Abstract: A white balance adjustment jig for an endoscope includes: an insertion portion that includes at least one insertion hole into which a distal end part of an endoscope is inserted; a lid portion that is disposed to face the insertion portion; and an outer peripheral portion that is in contact with the insertion portion and the lid portion to form an internal space. The lid portion includes a chart having a plurality of marks on a surface on an insertion portion side, and the chart is inclined with respect to a perpendicular plane perpendicular to the insertion direction of the distal end part.

Abstract: A current having a light emission period current value for emitting first illumination light or second illumination light is caused to flow through a V-LED in a first light emission period for emitting the first illumination light or a second light emission period for emitting the second illumination light. A current having a light non-emission period current value for applying a VF voltage is caused to flow through a pseudo load in a light non-emission period that is provided between the first light emission period and the second light emission period, or between the second light emission periods and in which the first illumination light and the second illumination light are not emitted.

Abstract: A current having a light emission period current value for emitting first illumination light or second illumination light is caused to flow through a V-LED in a first light emission period for emitting the first illumination light or a second light emission period for emitting the second illumination light. A current having a light non-emission period current value for applying a VF voltage is caused to flow through a pseudo load in a light non-emission period that is provided between the first light emission period and the second light emission period, or between the second light emission periods and in which the first illumination light and the second illumination light are not emitted.

Abstract: An endoscope system includes a plurality of light sources which emits light having different wavelengths, a photodetector which is provided in each of the plurality of light sources, and which receives a part of the light of the plurality of light sources and obtains information on a light emitting quantity of the plurality of light sources, an image acquisition unit that acquires an image to be observed for each illumination light using at least first illumination light and second illumination light, composed of the light emitted from at least one of the plurality of light sources, and a control unit that makes a mutual image signal ratio constant in the plurality of images acquired by the image acquisition unit.

Abstract: The endoscope system includes a light source device that illuminates a subject, dichroic mirrors that separate a reflected light beam from the subject into a first blue light beam, a second blue light beam, a green light beam, and a red light beam, a CMOS sensor that picks up an image of the first blue light beam, a CMOS sensor that picks up an image of the second blue light beam, a CMOS sensor that picks up an image of the green light beam, and a CMOS sensor that picks up an image of the red light beam, and a control unit that controls image pickup. The control unit independently controls the exposure times of the CMOS sensors.

Abstract: An endoscope system includes a light source unit that emits normal light and first specific light having a peak wavelength different from that of each of red light, green light, and blue light included in the normal light, a dichroic filter that transmits first specific return light which is return light from a subject illuminated with the first specific light and that reflects return light from the subject illuminated with the normal light, a CMOS sensor on which the return light of the normal light is incident, and a CMOS sensor on which the first specific return light is incident.

Abstract: A water repellency-imparted fiber article (10) of the present invention includes: a fiber article (1) having a skin-facing surface (1a) and a non-skin-facing surface (1b); and a water repellency-imparting agent attached to the fiber article (1). The fiber article (1) contains a water-absorbent fiber and has water absorbency in terms of a water absorption time of 30 seconds or less as measured in accordance with the dropping method of JIS L-1907. The water repellency-imparted fiber article (10) has a non-skin-side water-repellent region (2) on the non-skin-facing surface (1b) of the fiber article (1), the non-skin-side water-repellent region (2) including a portion to which the water repellency-imparting agent is attached.

Abstract: An endoscope system includes a plurality of light sources which emits light having different wavelengths, a photodetector which is provided in each of the plurality of light sources, and which receives a part of the light of the plurality of light sources and obtains information on a light emitting quantity of the plurality of light sources, an image acquisition unit that acquires an image to be observed for each illumination light using at least first illumination light and second illumination light, composed of the light emitted from at least one of the plurality of light sources, and a control unit that makes a mutual image signal ratio constant in the plurality of images acquired by the image acquisition unit.

Abstract: A control section performs first preliminary imaging in which an observation target is illuminated with first blue light at a wavelength band of 450±10 nm and an image of the observation target is captured. A yellow pigment concentration calculator calculates concentration of the yellow pigment based on an image signal obtained by performing the first preliminary imaging. A prescribed exposure amount calculator calculates a prescribed exposure amount of second blue light at a wavelength band of 470±10 nm for second preliminary imaging based on the calculated concentration of the yellow pigment. A control section performs second preliminary imaging in which an observation target is illuminated with the second blue light and an image of the observation target is captured based on a prescribed exposure amount of the second blue light for the second preliminary imaging. An arithmetic value calculator calculates an arithmetic value based on an image signal obtained by performing the second preliminary imaging.

Abstract: An endoscope system includes a color image sensor, having pixels sensitive to plural colors different from one another, for imaging an object. Plural LEDs discretely generate light of colors different from one another, to apply polychromatic light constituted by spectrally combining the light of the colors to the object. A light source controller controls the plural LEDs, to correct an intensity ratio of an integrated emission intensity between the plural colors according to receiving the first polychromatic light with respectively the pixels of the plural colors, so that the intensity ratio becomes equal to a target ratio of an integrated emission intensity between the plural colors according to receiving continuous spectrum light with respectively the pixels of the plural colors, the continuous spectrum light having an at least partial wavelength range of light emitted by a white light source.

Abstract: A light source device for an endoscope comprises a light source unit and a light source controller. The light source unit has LEDs independently emitting light of respective different colors, and emits first multicolor spectrum light having a first multicolor spectrum, into which the light from the LEDs is combined. The light source controller makes a light quantity integral of the first multicolor spectrum light in a first wavelength band equal to a light quantity integral of continuous-spectrum light in the first wavelength band and makes a light quantity integral of the first multicolor spectrum light in a second wavelength band equal to a light quantity integral of the continuous-spectrum light in the second wavelength band. The continuous-spectrum light includes at least a part of a wavelength band of light emitted from a white light source. The second wavelength band is different from the first wavelength band.

