Abstract: An endoscope apparatus includes a compression processing control unit configured to carry out a compression processing of compressing image data by using a compression parameter to generate compressed data, a monitor that is a display unit configured to display a display image corresponding to the image data, an information quantity detection unit configured to detect a quantity of information on an object contained in the image data, and a judgement unit configured to carry out a judgement processing of judging whether or not a judgement value corresponding to the quantity of information is smaller than a predetermined threshold. The image pickup of the object and the generation of the image data are continuously performed multiple times, and the judgement processing is carried out whenever the image data is generated. The compression parameter and the display image are determined based on a result of the judgement processing.

Abstract: An image pickup system includes an image pickup apparatus, and an information processing apparatus connectable with the image pickup apparatus. The image pickup apparatus includes an effective pixel area including a plurality of effective pixels configured to output accumulated electric charge as an image signal, a global reset circuit configured to output a global reset signal, and a reading timing generation circuit configured to temporarily stop and resume, at optional timings, reading of the electric charge accumulated by the effective pixels included in each of a plurality of divided areas. The information processing apparatus detects brightness of an object based on the image signals, and determines, based on the brightness detection signal, the number of the plurality of divided areas, a timing of reading the electric charge accumulated by the effective pixels included in each of the plurality of divided areas, and a timing of outputting the global reset signal.

Abstract: An external mechanism for an endoscope includes: a bending wheel configured to engage with a second UD knob of a second bending operation device provided in an operation portion of an endoscope; a motor portion configured to generate a driving force for rotating the bending wheel; a housing case housing the bending wheel and the motor portion and detachably attached to the operation portion, and an operation switch arranged outside the housing case and configured to output a control signal to the motor portion due to the operating element being operated, in which the operation switch is pivotally supported by the rotation shaft and rotates with respect to the housing case.

Abstract: In a wireless communication terminal, a processor is configured to execute sleep determination when a wireless communicator receives a sleep-declaration packet from a sleep-declaration terminal. The processor is configured to determine that sleep by the sleep-declaration terminal is accepted if an upper-rank terminal in a wake-up state other than the sleep-declaration terminal is present. The processor is configured to determine that the sleep by the sleep-declaration terminal is not accepted in the first sleep determination if the upper-rank terminal in the wake-up state other than the sleep-declaration terminal is not present. The processor is configured to cause the wireless communicator to transmit a sleep-prohibition packet to the sleep-declaration terminal when the processor determines that the sleep by the sleep-declaration terminal is not accepted.

Abstract: An imaging apparatus includes: an imager configured to generate an imaging signal; a transmission channel configured to connect a controller and the images; a superimposed. signal generator that is arranged on a proximal end side of the transmission channel, the superimposed signal generator being configured to generate a superimposed signal by superimposing a pulsed data signal and a pulsed reference clock signal, and output the generated superimposed signal to the transmission channel; a first extractor that is arranged on a distal end side of the transmission channel, the first extractor being configured to extract the data signal and the reference clock signal from the generated superimposed signal; and a second extractor that is arranged on the distal end side of the transmission channel, the second extractor being configured to extract the negative voltage from the generated superimposed signal.

Abstract: An imaging device according to an embodiment includes an imaging circuit, a variable-voltage power source, a light-emitting element, a constant current-driving circuit, and a control circuit. The control circuit is configured to turn on the light-emitting element in a period during which the imaging circuit performs imaging. The control circuit is configured to turn off the light-emitting element in a period during which the imaging circuit does not perform imaging. The control circuit is configured to control voltage applied to the light-emitting element by the variable-voltage power source on the basis of voltage of an input terminal of the constant current-driving circuit when the light-emitting element is turned on. The control circuit is configured to control the variable-voltage power source and apply predetermined voltage greater than or equal to compliance voltage of the light-emitting element to the light-emitting element when the light-emitting element is turned off.

Abstract: An endoscope apparatus includes an illumination device emitting a plurality of lights with different wavelength bands at least two different timings in time series, and a processor including hardware. The plurality of lights includes a first light and a second light. The processor is configured to generate a highlighted image in which a specific structure under a mucus membrane is highlighted, based on a plurality of images obtained by the emission of the plurality of lights. The illumination device emits the first light and the second light continuously. The first light has a first wavelength band corresponding to a luminance component of the highlighted image. The second light has a second wavelength band that enables capturing of an image of the specific structure with higher contrast than the first light.

