Abstract: A steering shaft includes an inner shaft including first tooth parts, an outer shaft including second tooth parts, and a resin layer. The resin layer includes a plurality of thick film parts and at least four thin film parts. Each thick film part is disposed with a gap from one of the second tooth parts, and each thin film part contacts both one of the first tooth parts and one of the second tooth parts. At a section orthogonal to a central axis of the inner shaft, the thickness of each thin film part is smaller than the thickness of each thick film part.

Abstract: Disclosed is an ophthalmic photography device for capturing an eye including: a first photography optical system that captures a first image of the eye by capturing the eye by performing a first type of photography; a second photography optical system that captures a second image of the eye by capturing the eye by performing a second type of photography; a third photography optical system that captures a front image of the eye by capturing the eye using a third type of photography; and a controller for acquiring a first front image when the first image is acquired, and acquiring a second front image different from the first front image when the second image is acquired; and for detecting the amount of positional deviation between the first and second front images, and correlating the first image to the second image based on the amount of positional deviation.

Abstract: A lead-acid battery comprising: —at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and —at least one positive lead-dioxide based battery electrode, each positive electrode being in electrical connection to a second outer terminal of the battery, —separator interleaving the facing electrodes; —electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 20-65% by weight of a high electrical conductivity carbonaceous material, 30-70% of a high specific surface area carbonaceous material, at least 0.1% lead and binder.

Abstract: An optical coherence tomography apparatus includes: a scanning unit configured to scan a test substance with measurement light; an OCT optical system configured to detect an A scan signal caused by interference between the measurement light and reference light corresponding to the measurement light; and a processor configured to: acquire three-dimensional OCT data in which the A scan signals at respective scanning positions at the test substance are arranged in a two-dimensional manner; acquire a histogram of the A scan signals at the respective scanning positions; and generate an OCT front image by processing the acquired three-dimensional OCT data based on the acquired histogram.

Abstract: Disclosed is an ophthalmic photography device for capturing an eye including: a first photography optical system that captures a first image of the eye by capturing the eye by performing a first type of photography; a second photography optical system that captures a second image of the eye by capturing the eye by performing a second type of photography; a third photography optical system that captures a front image of the eye by capturing the eye using a third type of photography; and a controller for acquiring a first front image when the first image is acquired, and acquiring a second front image different from the first front image when the second image is acquired; and for detecting the amount of positional deviation between the first and second front images, and correlating the first image to the second image based on the amount of positional deviation.

Abstract: A lead-acid battery comprising:—at least one negative electrode comprising lead-based battery electrode material and at least one region of capacitor material overlying the lead-based battery electrode material, each electrode being in electrical connection to an outer terminal of the battery, and—at least one positive lead-dioxide based battery electrode, each positive electrode being in electrical connection to a second outer terminal of the battery,—separator interleaving the facing electrodes;—electrolyte filling at least the space of the electrodes and separators wherein the capacitor material overlying the lead-based battery electrode material comprises 20-65% by weight of a high electrical conductivity carbonaceous material, 30-70% of a high specific surface area carbonaceous material, at least 0.1% lead and binder.

Abstract: A method for determining the deterioration of an accumulator battery, hooked up with loads in a system, based on the result of measuring internal resistances of an accumulator battery, the method including predetermining a temperature at which the deterioration of the accumulator battery is determined, calculating temperature correction coefficients, predetermining resistance-voltage conversion factors, measuring the internal resistances and temperature of the accumulator battery, converting the measured internal resistance values into the internal resistance values, converting the internal resistance values at the specified temperature into the terminal discharge voltage values and determining whether the accumulator battery is deteriorated or not by means of comparison of the terminal discharge voltage values.

Abstract: The method for calculating charged rate of a secondary battery is intended to calculate charged rate of a secondary battery which supplies electric power to loads, and comprises the step to measure voltage of the secondary battery more than once in a predetermined period of time after termination of charge or discharge, the step to determine the coefficients of a quadric or more exponential damping function which approximates the time characteristic of the open circuit voltage of the secondary battery by recursive calculation with the plural measured voltage values, and the step to calculate a convergent value of the open circuit voltage of the secondary battery from at least the exponential damping function with the coefficients determined above. Therefore, precise charged rate of the secondary battery can be calculated from the precise convergent value of the open circuit voltage.

Abstract: A method for determining deterioration of accumulator battery hooked up with loads in a system based on results of measuring internal resistances of an accumulator battery, the method comprising the steps of; predetermining as a specified temperature a temperature at which the deterioration of the accumulator battery is determined; calculating in advance temperature correction coefficients of the internal resistances from changes of the internal resistances depending on temperatures; predetermining resistance-voltage conversion factors to convert between the internal resistances at the specified temperature and terminal discharge voltages of the accumulator battery which are obtained at the specified temperature under a condition of flowing predetermined discharge currents from the accumulator battery; measuring the internal resistances of the accumulator battery and temperature of the accumulator battery at an internal resistance measurement; converting the measured internal resistance values into the int

Abstract: A method for determining the deterioration of an accumulator battery, hooked up with loads in a system, based on the result of measuring internal resistances of an accumulator battery, the method including predetermining a temperature at which the deterioration of the accumulator battery is determined, calculating temperature correction coefficients, predetermining resistance-voltage conversion factors, measuring the internal resistances and temperature of the accumulator battery, converting the measured internal resistance values into the internal resistance values, converting the internal resistance values at the specified temperature into the terminal discharge voltage values and determining whether the accumulator battery is deteriorated or not by means of comparison of the terminal discharge voltage values.

Abstract: The method for calculating charged rate of a secondary battery is intended to calculate charged rate of a secondary battery which supplies electric power to loads, and comprises the step to measure voltage of the secondary battery more than once in a predetermined period of time after termination of charge or discharge, the step to determine the coefficients of a quadric or more exponential damping function which approximates the time characteristic of the open circuit voltage of the secondary battery by recursive calculation with the plural measured voltage values, and the step to calculate a convergent value of the open circuit voltage of the secondary battery from at least the exponential damping function with the coefficients determined above.

Abstract: A method for determining deterioration of accumulator battery hooked up with loads in a system based on results of measuring internal resistances of an accumulator battery, the method comprising the steps of; predetermining as a specified temperature a temperature at which the deterioration of the accumulator battery is determined; calculating in advance temperature correction coefficients of the internal resistances from changes of the internal resistances depending on temperatures; predetermining resistance-voltage conversion factors to convert between the internal resistances at the specified temperature and terminal discharge voltages of the accumulator battery which are obtained at the specified temperature under a condition of flowing predetermined discharge currents from the accumulator battery; measuring the internal resistances of the accumulator battery and temperature of the accumulator battery at an internal resistance measurement; converting the measured internal resistance values into the intern

Abstract: In order to monitor a state of a battery, a threshold value of an internal impedance of the battery is first determined. It is prepared an approximate expression indicating a correlation between a residual capacity of the battery and an internal impedance of the battery which is greater than the threshold value. The internal impedance of the battery is then measured. When the measured internal impedance is the threshold value or less, the residual capacity is determined as an initial value. When the measured internal impedance is greater than the threshold value, the residual capacity is monitored with the approximate expression.

Abstract: In order to monitor a state of a battery, a threshold value of an internal impedance of the battery is first determined. It is prepared an approximate expression indicating a correlation between a residual capacity of the battery and an internal impedance of the battery which is greater than the threshold value. The internal impedance of the battery is then measured. When the measured internal impedance is the threshold value or less, the residual capacity is determined as an initial value. When the measured internal impedance is greater than the threshold value, the residual capacity is monitored with the approximate expression.