Abstract: An observation apparatus includes an imaging unit, a driving mechanism, and a control section. The imaging unit includes an imaging section and an illumination section. The imaging section includes an image sensor and an imaging optical system, and images a sample to output an image signal. The illumination section includes a plurality of emitting sections which are located away from an optical axis of the imaging optical system and configured to emit illumination light toward the sample. The driving mechanism moves the imaging unit. The control section controls operations of the imaging section, the illumination section, and the driving mechanism. The control section determines a lighting emitting section of the emitting sections and causes the lighting emitting section to light based on the image signal, when the imaging unit is moved by the driving mechanism.
Abstract: An electronic endoscope removably connected to a video processor in which a predetermined gamma characteristic is set includes: an image pickup device provided at a distal end of an insertion portion configured to be inserted into a subject, the image pickup device being configured to pick up an optical image of the subject to generate an image pickup signal; a gain circuit configured to amplify the image pickup signal using a predetermined gain parameter; a gamma characteristic recognition circuit configured to recognize the gamma characteristic of the video processor; and a gain adjustment circuit configured to set the gain parameter according to the gamma characteristic.
December 14, 2018
Date of Patent:
June 2, 2020
Yasunori Matsui, Shinji Yamashita, Yuzuru Tanabe, Yuta Matsuno
Abstract: This endoscope objective optical system is capable of acquiring images of high resolution and wide angle of observation field, maintaining low invasiveness and appropriately correcting various aberrations. This optical system has at least a first cemented lens which has a positive lens and a negative lens, in which the cemented lens satisfies the following conditional expressions: (1) 15.0<?A?ndA<15.75 and (2) ?0.2>rdyA1/ih>?20, wherein ?A is an Abbe number of the negative lens, ndA is a refractive index of the negative lens at the d-line, rdyA1 is a curvature radius of a joining surface of the negative lens, and ih is an image height.
Abstract: An imaging device, comprising an image sensor, an imaging control circuit that controls an integration time of the image sensor, and a controller comprising a flicker component detection section that detects flicker components, and a flicker determination section that determines existence of flicker, wherein the flicker component detection section is provided with a plurality of detection regions in an imaging region of the image sensor along a scanning direction for an electronic shutter function, and detects flicker components from differences in brightness relating to the same detection region based on a plurality of imaging outputs that have been acquired by performing integrating at the same integration time with different frames, and the flicker determination section changes a determination value for determining the existence of flicker in accordance with an imaging mode, and performs determination by comparing the flicker component and the determination value.
Abstract: An image processing apparatus includes a deterioration degree estimation unit, a statistical information calculation unit, a correction coefficient calculation unit, and a contrast correction unit. The deterioration degree estimation unit estimates a deterioration degree of each local region of image data. The statistical information calculation unit calculates at least a luminance of a high luminance portion in a luminance distribution of the image data from statistical information of each local region of the image data. The correction coefficient calculation unit calculates a correction coefficient to perform contrast correction. The contrast correction unit performs the contrast correction for each local region of the image data on the basis of the correction coefficient calculated by the correction coefficient calculation unit.
Abstract: An image pickup apparatus includes an image forming optical system which includes an aperture stop that determines an axial light beam, and one cemented lens, and an image pickup section which is disposed on an image side of the image forming optical system, and which has a surface which is not flat and is curved to be concave toward the image forming optical system, wherein the cemented lens includes in order from an object side, a first lens having a negative refractive power, a second lens, and a third lens having a positive refractive power.
Abstract: A Raman probe includes: a first illuminating fiber and a second illuminating fiber that are arranged in series and that are formed of different materials from each other; a coupling optical system for optically coupling the first and second illuminating fibers; a light-collecting fiber that is formed of the same material as the second illuminating fiber and that collects Raman scattered light from an examination subject; and an optical filter that is disposed between the first and second illuminating fibers and that selectively transmits a laser beam being guided by the first illuminating fiber and, of Raman scattered light of the first illuminating fiber excited by the laser beam, Raman scattered light the amount of Raman shift of which is smaller than a predetermined amount of Raman shift in a Raman spectrum of the examination subject.
Abstract: The shape sensor system of the present invention includes a braided structure in which small diameter bending members including two or more optical fibers, provided with detection target portions, are spirally wound around a core member as an axis in directions opposite to each other, or a braided structure in which three or more small diameter bending members including an optical fiber and a dummy optical fiber or a thin metal wire are braided, a plurality of detection target portions are distributed in the direction around the axis of the core member, the bending directions of the respective bending members are synthesized to detect a bending shape of the probe portion, a function of adjusting the fiber length in a braiding cycle is performed, and position deviation does not occur.
Abstract: An imaging unit includes: an imaging element including a light receiver and a connection terminal formed on a back surface of the imaging element; a flexible printed circuit board including a connection electrode forming region, a cable connection electrode forming region, and a bent portion provided between the connection electrode forming region and the cable connection electrode forming region; and sealing resin filled around a junction between the imaging element and the flexible printed circuit board. The bent portion includes: a first bent portion that is bent toward the imaging element from the connection electrode forming region located parallelly to the light receiver of the imaging element; and a second bent portion that is provided continuously with the first bent portion and lets the cable connection electrode forming region extend in a direction opposite to a direction toward the imaging element.