Abstract: Provided is an observation device including: a stereo image-acquisition optical system that acquires images of cells floating in a culture fluid inside a culture vessel; and an analyzer that calculates a cell density of the cells on the basis of the images acquired by the stereo image-acquisition optical system, wherein the analyzer identifies a three-dimensional position of each of the cells included in the images and calculates the cell density on the basis of the number of cells present within a predetermined three-dimensional region.

Abstract: An endoscope apparatus includes: an illumination device emitting first to third illumination light; an imaging device capturing an image using return light from a subject; and a processor including hardware. The processor generates a display image based on first to third images captured with the first to third light emitted. A first absorbance difference (difference in absorbance of ?-carotene between the first and second illumination light) is smaller than a second absorbance difference (difference in absorbance of metmyoglobin between the first and second illumination light). A peak wavelength of the third illumination light differs from peak wavelengths of the first and second illumination light. Based on the first to third images, the processor generates the display image that displays a thermally denatured muscle layer, a fat layer, and a muscle layer that is not thermally denatured of the subject, in an identifiable manner from each other.

Abstract: An endoscope distal end structure includes: an imaging module configured to generate an image signal and transmit the generated image signal using a cable; a frame having a through hole, the frame being configured to hold the imaging module with the imaging module being inserted into the through hole from an insertion port; a first adhesive that is arranged in a gap between an outer circumference of a proximal end part of a resin seal and an inner circumferential surface of the frame on a side of the insertion port; and a second adhesive that is arranged in a gap between the inner circumferential surface of the frame at a position in which the through hole is formed and the imaging module that is inserted into the through hole.

Abstract: An endoscope system includes an endoscope and a distal end hood. The endo scope includes an insertion portion, a first optical system, a second optical system, an optical component, and a protruding member. The distal end hood includes a frame and a filter including a light transmission body and a support member provided at a non-contact position with the protruding member to support the light transmission body.

Abstract: An illumination optical system includes: a light source; a light guide member that includes an input end and a plurality of output ends, optically guides light entering the input end, and outputs the light from the plurality of output ends; and a deflecting element that deflects the light from the light source toward the input end and changes a position where the light enters an end surface of the input end. The end surface of the input end is divided into a plurality of areas. Light entering one of the areas is output from one of the output ends different from an output end from which light entering another one of the areas is output.

Abstract: An image processing apparatus includes a processor including hardware. The processor is configured to: calculate a hue of each pixel of a stained image that is input from outside; execute classification on each pixel of the stained image based on the hue; modulate a color tone of the pixel of the stained image in each class having undergone the classification; combine a plurality of input images to generate a combined image; calculate a color distribution of each pixel of the combined image; execute classification on each pixel of the combined image by using the color distribution; and calculate an average hue of each class having undergone the classification on each pixel of the combined image based on the color distribution and a classification result of classification of the combined image so as to calculate a standard hue.

Abstract: An endoscope apparatus includes: an illumination device emitting first to third illumination light; an imaging device capturing an image using return light from a subject; and a processor including hardware. The processor generates a display image based on first to third images captured with the first to third light emitted. A first absorbance difference (difference in absorbance of ß-carotene between the first and second illumination light) is larger than a second absorbance difference (difference in absorbance of metmyoglobin between the first and second illumination light). A peak wavelength of the third illumination light differs from peak wavelengths of the first and second illumination light. Based on the first to third images, the processor generates the display image that displays a thermally denatured muscle layer, a fat layer, and a muscle layer that is not thermally denatured of the subject, in an identifiable manner from each other.

Abstract: An optical unit includes a movable section that holds a movable lens group and includes a rotation restricting section, a fixed section that holds a fixed lens group and has specific permeability larger than 1.0, n thinned-down sections being provided in the fixed section, and a voice coil motor including an n magnet sections disposed at every (360/n)° around a center axis of the movable section and a coil section disposed in the fixed section. The n magnet sections are respectively housed in n thinned-down sections in a noncontact manner. The n thinned-down sections are formed in asymmetrical positions different from every (360/n)° around the center axis.

Abstract: An endoscope system includes a light source configured to generate either one of first illumination light and second illumination light, an image pickup apparatus configured to obtain an image by picking up an image of an object, and a processor. The processor is configured to make an instruction to set an observation mode of the endoscope system at either one of a first observation mode and a second observation mode, detect an observation state at a time of observing the object based on a feature value calculated from pixel values included in pixels forming a first image, and invalidate an instruction to set the observation mode of the endoscope system at the second observation mode when the observation state at the time of observing the object is not an appropriate observation state.

