Abstract: An ultrasonic diagnostic apparatus according to the present disclosure includes: an ultrasonic probe connected to an apparatus body, comprising a battery that supplies power to components of the ultrasonic probe and a cooler that cools inside the ultrasonic probe; and a drive controller that drives the cooler based on a remaining level of the battery and an internal temperature of the ultrasonic probe.

Abstract: According to one embodiment, an ultrasonic probe includes a plurality of ultrasonic transducers, a first substrate, and a plurality of electronic circuit modules. The plurality of ultrasonic transducers equally spaced and aligned at least in one direction. The first substrate to which the ultrasonic transducers are coupled.

Abstract: Provided is an optical pulse-generator capable of efficiently using by a low driving voltage an entire band of an optical frequency comb input to a chirp compensator for the formation of an optical pulse. According to a graph shown in FIG. 4, dispersion compensation amounts (dispersion characteristics) necessary for a chirp (dispersion) compensator to efficiently compress an optical frequency comb which sinusoidally changes become an inverse of a parabolic coefficient. It is found that the dispersion compensation amount required at the center frequency is 2/? of that of a chirp being approximate to a linear chirp, and the required dispersion compensation amount increases as the frequency shift increases.

Abstract: The optical frequency comb generating device having two optical modulation parts 41 and 42 independently modulating optical waves propagating in two branch waveguides and a phase regulator 43 controlling a phase difference between the optical waves includes amplitude adjusting means 22 for adjusting a voltage amplitude of the RF signal supplied to at least one of the optical modulation parts, monitoring means 21 for monitoring the intensity Pout of the output light beam, and a bias control circuit 20 that controls the amplitude adjusting means to change a difference in voltage amplitude between the RF signals supplied to each optical modulation part, that detects a variation of the output light beam corresponding to the variation of the difference in voltage amplitude from the output signal of the monitoring means, and that controls the phase regulator on the basis of the detection result to adjust the phase difference.

Abstract: Provided is an optical pulse-generator capable of efficiently using by a low driving voltage an entire band of an optical frequency comb input to a chirp compensator for the formation of an optical pulse. According to a graph shown in FIG. 4, dispersion compensation amounts (dispersion characteristics) necessary for a chirp (dispersion) compensator to efficiently compress an optical frequency comb which sinusoidally changes become an inverse of a parabolic coefficient. It is found that the dispersion compensation amount required at the center frequency is 2/? of that of a chirp being approximate to a linear chirp, and the required dispersion compensation amount increases as the frequency shift increases.

Abstract: A method for evaluating a characteristic of, especially, each of Mach-Zehnder interferometers (MZIs) of an optical modulator. The method includes a step of measuring the intensity of the output of the optical modulator containing MZIs and a step of evaluating a characteristic of each MZI by using the sideband. The output intensity measuring step is the one of measuring the intensity Sn,k of the sideband signal contained in the output light from the optical modulator. The characteristic evaluating step is the one of evaluating a characteristic of the MZIk by using the Sn,k.

Abstract: According to one embodiment, a processing tool includes: a base; and a detector. The base has a region on which an object to be processed is retained on one side of the base. The detector has electrical conductivity, that includes a connecting portion provided at a periphery of the region where the object to be processed is retained, and a wiring portion connected to two ends of the connecting portion.

Abstract: The optical frequency comb generating device having two optical modulation parts 41 and 42 independently modulating optical waves propagating in two branch waveguides and a phase regulator 43 controlling a phase difference between the optical waves includes amplitude adjusting means 22 for adjusting a voltage amplitude of the RF signal supplied to at least one of the optical modulation parts, monitoring means 21 for monitoring the intensity Pout of the output light beam, and a bias control circuit 20 that controls the amplitude adjusting means to change a difference in voltage amplitude between the RF signals supplied to each optical modulation part, that detects a variation of the output light beam corresponding to the variation of the difference in voltage amplitude from the output signal of the monitoring means, and that controls the phase regulator on the basis of the detection result to adjust the phase difference.

Abstract: A method for evaluating a characteristic of, especially, each of Mach-Zehnder interferometers (MZIs) of an optical modulator. The method includes a step of measuring the intensity of the output of the optical modulator containing MZIs and a step of evaluating a characteristic of each MZI by using the sideband. The output intensity measuring step is the one of measuring the intensity Sn,k of the sideband signal contained in the output light from the optical modulator. The characteristic evaluating step is the one of evaluating a characteristic of the MZIk by using the Sn,k.

