摘要:
A light transmission module is disclosed, having a light receiving element module, in which a photodiode and a coupling portion between the photodiode and a first optical fiber are hermetically sealed, and a light emitting element module, in which a laser diode driven by an electric signal and a coupling portion between said laser diode and a second optical fiber are also hermetically sealed. A two-sided print board is provided, on the two sides of which electric circuits for a transmitting system and a receiving system are mounted. The electric circuits for the transmitting and receiving circuits are; isolated electrically from each other, and are sealed in one body by molds, and accommodated in cases, together with the light receiving element module and the light emitting element module.
摘要:
In a method for checking for leakage from tubular batteries, when tubular batteries are fed with their respective axial centers aligned in parallel to each other to pass through a leakage check mechanism, a sealed end face of the tubular batteries is irradiated with an X-ray. In accordance with the result of analysis on whether the incident fluorescent X-ray entering a detector contains a fluorescent X-ray associated with an electrolyte component, it is determined whether the tubular batteries have leaked. A length of a detection window of the detector in a direction of feed of the tubular batteries is set to be less than a spacing between the tubular batteries. A length of the detection window oriented orthogonal to the direction of feed is set to be greater than an outer size of the cross-sectional shape of the tubular batteries oriented orthogonal to their axial center.
摘要:
In a method for checking for leakage from tubular batteries, when tubular batteries (Ba) are fed with their respective axial centers aligned in parallel to each other to pass through a leakage check mechanism (12), a sealed end face (33) of the tubular batteries (Ba) is irradiated with an X-ray (34). A fluorescent X-ray (40) coming out of the sealed end face (33) is incident upon a detector (39) through a detection window (35). In accordance with the result of analysis on whether the incident fluorescent X-ray (40) contains a fluorescent X-ray (40) associated with an electrolyte component, it is determined whether leakage has occurred from the tubular batteries (Ba). A length (L1, L3, L5) of the detection window (35) in a direction of feed of the tubular batteries (Ba) is set to be less than a spacing (C1, C2) between the tubular batteries (Ba). A length (L2, L4, L6) of the detection window (35) in an orientation orthogonal to the direction of feed is set to be greater than an outer size (R1, R2) of the cross-sectional shape of the tubular batteries (Ba) in an orientation orthogonal to their axial center. It is thus possible to highly accurately determine occurrence of leakage from a tubular battery at high speeds by X-ray fluorescence analysis.
摘要:
A method of preparing optically active isocoumarin-3-yl-acetic acid derivatives represented by Formula (I): wherein a specific isocoumarin-ketene derivative is subjected to an addition reaction with an optically active alcohol, and then the ester thus obtained is subjected to a hydrolysis reaction. An intermediate for synthesis used therein. A method of preparing isocoumarin-3-yl-acetic acid derivatives represented by Formula (III): wherein a specific isocoumarin derivative is subjected to an addition reaction with carbon monoxide and oxygen in the presence of a transition metal catalyst. An intermediate for synthesis used therein.