Abstract: An absolute thickness distribution cannot be accurately calculated with a conventional technique. A sensor device is provided that includes a plurality of magnetic sensors arranged to face an outer circumference surface of a pipeline and ultrasonic sensors arranged to face the outer circumference surface and measure a thickness of the pipeline in a measurement region in which the plurality of magnetic sensors measure a magnetic field, the ultrasonic sensors being less than the plurality of magnetic sensors.

Abstract: A radio frequency circuit includes carrier amplifiers and peak amplifiers, transformers, a signal output terminal connected to a first end of an output-side coil, an LC series circuit, and a capacitor. An input-side coil is connected, at its first end, to the carrier amplifier, and is connected, at its second end, to the carrier amplifier. An input-side coil is connected, at its first end, to the peak amplifier, and is connected, at its second end, to the peak amplifier. The LC series circuit is connected between the peak amplifier and the ground. The capacitor is connected to a second end of the output-side coil and a first end of an output-side coil. The output-side coil is connected, at its second end, to the ground.

Abstract: Laser processing device (1) includes: laser-beam switching apparatus (70) that switches between a first optical path and a second optical path as an optical path along which a laser beam is to travel, the first optical path including first fiber (11), the second optical path including second fiber (21) that has a core diameter that is larger than a core diameter of first fiber (11); and processing head (80) that illuminates a same processed point on workpiece (900) with a laser beam that has passed through the first optical path or the second optical path. When illumination with laser beam that has passed through the first optical path is performed for a predetermined period of time, laser-beam switching apparatus (70) switches from the first optical path to the second optical path.

Abstract: There is provided an optical axis alignment mechanism between the laser oscillator and the optical fiber. The laser oscillator emits laser light, which then emerges from the emission end of the optical fiber via the axis alignment mechanism. Part of the laser light is received on the light-receiving surface of the CCD camera of a laser light evaluator. Thus, the laser light evaluator acquires a light intensity distribution. The light intensity distribution is used by the optical axis alignment mechanism to align the axis of the laser oscillator with the axis of the optical fiber.

Abstract: A laser processing head includes parallel plate (17) that shifts an optical axis of a laser beam to be emitted from a top to a bottom of body case (6) from a first optical axis to a second optical axis, parallel plate (19) that shift the optical axis of the laser beam from the second optical axis to a third optical axis, and body case (6) that accommodates holders (7 and 18) that respectively hold parallel plates (17 and 19). The laser processing head further includes a rotation mechanism that rotates holders (7 and 18) around a first rotary axis. Opening (7a) that a laser beam reflected by an incident surface of second parallel plate (19) passes through is formed in holder (7), and light receiving part (6a) that receives the laser beam having passed through opening (7a) is disposed in body case (6).

Abstract: A laser device includes: a laser resonator for emitting a laser beam; a condenser lens for collecting the laser beam emitted from the laser resonator; an optical fiber for transmitting the laser beam collected by the condenser lens; at least one light sensor opposing a light receiving surface of the condenser lens and outside an optical path of the laser beam, the at least one light sensor detecting an amount of return light from the condenser lens; and a controller for determining a presence of an abnormality when a value of the amount detected by the at least one light sensor is greater than a predetermined maximum threshold.

Abstract: A fiber coupling device (100) includes the following components: a wedge plate (102) for receiving light and refracting the light in a predetermined direction, a condenser lens (104) for collecting the light refracted by the wedge plate (102); and an optical fiber (107) having an incident surface for receiving the light collected by the condenser lens (104). The wedge plate (102) is held rotatable around the optical axis (200) of the light incident on the wedge plate (102). The light refracted by the wedge plate (102) and collected by the condenser lens (104) is incident on a different point on the incident surface depending on the rotation angle of the wedge plate (102).

Abstract: A fiber coupling device includes a housing and a window provided in the housing. The fiber coupling device is configured to collectively guide plural laser beams to at least a first fiber, the plurality of laser beams each being emitted from a corresponding one of plural external laser light sources and entering through a laser beam inlet. The housing is configured such that the laser beams enter the housing from the laser beam inlet. The window is provided inside the housing and faces the laser beam inlet. The fiber coupling device is not required to detach when an optical axis is adjusted.

Abstract: A condenser lens for collecting a laser beam (300) is disposed between the laser oscillator and the incident end surface of the optical fiber. The laser beam (300) is divided into a plurality of beams (303, 304). The power of the laser beam (304) is measured and maximized by adjusting the position of the condenser lens. The FFP of the laser beam (303) is measured and minimized by adjusting the position of the condenser lens. These adjusted positions are stored as the first and second lens positions. The FFP of the laser beam (303) is measured while the condenser lens is being moved between these positions so as to make the BPP not more than a predetermined value.