Abstract: An endoscope apparatus includes an endoscope having a lens, an actuator, and an endoscope memory, and a processor having a driving circuit and a processor memory and connected to the endoscope. The processor judges whether there is abnormality or not in at least one of the actuator or the driving circuit by using information on a signal transmitted from the driving circuit to the actuator, first judgement information read from the endoscope memory, and second judgement information read from the processor memory.

Abstract: A driving force transmission mechanism for an endoscope includes an insertion portion, an operation portion, an electric motor, an output member, a rotation transmission member, an inside plane, a first plane, a second plane and a third plane configured to come into contact with a proximal end of the output member when at least part of the second plane comes into contact with the inside plane to thereby restrict the rotation transmission member from moving toward the distal end side in the axial direction with respect to the output member.

Abstract: A vent control valve for an endoscope includes a shaft body including a pin fixing portion, and a vent hole including a long hole with an opening provided in one end surface, and a long hole communication hole configured to cause an outside and an inside of the long hole to communicate with each other, a tubular member including a shaft body hole configured to house the shaft body, and a cam groove in which the cam pin is disposed, a rotational member including a tubular member hole where the tubular member is disposed, a cam pin groove where the cam pin is disposed, and a plurality of engaging holes, and a cylindrical housing member including an attaching portion fixedly provided in a casing through-hole, and a housing hole communicating with the internal space.

Abstract: A distal end hood that is detachably mounted on a distal end portion of an endoscope includes a groove having a groove bottom portion formed in a ring shape over an entire circumference at a predetermined position on an outer peripheral surface of the distal end hood, a plurality of projections, which are provided on an inner peripheral surface on one side sandwiching the groove and in each of which a tapered surface is formed, the tapered surface reducing a wall thickness by continuously increasing a diameter of an inner peripheral surface from the groove side toward a distal end surface of the distal end hood, and a locking portion provided on a side opposite to the projections sandwiching the groove and locked to the distal end portion of the endoscope, in which the projections are configured to bend at the groove bottom portion toward a proximal end side.

Abstract: An endoscope includes an optical module, the optical module including an optical element including a light emitting surface, an external electrode being disposed, out of a first region and a second region obtained by dividing the light emitting surface substantially in half, only in the first region, a wiring board including a first main surface where the optical element and a bonding electrode are disposed, a bonding wire connecting the external electrode and the bonding electrode to each other, a ferrule into which the optical fiber is inserted, a frame including an upper plate where the ferrule is disposed, including a side plate fixed to the first main surface, including an inner section housing the optical element and a side surface including an opening, and a transparent resin disposed in the inner section, wherein the upper plate is inclined at a predetermined inclination angle to the first main surface.

Abstract: A tap for producing and disconnecting a fluidic connection between at least two connector parts. The tap includes one connecting and disconnecting element, a manual actuating element for rotating the connecting and disconnecting element. The manual actuating element and the connecting and disconnecting element are coupled mechanically. The tap includes a main body having at least one connector part and an interior space for receiving the connecting and disconnecting element, the interior space includes a contact surface for being brought into contact with the connecting and disconnecting element.

Abstract: An image processing apparatus generates a left-eye viewpoint image and a right-eye viewpoint image, detects one or more pairs that are each a pair of a partial image of the left-eye viewpoint image and a partial image of the right-eye viewpoint image that are similar to each other, performs, for each of the one or more pairs, image adjustment processing for adjusting the three-dimensionality of one of or both of the partial images of the left-eye and right-eye viewpoint images, displays the left-eye viewpoint image or the left-eye viewpoint image after the image adjustment processing in a manner such that this image is capable of being observed with a left eye, and displays the right-eye viewpoint image or the right-eye viewpoint image after the image adjustment processing in a manner such that this image is capable of being observed with a right eye.

Abstract: An imaging device that includes at least one lens that collects light incident from an object; an imaging sensor that receives light from the lens and converts it to an electric signal; a multi-layer substrate electrically connected to the imaging sensor that includes electronic components and conductive layers and vias; and a collective cable including at least one coaxial cable. A core connection electrode connected to a core of the coaxial cable is formed on a first surface of the multi-layer substrate, the first substrate intersecting with a height direction of the multi-layer substrate. A shielded-wire connection electrode connected to a shielded wire of the coaxial cable is formed on a side surface of the multi-layer substrate adjacent to the first surface. The side surface faces and the cable extend to a proximal end.

