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.

The present disclosure relates to an apparatus and method for correcting rotational error during use of an oblique-viewing endoscope. Specifically, the present disclosure relates to a fast calibration process wherein a new approach is employed in estimating a center of rotation of a plane of an image. Moreover, the approach, allows for updating of a camera matrix during use.

The endoscope optical system consists of: a first lens group that is used only for front viewing; a plurality of second lens groups that have a negative lens at a position closest to an object side and are used only for side viewing; a third lens group that is commonly used in front viewing and side viewing; and a synthesizing section that synthesizes the rays emitted from the first lens group and the rays emitted from the second lens groups and causes the synthesized rays to be incident into the third lens group. The rays emitted from the first lens group and the rays emitted from the second lens groups are imaged on a same plane.

There is provided an imaging control device, an imaging control method, a program, and an imaging system that enable easy change of a direction in which an image of a subject is captured in a case where imaging is performed using an optical member whose observation optical axis is inclined with respect to a central axis. The imaging control device includes: a rotation axis setting unit that sets a rotation axis on the basis of a pivot point and a point of interest on the subject, the pivot point serving as a fulcrum of the rod-shaped optical member whose observation optical axis is inclined with respect to the central axis and being not positioned on the observation optical axis; and a posture control unit that rotates the optical member around the rotation axis. The present technology can be applied to, for example, an endoscope system.

An optical endoluminal far-field microscopic imaging catheter comprises a light generating system, a first light delivery conduit for propagating light generated by the light generating system and a light distributor configured to redirect light propagated by the delivery conduit into a direction of an object to be imaged. A discriminator is configured for capturing light reflected from the object incident on a window of the discriminator from a particular direction and transmitting only the light captured from the particular direction to a second light delivery conduit. A drive mechanism is configured to sweep the window through a plurality of directions in a predictable pattern for matching each light capture event in the window with a direction of the window during the event. An analyzer matches the direction of the window with an associated light capture event and generate a visible image based on a mosaic of the captured light.

An oblique-viewing endoscope includes: an endoscope axis that is a longitudinal direction of an endoscope distal end portion; an optical axis of a lens, the optical axis being an observing direction, the endoscope axis and the optical axis being disposed to form a predetermined inclination angle with respect to each other; a rectangular semiconductor package including an imaging sensor configured to convert an optical image formed by the lens to an image signal, and a terminal formed on a back face of the semiconductor package; and a rigid substrate including a semiconductor package mounting area in which the semiconductor package is mounted, an electronic component mounting area in which an electronic component is mounted, and a cable mounting area in which a cable is mounted.

An endoscope including: an elongated shaft and an optical system disposed in the shaft. The optical system includes at least one prism. The prism is mounted in a prism holder. The prism holder having first and second stops for aligning the prism in at least first and second directions, respectively. Wherein the first stop forms a planar stop surface against which a first planar surface of the prism rests, and the second stop forms a linear stop contour against which a second planar surface of the prism rests.

To improve the imaging while simultaneously simplifying the manufacturing of a rigid endoscope (2), an inversion system (1) is used as a relay optical unit for the image transfer from an objective (3) to a proximally arranged camera unit (4) of the endoscope (2). The inversion system has an odd number of a first type A of rod lenses (7) and an even number of a second type B of rod lenses (7), which are each arranged on half of the inversion system (1) with respect to a center plane (9) of the inversion system (1).

Endoscopes and methods of their use, where the endoscopes provide a low profile or cross-section which facilitates introduction through small body passages, such as patient's cervix, and into body cavities, such a patient's uterus.

An ablation catheter for performing a treatment under direct visualization of a region to be treated includes a catheter body and an energy emitter that is movable relative to the catheter body. The ablation catheter includes first and second imaging devices for providing direct visualization of the region to be treated, with the first imaging device being fixed relative to the catheter body. The first and second imaging devices can be in the form of first and second imaging chip endoscopes.