Abstract: A condenser lens for collecting a laser beam (300) is disposed between the laser oscillator and the incident end surface of the optical fiber. The laser beam (300) is divided into a plurality of beams (303, 304). The power of the laser beam (304) is measured and maximized by adjusting the position of the condenser lens. The FFP of the laser beam (303) is measured and minimized by adjusting the position of the condenser lens. These adjusted positions are stored as the first and second lens positions. The FFP of the laser beam (303) is measured while the condenser lens is being moved between these positions so as to make the BPP not more than a predetermined value.

Abstract: A laser processing head includes parallel plate (17) that shifts an optical axis of a laser beam to be emitted from a top to a bottom of body case (6) from a first optical axis to a second optical axis, parallel plate (19) that shift the optical axis of the laser beam from the second optical axis to a third optical axis, and body case (6) that accommodates holders (7 and 18) that respectively hold parallel plates (17 and 19). The laser processing head further includes a rotation mechanism that rotates holders (7 and 18) around a first rotary axis. Opening (7a) that a laser beam reflected by an incident surface of second parallel plate (19) passes through is formed in holder (7), and light receiving part (6a) that receives the laser beam having passed through opening (7a) is disposed in body case (6).

Abstract: There is provided an optical axis alignment mechanism between the laser oscillator and the optical fiber. The laser oscillator emits laser light, which then emerges from the emission end of the optical fiber via the axis alignment mechanism. Part of the laser light is received on the light-receiving surface of the CCD camera of a laser light evaluator. Thus, the laser light evaluator acquires a light intensity distribution. The light intensity distribution is used by the optical axis alignment mechanism to align the axis of the laser oscillator with the axis of the optical fiber.

Abstract: A fiber coupling device (100) includes the following components: a wedge plate (102) for receiving light and refracting the light in a predetermined direction, a condenser lens (104) for collecting the light refracted by the wedge plate (102); and an optical fiber (107) having an incident surface for receiving the light collected by the condenser lens (104). The wedge plate (102) is held rotatable around the optical axis (200) of the light incident on the wedge plate (102). The light refracted by the wedge plate (102) and collected by the condenser lens (104) is incident on a different point on the incident surface depending on the rotation angle of the wedge plate (102).

Abstract: A laser device includes the following components: a laser resonator for emitting a laser beam; a condenser lens (21) for collecting the laser beam emitted from the laser resonator; an optical fiber (7) for transmitting the laser beam collected by the condenser lens (21); at least one light sensor (5) opposing a light receiving surface of the condenser lens (21) and outside the optical path of the laser beam, the at least one light sensor (5) detecting the amount of return light from the condenser lens (21); and a controller for determining the presence of an abnormality when the value of the amount detected by any of the at least one light sensor (5) is greater than the predetermined maximum threshold.

Abstract: Laser processing device (1) includes: laser-beam switching apparatus (70) that switches between a first optical path and a second optical path as an optical path along which a laser beam is to travel, the first optical path including first fiber (11), the second optical path including second fiber (21) that has a core diameter that is larger than a core diameter of first fiber (11); and processing head (80) that illuminates a same processed point on workpiece (900) with a laser beam that has passed through the first optical path or the second optical path. When illumination with laser beam that has passed through the first optical path is performed for a predetermined period of time, laser-beam switching apparatus (70) switches from the first optical path to the second optical path.

Abstract: A fiber spatial coupling device includes a detachable process fiber, an optical system, and a main body. The process fiber guides laser light. The optical system collects the laser light into the process fiber. The main body holds the optical system, and has a supply port for supplying gas to a space between the process fiber and the optical system.

Abstract: A fiber coupling device includes a housing and a window provided in the housing. The fiber coupling device is configured to collectively guide plural laser beams to at least a first fiber, the plurality of laser beams each being emitted from a corresponding one of plural external laser light sources and entering through a laser beam inlet. The housing is configured such that the laser beams enter the housing from the laser beam inlet. The window is provided inside the housing and faces the laser beam inlet. The fiber coupling device is not required to detach when an optical axis is adjusted.

Abstract: The semiconductor laser device of the present invention has a structure that allows a cooling medium to be directly fed into heatsink disposed inside package. Besides, the structure ensures that the inside of package is kept at hermetically sealed condition. The structure suppresses temperature rise in semiconductor laser element and package, enhancing the reliability and quality of the semiconductor laser device. At the same time, a high-power semiconductor laser element can be employed.

Abstract: The semiconductor laser device of the present invention has a structure that allows a cooling medium to be directly fed into heatsink disposed inside package. Besides, the structure ensures that the inside of package is kept at hermetically sealed condition. The structure suppresses temperature rise in semiconductor laser element and package, enhancing the reliability and quality of the semiconductor laser device. At the same time, a high-power semiconductor laser element can be employed.

Abstract: An electronic device system of the invention has a controlling device and a controlled device interconnected via a data bus which complies with a predetermined communication format and which allows data to be exchanged between the devices. In a command transmission/reception transaction, the controlling device transmits a command to the controlled device. If an interim response is returned from the controlled device, the controlling device regards the transaction as complete and terminates the process without waiting for receipt of a final response from the controlled device.