Abstract: An information-processing apparatus includes a display displaying an image; a memory recording voice data having a voice pronounced at each of plural observation points of the image; a gaze detector generating gaze data by detecting a gaze of a user; a voice input device generating voice data associated with a time axis identical to that of the gaze data by receiving a voice of the user; and a processor to analyze a attention period where a attention degree of the gaze to each of the plural observation points is a predetermined value or greater, based on the gaze data, set a period where the voice is pronounced with respect to the voice data as an important voice period, based on the voice data, and generate calibration data based on a time lag between the attention period and the important voice period.

Abstract: A medical display apparatus includes: a display unit configured to display an endoscope image; at least one video signal input circuit to which video signals related to the endoscope image can be inputted from an external medical instrument; a video processing circuit configured to generate a video reflecting a display setting specified for each of the video signals; and first and second processors, the first processor determines an endoscope type based on a mask pattern of the endoscope image related to each of the inputted video signals, and the second processor designates a display set value for each of video signals related to different endoscope images to the video processing circuit according to a determination result.

Abstract: An insertion device includes a long and thin insertion section, a rotating housing that is provided to be rotatable about a longitudinal axis, a drive shaft that is connected to a motor rotating the rotating housing, and that transmits a rotation of the motor, a rotor that is provided at a distal-end side of the drive shaft and that is provided to be movable in relation to the rotating housing in axial direction of the insertion section, and that transmits the rotation to the rotating housing via a coating of the insertion section, a sensor that detects that the rotor moves a predetermined amount in either forward or backward direction relative to the axial direction of the insertion section, and a control unit that controls, according to the detection by the sensor, a state of the motor including a positive rotation, a negative rotation, and rotation halt.

Abstract: A three-dimensional endoscope comprises a video signal input portion to which a first video signal is obtained by a first imaging system and a second video signal is obtained by a second imaging system are inputted. A video signal identification portion that identifies a two-dimensional video signal and a three-dimensional video signal are obtained from the video signal input portion. An image condition detection portion that when the video signal identification portion has detected the two-dimensional video signal, analyzes a display area of a two-dimensional image to detect a foggy region. An image combining portion that, when the image condition detection portion has detected a foggy region in a video of at least one of the first imaging system and the second imaging system, combines both of the first video signal and the second video signal to generate a composite image in which fogginess of the foggy region being eliminated.

Abstract: A medical device according to one embodiment of the present invention includes: a vibration transmission member that comprises a node position of vibration and an area including the node position and a portion at a distal end side relative to the node position, and to which the vibration is transmitted; a first coating that covers a side of the node position of the area; and a second coating that covers a distal end side relative to the first coating of the area and has a thickness smaller than that of the first coating.

Abstract: An observation device, comprising an image sensor that forms images of a specimen and outputs an image signal, an AF detection circuit that calculates evaluation values based on the image signal, and a focus control circuit that controls focus position based on the evaluation values, wherein the AF detection circuit calculates a plurality of evaluation values based on signals relating to a plurality of frequency bands of the image signal, and the focus control circuit controls focus position based on maximum value or minimum value of the plurality of evaluation values.

Abstract: An image blurring correction apparatus includes: an angular-velocity sensor that detects an angular velocity; and a processor. The processor includes: a first-panning detection section that detects first panning on the basis of the angular velocity; a LPF processing section that performs LPF processing on the angular velocity; a second-panning detection section that detects second panning that has a panning velocity that is lower than that of the first panning on the basis of a processing result of the LPF processing section; a HPF processing section that performs HPF processing on the angular velocity; a calculation section that calculates an image-blurring-correction amount on the basis of a detection result of the first-panning detection section or a detection result of the second-panning detection section, and a processing result of the HPF processing section; and a drive circuit that drives an image-blurring-correction mechanism on the basis of the image-blurring-correction amount.

Abstract: An imaging device that is capable of having a fisheye lens attached to a main body, and that is capable of shooting digital images, comprising, an image sensor on which photometric domains and/or AF region are arranged, a lens communication circuit that performs communication with a lens that has been attached and acquires lens information, and a processor that detects whether or not a lens that has been attached is a circular fisheye lens based on the lens information, and, if it has been determined that the lens is a circular fisheye lens, restricts the photometric domains and/or AF regions based on an image circle of the circular fisheye lens.