Abstract: According to one embodiment, a machining apparatus includes a disk-like grinder, and a nozzle for discharging a cutting fluid toward the grinder. The grinder cuts or grooves a workpiece by rotating. The grinder is provided with a cutting portion at a periphery of the grinder. The nozzle is provided to face the cutting portion in a radial direction of the grinder and arranged adjustably in a width direction of the cutting portion. The nozzle has a rectangular or elliptic cross-section shape in which a dimension in a width direction of the grinder is larger than a dimension in a peripheral direction of the grinder.

Abstract: A piezoelectric transducer for sending and receiving an ultrasonic wave and an FPC for applying current to the piezoelectric transducer is provided, the FPC is arranged oppositely to a side face of the piezoelectric transducer, and a soldering material for electrically connecting the piezoelectric transducer to the FPC is arranged in a corner portion formed by the piezoelectric transducer and the FPC.

Abstract: An ultrasonic probe includes piezoelectric elements each including grooves parallel to each other and arrayed in a direction substantially parallel to the grooves, and a mixed member which is to fill the grooves and obtained by mixing in a nonconductive resin member a nonconductive granular substance with a coefficient of thermal expansion of not more than substantially 10?5 K?1.

Abstract: An ultrasonic probe includes piezoelectric elements each including grooves parallel to each other and arrayed in a direction substantially parallel to the grooves, and a mixed member which is to fill the grooves and obtained by mixing in a nonconductive resin member a nonconductive granular substance with a coefficient of thermal expansion of not more than substantially 10?5 K?1.

Abstract: A machining apparatus includes a rotary machine tool for machining a workpiece. A nozzle jets a coolant for the rotary machine tool. Information which changes based on a position of the nozzle is obtained. The nozzle is moved based on the information obtained.

Abstract: A machining apparatus includes a rotary machine tool for machining a workpiece. A nozzle jets a coolant for the rotary machine tool. Information which changes based on a position of the nozzle is obtained. The nozzle is moved based on the information obtained.

Abstract: Photosensitivity of an inner core which is disposed in a central portion of a core is low. Photosensitivity of an outer core which is disposed close to a cladding is high. In the cladding, photosensitivity of the inner cladding which is close to the core is high and photosensitivity of an outer cladding which is outside of the inner cladding is low. A plurality of slant optical fiber grating having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.

Abstract: There is provided a slant short-period grating which is obtainable by irradiating light onto an optical fiber whose core is formed from quartz glass to which has been doped a photosensitive dopant that changes a refractive index of the quartz glass by light irradiation, and whose clad has one or two or more layers with at least the layer that is adjacent to the core being a photosensitive layer formed from quartz glass to which has been doped a photosensitive dopant that changes a refractive index of the quartz glass by light irradiation. In this slant short-period grating a grating portion is formed by changing the refractive index of the photosensitive layer of the clad and the core at a predetermined grating period along a longitudinal direction of the optical fiber by a predetermined slant angle.

Abstract: A piezoelectric transducer for sending and receiving an ultrasonic wave and an FPC for applying current to the piezoelectric transducer is provided, the FPC is arranged oppositely to a side face of the piezoelectric transducer, and a soldering material for electrically connecting the piezoelectric transducer to the FPC is arranged in a corner portion formed by the piezoelectric transducer and the FPC.

Abstract: A biaxially oriented polyester film with a substantially non-crosslinked polymeric coating containing styrene and acrylate, wherein the coating is highly thermally stable with a primary onset temperature of greater than about 350C, having a glass transition temperature between about 0C and about 50C, having a solubility in a low molecular weight organic solvent, and having a surface energy of greater than about 35 dyne/cm and less than about 40 dyne/cm.

Abstract: Photosensitivity of an inner core (1a) which is disposed in a central portion of a core (1) is low. Photosensitivity of an outer core (1b) which is disposed close to a cladding (2) is high. In the cladding (2), photosensitivity of the inner cladding (2a) which is close to the core (1) is high and photosensitivity of an outer cladding (2b) which is outside of the inner cladding (2a) is low. A plurality of slant optical fiber grating having different optical characteristics by using the optical fiber having such photosensitivity so as to form a gain equalizing optical filter. By doing this, it is possible to provide an optical filter having a slant optical fiber grating which can maintain a filtering characteristics in a narrow bandwidth and enlarge loss area.