An image-acquisition apparatus is provided with: an imaging optical system; and an image-acquisition device that acquires parallax images, wherein the imaging optical system is provided with a first negative lens group, a first positive lens group, and a second positive lens group, wherein the first positive lens group and the first negative lens group are disposed along a common center axis, wherein the second positive lens group is provided with two positive lens groups that are disposed next to each other in a parallax direction on either side of the common center axis and that individually have center axes, wherein two aperture stops having openings, wherein the first positive lens group has only one moving lens group that is moved, and wherein all of remaining lens components in the imaging optical system, excluding the moving lens group, remain still.

In order to acquire height information regarding a subject disposed on the internal surface of an elongated tubular member, an image processing apparatus according to the present disclosure, includes a processor the processor including hardware and configured to perform the steps of receiving a first image and a second image acquired from a subject using an optical system having a field of view in a direction of at least about 90 to a central axis of the optical system, the first image acquired at a first position, the second image acquired at a second position, the second position different from the first position along the central axis; and calculating a distance between the subject and the central axis of the optical system, based on a distance between the first position and the second position, and based on the corresponding points in the third image and in the fourth image.

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.

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.

An endoscope including: an optical filter arrangement having: a holder; and an optical filter having one of different filter properties in different directions or multiple optical filters with different filter properties, the optical filter being arranged in the holder to rotate about an axis of rotation in at least one beam path of the endoscope in a direction of light incidence in or behind an objective of the endoscope and in front of an image capturing unit or an eyepiece; wherein the optical filter arrangement is configured to change from a first filter property to a second filter property when the optical filter is rotated by 90 about the axis of rotation from a first target rotational position to a second target rotational position.

In an endoscope device, an imaging device sequentially reads pixel signals from at least some of a plurality of pixels row by row during a first period. A control unit causes a light source to generate illumination light during a second period. The second period is at least a part of a period other than the first period. The control unit causes the light source to stop the generation of the illumination light during a third period. The third period is all of a period other than the second period. The control unit causes a switching unit to start switching of an imaging condition during the third period and complete the switching of the imaging condition during the third period.

An endoscopic camera has two or more cameras positioned at a distal end, positioned to provide partially overlapping fields of view. The cameras communicate captured digital images the length of the flexible endoscope, where they may be saved and processed to provide additional imaging features. With partially overlapping images from two or more cameras, image processing can provide panoramic images, super resolution images, and three-dimensional images. One or more of these image modes may also be enhanced to provide a virtualization window that displays a portion of a larger or higher resolution image. The virtualization window displays the selected area of the image, and may be moved or zoomed around the image to provide a virtual endoscope repositioning experience, where the endoscope remains statically positioned but the virtualization window presents a sense of movement and navigation around the surgical area.

An exemplary medical imaging system includes an imaging device that includes a visible light camera configured to obtain image data representative of a two-dimensional visible light image of a scene and a depth sensor separate from the visible light camera and configured to obtain depth data representative of a depth map of the scene. The medical imaging system further includes a image processing system communicatively coupled to the imaging device and configured to generate, based on the image data and the depth data, a right-side perspective image of the scene and a left-side perspective image of the scene that together form a stereoscopic image of the scene.

An endoscope device includes an imaging optical system including two incident light paths formed by two optical systems respectively having optical axes eccentric with respect to an imaging center of an imaging element, an optical action member configured to change a convergence angle, and a processor configured to control a state of the optical action member in the imaging optical system. The processor changes the convergence angle by controlling the state of the optical action member in the imaging optical system.

An optical module for endoscope includes an optical element including an external terminal, a housing in which an insertion hole into which an optical fiber is inserted is present and has a bottom and a bottom surface made of a transparent material, and a sealing plate that is bonded to the housing. The optical element is stored in an upper recess of the housing, the external terminal and a bonding electrode are connected using a bonding wire, and a wire recess in which a part of the bonding wire is stored is present in a bottom surface of the upper recess.