Abstract: A treatment device includes a vibrator capable of ultrasonically vibrating, a front mass portion having a first resonance frequency and connected to the vibrator in a manner capable of transmitting ultrasonic vibration, a treatment probe configured to treat a subject and having a second resonance frequency that is higher than the first resonance frequency of the front mass portion, and a connection portion connecting a distal end surface of the front mass portion and a proximal end surface of the treatment probe by a pressing force, and serving as an antinode position when vibrating at the first resonance frequency.

Abstract: An imaging apparatus includes a processor and two acceleration sensors located at different positions on a first plane orthogonal to the optical axis of an image shooting optical system.

Abstract: An endoscope system according to the present invention includes: an illumination unit that radiates illumination light onto a subject, the illumination light having a spatially non-uniform intensity distribution including a light section and a dark section in a beam cross section orthogonal to an optical axis; an imaging unit that images an illumination image of the subject irradiated with the illumination light; and a separation processor that generates two separate images from the illumination image. Among intensity values of pixels within the illumination image respectively corresponding to the light section, the dark section, and a section having intermediate intensity between the light section and the dark section, the separation processor generates the two separate images based on at least two of the intensity values.

Abstract: An illumination apparatus generates an interference fringe. An input arm receives an input light beam from a light source. A splitter splits the input light beam that has passed through the input arm into a first output arm and a second output arm. A phase modulator changes a phase difference between the output light beams of the first output arm and the second output arm. A phase detector detects the phase difference between output light beams respectively output from the first output arm and the second output arm based on a return light beam generated by combining a first reflected light beam and a second reflected light beam respectively reflected by ends of the first output arm and the second output arm.

Abstract: An endoscope system includes an insertion section, a bending portion provided in the insertion section, including a distal side and a proximal side, and deformable into an arcuate shape by bending in at least one predetermined direction, a distal-side bending portion, a proximal-side bending portion, a first variable stiffness section provided in the distal-side bending portion and configured to change a stiffness of the distal-side bending portion, a second variable stiffness section provided in the proximal-side bending portion and configured to change a stiffness of the proximal-side bending portion, and a controller for performing control to make a stiffness of the first variable stiffness section higher than a stiffness of the second variable stiffness section.

Abstract: An endoscope apparatus having: an insertion portion extending along a longitudinal axis; a roller driven by a drive force to rotate around the longitudinal axis; and a cover member covering the roller, wherein the cover member has: a base layer having: an outer surface direction side; and an inner surface direction side arranged to contact the roller, wherein portions of the base layer covering the roller as the roller rotates around the longitudinal axis of the insertion portion elastically elongate in an outer surface direction of the insertion portion, and wherein the base layer has a secondary material being a first color at a first temperature range and a second color at a second temperature range; and an external coating layer formed on at least one of the outer surface direction side and the inner surface direction side of the base layer.

Abstract: An apparatus for insertion into a body through a working channel of an endoscope includes a catheter including a dilator, a guide tube disposed in a lumen of the catheter, and a handle including a puncturing actuator operatively coupled to the proximal end of the guide tube. The dilator may be a cautery device and/or a balloon. The apparatus may also include a stylet needle that includes a cutting distal end for puncturing tissue and extends through a lumen in the guide tube. The handle may further include a stopper detachably coupled to the puncturing actuator to fix a position of the puncturing actuator on the handle, and moveable on the handle independently of the puncturing actuator when detached from the puncturing actuator. The disclosed embodiments also include a method for forming a passageway in a wall of a hollow body organ using the apparatus.

Abstract: An objective optical system includes in order from an object side, a front unit having a positive refractive power and a rear unit. The front unit includes in order from the object side, a first lens having a negative refractive power, a second lens having a positive refractive power, and a third lens having a positive refractive power. The rear unit includes one lens or a plurality of lenses and the following conditional expression is satisfied: |(FLag?FLaC)/FLad|<0.05??(1) where, FLad denotes a focal length for a d-line of the front unit, FLag denotes a focal length for a g-line of the front unit, and FLaC denotes a focal length for a C-line of the front unit.

Abstract: An image pickup apparatus for endoscope includes: an imager, an optical device, an optical module on which the optical device is mounted, an optical fiber optically coupled with the optical device, a ferrule having an insertion hole into which the optical fiber is inserted, and a wiring board including a first rigid board, a second rigid board and a flexible intermediate board. The ferrule is fixed to the second rigid board or a first principal surface of the optical module. A first side surface of the optical module is glued to the first rigid board, and the first principal surface is glued to the second rigid board.