Abstract: A control method for an endoscope reprocessor is a control method for an endoscope reprocessor that includes a treatment tank, a circulation conduit that links a circulation opening and a discharge opening opened in the treatment tank to each other, a first pump that feeds liquid from the circulation opening towards the discharge opening, an atmospheric open conduit including a first end portion open to an atmosphere and a second end portion connected between the circulation opening and the first pump in the circulation conduit, a filter that filtrates a liquid flowing from the treatment tank through the circulation opening into the circulation conduit, and a sensor that detects a liquid feeding state in the circulation conduit, where the liquid feeding state in the circulation conduit is measured by the sensor during operation of the first pump in a state where the inside of the atmospheric open conduit is closed.
Abstract: A linear actuator for endoscope includes: a movable frame made of a magnetic material; a fixed frame in which the movable frame is provided so as to be movable forward and backward, the fixed frame being made of a non-magnetic material; two coils formed by being wound on an outer surface of the fixed frame, the two coils being disposed side by side in a longitudinal axis direction; a permanent magnet disposed in a manner stacked and superimposed on the two coils; and two yokes respectively disposed at a front and a back of the permanent magnet and the two coils.
Abstract: An electrode for high-frequency medical device, has a substrate; an intermediate layer laminated on the substrate, wherein the intermediate layer has a top layer formed on the outermost part of the intermediate layer and the top layer is formed from a metal layer having a higher thermal conductivity than that of the substrate; and a coating layer laminated on the intermediate layer, wherein the coating layer is configured such that a plurality of metal particles having a thermal conductivity equal to or larger than 250 W/(m·K) are distributed in a nonmetal material.
Abstract: An optical unit includes: an objective lens unit arranged on a distal end side; an image pickup unit arranged on a proximal end side of the objective lens unit; an optical frame; an image pickup device frame; a proximal-end-side outer circumferential face provided on a proximal end side of the optical frame; an inner circumferential face of a distal-end-side frame body provided on a distal end side of the image pickup device frame; a plurality of notches provided apart in a circumferential direction on an outer circumferential face of one of the frames, the plurality of notches having opening portions on end faces where the optical frame and the image pickup device frame face each other; and holding portions provided on an outer circumferential face of the other frame different from the one frame, the holding portions passing through the opening portions and being accommodated in the notches.
Abstract: A lens barrel of the present invention includes an image stabilizer configured to correct image shake by driving optical devices, a ring-shaped electronic circuit board on which a pair of the acceleration sensors is arranged at each of positions facing each other with an optical axis of the image pickup optical system in between, and a lens barrel body in which at least the image pickup optical system, the image stabilizer, and the ring-shaped electronic circuit board are accommodated, and the ring-shaped electronic circuit board is fixed to the lens barrel body so as to be perpendicular to the optical axis of the image pickup optical system, and each of the positions where each of the pair of acceleration sensors is fixed is a position where each of the pair of acceleration sensors outputs a same signal when vibration other than camera shake is generated.
Abstract: A detector-equipped treatment tool including: a distal-end treatment portion that applies a force to and treats biological tissue; a proximal-end portion that supports the distal-end treatment portion so as to be relatively movable; a detector that is disposed in a cavity provided inside of the distal-end treatment portion and detects the force; wiring that is connected to the detector; and a duct that is connected to the distal-end treatment portion and guides the wiring led out of the distal-end treatment portion from the detector in the cavity to the proximal-end portion.
Abstract: In a flexible tube insertion apparatus, at least one circuit determines whether an S-shape is formed in an insertion section based on a shape information of the insertion section detected by a detector, determines whether an intersection angle between an extension line of a central axis of the insertion section and a tangential line for the insertion section at an inflection point is enlarged or not based on the shape information, and determines whether or not the stiffness variable portions are provided in a position of the S-shape in the insertion section when it is determined that the S-shape is formed and the intersection angle is enlarged. A stiffness controller increases a stiffness of the stiffness variable portions included in the position of the S-shape in accordance with the determination of the circuit.
Abstract: An image pickup module includes a plurality of semiconductor devices laminated via a sealing layer a signal is transmitted via a signal cable connected to a rear surface of the image pickup module, a first semiconductor device has a semiconductor circuit portion in a central area on a first principal plane, through wires in an intermediate area and first electrodes connected to the through wires in the central area on a second principal plane, the second semiconductor device has second electrodes in the central area on a third principal plane, and an external connection terminal to which the signal cable is connected, on a rear surface, and the sealing layer includes a first sealing layer arranged in the central area and a second sealing layer disposed in an outer circumferential area surrounding the intermediate area and with a Young's modulus smaller than a Young's modulus of the first sealing layer.
Abstract: This endoscopic apparatus has an insertion portion having a distal end portion; a first/second objective optical systems disposed in the distal endportion to forma first/second objective image of an object on an imaging region by transmitting light from the object through a first/second optical path; an optical path switching means configured to switch an optical path of the light from the object to either of the first optical path or the second optical path such that either of the first objective image or the second objective image is formed on the imaging region; an image sensor for capturing the first/second objective image; and an optical path switching controller for controlling the optical path switching means to switch the optical paths.
Abstract: An endoscope device includes a main body part; a first insertion part having a tubular shape and including a first image sensor, and a first video signal transmission device converting a video output signal into an optical signal, optically transmitting the optical signal to a first proximal end part, and outputting a first video signal to the main body part; and a connector part configured to electrically couple the main body part with the first insertion part, including a main body part connector, and a first insertion part connector, wherein the first video signal is transmitted from the first insertion part to the main body part when the main body part connector is electrically coupled with the first insertion part connector, the first video signal transmission device includes a first photoelectrical converter at the first proximal end part, and the connector part is configured by an electrical connector.