Abstract: A control section performs first preliminary imaging in which an observation target is illuminated with first blue light at a wavelength band of 450±10 nm and an image of the observation target is captured. A yellow pigment concentration calculator calculates concentration of the yellow pigment based on an image signal obtained by performing the first preliminary imaging. A prescribed exposure amount calculator calculates a prescribed exposure amount of second blue light at a wavelength band of 470±10 nm for second preliminary imaging based on the calculated concentration of the yellow pigment. A control section performs second preliminary imaging in which an observation target is illuminated with the second blue light and an image of the observation target is captured based on a prescribed exposure amount of the second blue light for the second preliminary imaging. An arithmetic value calculator calculates an arithmetic value based on an image signal obtained by performing the second preliminary imaging.

Abstract: An endoscope system includes a color image sensor, having pixels sensitive to plural colors different from one another, for imaging an object. Plural LEDs discretely generate light of colors different from one another, to apply polychromatic light constituted by spectrally combining the light of the colors to the object. A light source controller controls the plural LEDs, to correct an intensity ratio of an integrated emission intensity between the plural colors according to receiving the first polychromatic light with respectively the pixels of the plural colors, so that the intensity ratio becomes equal to a target ratio of an integrated emission intensity between the plural colors according to receiving continuous spectrum light with respectively the pixels of the plural colors, the continuous spectrum light having an at least partial wavelength range of light emitted by a white light source.

Abstract: A light source device for an endoscope comprises a light source unit and a light source controller. The light source unit has LEDs independently emitting light of respective different colors, and emits first multicolor spectrum light having a first multicolor spectrum, into which the light from the LEDs is combined. The light source controller makes a light quantity integral of the first multicolor spectrum light in a first wavelength band equal to a light quantity integral of continuous-spectrum light in the first wavelength band and makes a light quantity integral of the first multicolor spectrum light in a second wavelength band equal to a light quantity integral of the continuous-spectrum light in the second wavelength band. The continuous-spectrum light includes at least a part of a wavelength band of light emitted from a white light source. The second wavelength band is different from the first wavelength band.

Abstract: An eddy current flaw detection system includes an eddy current flaw detection probe having a substrate facing an inspection surface, and at least one exciting coil and at least two detecting coils provided on the substrate, a scanning device which scans the probe on the inspection surface, a scan control device which drives and controls the scanning device, an eddy current flaw detection device which acquires results of detection of a plurality of detection points corresponding to combinations of the exciting and detecting coils for each scan position of the probe, and a data processing/display device which processes data from the scan control device and the eddy current flaw detection device and thereby displays a result of flaw detection. The data processing/display device acquires three-dimensional coordinates of the detection points for each scan position of the probe and thereby creates three-dimensional flaw detection data.

Abstract: In an ultrasonic inspection method or ultrasonic inspection system in which an ultrasonic wave is propagated to an test object via a medium such as a liquid or a gas, an incident position of the ultrasonic wave is accurately and reliably identified. In an ultrasonic inspection method based on an immersion technique, an optical irradiator is mounted on an ultrasonic wave transmitting/receiving unit, an optical marker is irradiated from the optical irradiator to the test object, and an irradiated position of the optical marker is imaged using imaging equipment in order to perform inspection.

Abstract: A capsule endoscope is swallowed by a patient, to capture images from inner wall surfaces of patient's digestive tract, while detecting imaging positions of the capsule endoscope. A doctor observes the images captured by the capsule endoscope, to select an aimed point image that contains a portion suspected of a lesion, and some images that represent pass points on an insertion route of a balloon endoscope. While a probing tip of the balloon endoscope is being inserted into the patient for the sake of thorough examination of the suspected portion, a degree of similarity between an image captured by the balloon endoscope and an image of a destination point, which is one of the pass points and the aimed point, is detected to judge by the similarity whether the probing tip has reached the destination point or not. So the doctor can get the probing tip to the aimed point easily.

Abstract: An endoscope cleaning system of one aspect of the subject matter includes: a first cleaning device configured to clean an endoscope; a second cleaning device configured to clean the endoscope according to a method different from that of the first cleaning device; and a cleaning evaluation device configured to determine whether or not a cleaning level of the endoscope cleaned by one of the first cleaning device and the second cleaning device satisfies a predetermined criterion, wherein one of the first cleaning device and the second cleaning device cleans the endoscope in accordance with a determination result of the cleaning evaluation device.

Abstract: A welded portion inspection apparatus of a reactor pressure vessel moves on an outside surface of the reactor pressure vessel, and is provided with a scan portion having a sensor for detecting a state of the welded portion to be inspected. The apparatus has a first scan axis with a pedestal having the sensor installed for moving the sensor in a predetermined first direction to perform scanning, and a second scan axis orthogonal to the first scan axis for moving the first scan axis in a predetermined second direction. Drive portions are installed removably on both sides of the scan portion for moving the scan portion to a position of the welded portion to be inspected, and a motor is provided for driving the drive portions. The drive portions include a plurality of magnets which are endlessly formed in a line.

Abstract: In an ultrasonic inspection method or ultrasonic inspection system in which an ultrasonic wave is propagated to an test object via a medium such as a liquid or a gas, an incident position of the ultrasonic wave is accurately and reliably identified. In an ultrasonic inspection method based on an immersion technique, an optical irradiator is mounted on an ultrasonic wave transmitting/receiving unit, an optical marker is irradiated from the optical irradiator to the test object, and an irradiated position of the optical marker is imaged using imaging equipment in order to perform inspection.