Abstract: An illuminating device includes: a light source; a light guide element; and a deflecting element that has a deflecting surface for deflecting illumination light coming from the light source towards a light-incident end of the light guide element and that makes the illumination light incident on the light-incident end at incident angles according to deflection angles. The deflecting element is configured to change, between a first deflection angle and a second deflection angle, the deflection angle of the illumination light at each position on the deflecting surface and deflects the illumination light simultaneously at the first deflection angle and at the second deflection angle. A first portion deflected at the first deflection angle and a second portion deflected at the second deflection angle are both incident on the light-incident end.

Abstract: An image pickup apparatus includes: a first member, in which a plurality of optical members are laminated; a second member including an image pickup device; and a third member including a spacer and a frame, a first through-hole that penetrates through the spacer and a second through-hole that has a larger sectional area in a direction that perpendicularly intersects an optical axis than a sectional area of the first through-hole and that penetrates through the frame are provided in the third member, the third member is glued to the first member, the second member is disposed in the second through-hole, and a front surface of the second member abuts on a second main surface of the spacer, and the frame is a frame body that shields light that is incident on the second through-hole from an image pickup side surface that is a side surface of the second member.

Abstract: An external mechanism for endoscope includes: an abutment surface that is a first surface configured to cover a knob arranging surface at which a second bending operation knob is arranged in an operation portion of an endoscope; a wheel configured to engage with the second bending operation knob arranged at the knob arranging surface; a motor configured to generate a driving force for rotating the wheel; a housing case that houses the wheel and the motor; a case attaching/detaching and fixing section for detachably attaching the housing case to the operation portion of the endoscope; and a locking member provided at the housing case and configured to be locked on the knob arranging surface of the endoscope and a large-diameter portion end face adjacent to the knob arranging surface in the operation portion of the endoscope.

Abstract: An endoscope includes: an insertion portion to be inserted into a subject; a distal end portion that is arranged on a distal end side of the insertion portion, the distal end portion including as imager and an actuator; an operating portion that is arranged on a proximal end side of the insertion portion, the operating portion including a relay substrate that is electrically connected to the imager and the actuator via a first cable; a connector substrate that is electrically connected to the relay substrate via a second cable; and a proximal end portion including a connector. The first cable includes a first actuator signal line. The second cable includes a second actuator signal line. The second actuator signal line has a larger outer diameter than an outer diameter of the first actuator signal line.

Abstract: An endoscope apparatus that includes a storage memory storing first authentication information, a transmitter/receiver that performs communication with an endoscope, and an operational device. The operational device performs a process including acquiring the first authentication information stored in the storage memory and acquiring second authentication information stored in the endoscope connected to the endoscope apparatus from the endoscope. The operational device further performs determining whether the acquired first and second authentication information match each other, and limiting execution of at least some functions among a plurality of functions to be executed in cooperation with the endoscope in response to determining that the first and second authentication information do not match each other.

Abstract: An endoscope includes: a barrel having an opening of a through hole on an outer surface; a lens inserted into the through hole and having a distal end surface which protrudes from the outer surface; a first resin disposed between a wall surface of the through hole and a side surface of the lens; and a second resin disposed on a surface of the first resin, a portion of the barrel disposed around the opening, and an entire circumference of an outer peripheral portion of the distal end surface of the lens, the second resin forming a protruding portion which protrudes from the distal end surface of the optical member, containing light blocking particles, and having a larger fracture toughness value than the first resin.

Abstract: An endoscope includes: a lens barrel having an opening of a through hole on an outer surface of the lens barrel; a lens inserted into the through hole and having a distal end surface which is disposed in a protruding manner from the outer surface; a first resin disposed between a wall surface of the through hole and a side surface of the lens; and a second resin disposed on a surface of the first resin, a portion of the lens barrel around the opening and an entire circumference of an outer peripheral portion of the distal end surface of the lens, the second resin containing rubber and light blocking particles and having an elastic modulus smaller than an elastic modulus of the first resin.

Abstract: An endoscope system includes an insertion section, a first active bending section, a second active bending section, a position-information acquiring section, a first control section, a second control section, and a third control section. The first control section controls, based on a detection result of the position-information acquiring section, a first driving section of the first active bending section such that a first end portion of a first tubular section of the first active bending section moves away from a center point. The first control section controls a second driving section of the second active bending section such that a second end portion of a second tubular section of the second active bending section approaches the center point. The third control section controls the first driving section such that force in a direction of bending the first tubular section in a first bending operation acts on the first end portion.