An endoscope insertion observation apparatus includes a processor designed to perform functions including: detecting an insertion state of an insertion portion of an endoscope that is insertable into and extractable from a subject; determining whether or not the insertion portion has reached a second site in the subject from a first site in the subject and/or whether the insertion portion has reached the first site from the second site in the subject based on a detection result of the insertion state; and calculating a duration of movement of the insertion portion from the first site to the second site after determining that the insertion portion has reached the second site, or a duration of movement of the insertion portion from the second site to the first site after determining that the insertion portion has reached the first site.

A rigid scope includes: an objective lens composed of, in order from an object side to an image side, a first lens group having a negative power, a second lens group including a lens having a positive power, and a third lens group including two or more lenses; a relay lens arranged on the image side of the objective lens; a first lens frame that fixes in place a front group including at least the first lens group and the second lens group of the objective lens; and a second lens frame that fixes in place a rear group including one or more remaining lenses constituting the objective lens and at least part of the relay lens.

The present technology relates to an endoscope system, an endoscope control method, and a program that allow AF processing to be performed without deterioration in accuracy.

Provided are a drive unit that drives a lens, a measurement unit that measures a position of the lens, and a control unit that controls focusing, the control of the focusing including setting a control amount of wobbling at the time of the focusing on the basis of first hysteresis that is held and second hysteresis that is measured upon energization. The measurement unit includes a sensor that measures the position of the lens by detecting passage of the lens. The present technology is applicable to a medical observation device such as an endoscope or a microscope.

An optical system includes a first relay rod of a first material, a second relay rod of a second material, different from the first material, and a lens between the first and second relay rods.

A dynamic imaging system for use with endoscope, or as an element of a video endoscope, utilizes path length differences and/or a variable aperture size to expand a usable depth of field and/or improve image resolution in an area of interest in the image field. In some implementations, the imaging system utilizes a variable aperture in conjunction with unequally spaced image sensors placed downstream from a beam splitter. An imaging system captures multiple focal planes of an image scene on separate sensors. A variable aperture permits the capture of enhanced resolution images or images with longer depths of field. These differently focused images and/or images with different resolutions and depths of field are then combined using image fusion techniques.

A relay optical system 20 for a rigid endoscope comprises a lens fixing frame 21 and a plurality of lenses 22. The lens fixing frame 21 has a plurality of tubular bodies 26. The plurality of tubular bodies 26 are joined coaxially to each other. The plurality of lenses 22 are located at positions other than a joint position jp of the tubular bodies 26 in an axis direction of the lens fixing frame 21. The plurality of lenses 22 are located in the lens fixing frame 21 so as to have a coincident optical axis. The plurality of lenses 22 do not include a cemented lens.

A system comprises alight source to provide light, an optical system comprises focusing optics to focus the light onto a focal surface, a detector to measure returning light that is reflected off of a three dimensional object, a translation mechanism to displace the focal surface along an imaging axis defined by the optical path, and one or more processor. The one or more processor is to generate measurement data comprising coordinates of a plurality of surface points of the three dimensional object based on the measured returning light; adjust the coordinates of the subset of the plurality of surface points along up to three axes to correct the measurement data so as to remove inaccuracies caused by changes in magnification at the focal surface; and generate a three dimensional model of the three dimensional object using corrected measurement data.

An endoscopic probe extending from a proximal end to a distal end thereof, and configured to be inserted in a tubular lumen to observe a sample is disclosed. The probe includes a first waveguide enclosed within an inner sheath and extending from the proximal end to the distal end along an axis of the inner sheath; and a plurality of second waveguides having at least the distal ends thereof arranged in one or more rings around the inner sheath to surround the distal end of the first waveguide. At the distal end, the axis of each of the second waveguides is tilted with respect to the axis of the first waveguide by a tilt angle which can be adjustable. This novel endoscopic probe has a resultant numerical aperture larger than the numerical aperture of each of the second waveguides, and it may be applicable to forward-viewing spectrally encoded endoscopes (SEE).

An endoscope imager includes a system-in-package and a specularly reflective surface. The system-in-package includes (a) a camera module having an imaging lens with an optical axis and (b) an illumination unit. The system-in-package includes (a) a camera module having an imaging lens with an optical axis and (b) an illumination unit configured to emit illumination propagating in a direction away from the imaging lens, the direction having a component parallel to the optical axis. The specularly reflective surface faces the imaging lens and forming an oblique angle with the optical axis, to deflect the illumination toward a scene and deflect light from the scene toward the camera module.

A method includes receiving scan data of a tooth during a first mode of operation, the scan data of the tooth having been generated by an intraoral scanner. The method includes invoking a second mode of operation and presenting, in a GUI, an image of the tooth. The method includes presenting, in the GUI, indications of a plurality of color zones of the tooth, the indications comprising, for at least one color zone of the plurality of color zones, an indication that insufficient color information has been received, wherein each color zone represents a separate region of the tooth for which an approximately uniform color is to be used. The method includes categorizing, for one or more color zones of the plurality of color zones for which sufficient color information has been received, each of the one or more color zones according to a color pallet used for dental prosthetics.