a tapered opening.

Abstract: The present invention relates to a low-resistance MCP with an expanded dynamic range and excellent environment resistance, in comparison with the conventional technology. The MCP has a double structure composed of hollow first cladding glasses whose inner wall surfaces function as channel walls, and a second cladding glass having an acid resistance lower than that of the first cladding glasses.

Abstract: The present invention relates to a low-resistance MCP with an expanded dynamic range and excellent environment resistance, in comparison with the conventional technology. The MCP has a double structure composed of hollow first cladding glasses whose inner wall surfaces function as channel walls, and a second cladding glass having an acid resistance higher than that of the first cladding glasses.

Abstract: The present invention relates to an MCP with sufficient physical strength and high detection efficiency. The MCP has a double cladding structure composed of first cladding glasses each of which has a through hole serving as a channel, and a second cladding glass having a high acid resistance and employing a honeycomb structure. In an entrance end face each first cladding glass has a tapered opening.

Abstract: The present invention relates to a low-resistance MCP with an expanded dynamic range and excellent environment resistance, in comparison with the conventional technology. The MCP has a double structure composed of hollow first cladding glasses whose inner wall surfaces function as channel walls, and a second cladding glass having a resistivity lower than that of the first cladding glasses.

Abstract: A test apparatus that judges pass/fail of a signal under measurement, comprising a frequency counter that repeatedly performs a counting step of counting the number of pulses of a reference signal whose period is known and the number of pulses of the signal under measurement in parallel within the same measurement period; an average period calculating section that calculates, for each counting step, an average period of the signal under measurement within the measurement period, based on a period of the reference signal and a ratio between the number of pulses of the signal under measurement and the number of pulses of the reference signal counted within the same measurement period; a noise calculating section that calculates spread of the average periods calculated by the average period calculating section; and a judging section that judges pass/fail of the signal under measurement based on the spread of the average periods.

Abstract: Provided is a signal output circuit that outputs a signal, comprising an output circuit that changes a characteristic of a signal output therefrom according to a change in power supply voltage supplied thereto and a control signal supplied thereto; and a control section that changes the control signal to compensate for a change in the characteristic due to a change in the power supply voltage.

Abstract: An optical module socket includes a base on which an optical module is mounted; descend/ascend means which is ascendably and descendably provided in the base and on which the optical module is mounted; holding means for holding the optical module in a predetermined state; pogopins provided in the base to connect with leads of the optical module; and positioning means of optical transmission means which are provided in the holding means and the descend/ascend means and which position, to the optical module, an optical connector to be connected to the optical module.

Abstract: A hermetically sealing member with an optical transmission means transmits an optical signal economically and practically between the inside and the outside of a shielding member covering a printed-circuit board while sustaining the hermetically sealed state certainly. An optoelectronic device and an optical transmission method are also provided. A hermetically sealing member with an optical transmission means includes a gasket body fixed between a printed-circuit board and a sealing face of a shielding member, and a tape fiber formed integrally with the gasket body.

Abstract: A hermetically sealing member with an optical transmission means transmits an optical signal economically and practically between the inside and the outside of a shielding member covering a printed-circuit board while sustaining the hermetically sealed state certainly. An optoelectronic device and an optical transmission method are also provided. A hermetically sealing member (1) with an optical transmission means includes a gasket body fixed between a printed-circuit board and a sealing face of a shielding member, and a tape fiber formed integrally with the gasket body.

Abstract: An optical module socket 1 comprises: a base 2 on which an optical module 10 is mounted; descend/ascend means 4 which is ascendably and descendably provided in the base 2 and on which the optical module 10 is mounted; holding means 3 for holding the optical module 10 in a predetermined state; pogopins 21 provided in the base 2 to connect with leads 11 of the optical module 10; and positioning means of optical transmission means 31, 41 which are provided in the holding means 3 and the descend/ascend means 4 and which position, to the optical module 10, an optical connector 90 to be connected to the optical module 10.