This optical adapter for an endoscope includes a plurality of incident optical systems eccentrically disposed with each other, an optical axis of each of the plurality of incident optical systems being spaced away from an axis of the optical adapter for an endoscope with an interval; a brightness stop including a plurality of apertures corresponding to the plurality of incident optical systems respectively; a relay lens configured to relay incident light entering each of the plurality of incident optical systems to the corresponding aperture; and a distal light-shielding portion which is disposed more distally than the relay lens, wherein the plurality of incident optical systems, the relay lens, and the brightness stop are disposed in this order from a distal end side toward a proximal end side of the optical adapter for an endoscope along an incident direction of the incident light.

A camera head for an endoscope includes: a casing grasped by a user and detachably connected to an insertion unit inserted into a subject, the insertion unit taking an object image from the subject; an optical element having translucency and configured to seal the casing by being provided in the casing; an imaging element provided in the casing and configured to capture the object image taken into the casing through the optical element; and a dew condensation forming unit provided in the casing and having a smaller thermal resistance value than the optical element, the dew condensation forming unit functioning as a transmission path of heat between inside and outside of the casing.

In one embodiment, a method for a stereo endoscope includes receiving electromagnetic radiation through an inner protective window; focusing the electromagnetic radiation with a left optical component toward a left pixel array of a stereo image sensor along an optical axis of the left optical component parallel with but offset from a center axis of the left pixel array; and focusing the electromagnetic radiation with a right optical component toward a right pixel array of the stereo image sensor along an optical axis of the right optical component parallel with but offset from a center axis of the right pixel array. The left pixel array and the right pixel array are offset from the center optical axis of the stereo endoscope to provide stereo image convergence.

An optical system for use with a stereo video endoscope with a fixed lateral viewing direction. The optical system including: a laterally-viewing distal optical assembly; and a proximal optical assembly, the distal optical assembly and proximal optical assembly jointly establishing a beam path, the proximal optical assembly including: a left channel lens system; and a right channel lens system similarly configured to the left channel lens system; wherein the distal optical assembly establishes an optical axis and is configured to couple incident light along the beam path from an object space into the left channel lens system and into the right channel lens system of the proximal optical assembly; and the optical system comprises an angle-selective optical element with a surface oriented perpendicular to the optical axis of the distal optical assembly, the surface being located in the beam path and coated with an incidence-angle-selective dielectric coating.

An optical system for a stereo video endoscope including: first and second lens system channels each having optical elements in identical configurations, the optical elements being arranged in a same position along first and second optical axes, respectively, an optical axis of first and second optical elements coincide with the first and second optical axes, respectively, first and second cross-sectional areas of the first and second optical elements are inscribed in first and second circumferential circles, respectively, centers of first and second circumferential circles each coincide with the first and second optical axes, respectively, to define a maximum radius of the first optical element and the second optical element, the first and second circumferential circles overlap one another, and circumferential shapes of the first and second optical elements deviate from the first and second circumferential circles circumscribing them such that the first and second optical elements do not contact.

Computer-assisted surgical systems and methods provide intraoperative playback of and interaction with recorded video images and/or a 3D model while displaying current video images. The methods and related surgical systems involve capturing, by a two-dimensional (2D) or three-dimensional (3D) video camera, current video images and recording the captured video images. A user interface displays the current video images and the recorded video images and/or the 3D model and enables a user to interact with either or both of them.

A medical control device according to the present disclosure includes an image processing section adapted to generate a captured image on the basis of an electric signal generated by an imaging device that captures an image of a subject, and a light source control information generation section adapted to generate control information for controlling a light quantity distribution of illumination light, according to a brightness distribution of the captured image.

A flexible high resolution endoscope is provided herein. The endoscope comprises: a plurality of optical fiber bundles; a plurality of lenses in a one-to-one relationship with the plurality of optical fiber bundles; and, a plurality of cameras in a one-to-one relationship with the plurality of optical fiber bundles, each respective optical fiber bundle, of the plurality of optical fiber bundles, having a respective lens, of the plurality of lenses, located at a respective distal end, and a camera, of the plurality of cameras, located at a respective proximal end, the plurality of optical fiber bundles being coupled together at a common distal end, and otherwise being uncoupled from one another, a bending radius of the endoscope defined by a largest respective bending radius of each of the plurality of optical fiber bundles.

An imaging condition set in a first region of a three-dimensional model of a subject and an imaging condition set in a second region of the three-dimensional model are different from each other. A processor of an observation device determines whether or not the imaging condition that has been set in the first region or the second region including a position on the three-dimensional model is satisfied. The position is identified on the basis of a position of an imaging device and a posture of the imaging device. The processor displays observation information on a display on the basis of a result of determination. The observation information represents whether or not the first region or the second region including the position on the three-dimensional model has been observed.

A family of endoscopes includes a non-zero degree endoscope and a zero degree endoscope. The zero degree endoscope includes a first image capture unit mounted in a distal portion of the zero degree endoscope with a lengthwise axis of the first image capture unit substantially parallel to a lengthwise axis of that distal portion. The non-zero degree endoscope includes a second image capture unit mounted in a distal portion of the non-zero degree endoscope with a lengthwise axis of the second image capture unit intersecting a lengthwise axis of that distal portion at a non-zero angle. The first and second image capture units have substantially identical non-folded optical paths.