Abstract: 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.

Abstract: A medical control apparatus includes a circuitry configured to: generate an irradiation image represented by illuminating-light irradiation, based on a brightness distribution of a captured image captured by an imaging device; and control generation of a projection image and projection of the projection image onto a subject by an image projector provided in an optical member based on the irradiation image and a rotation angle for rotation of the optical member rotatably coupled to the imaging device about a longitudinal axis of the optical member relative to the imaging device.

Abstract: An endoscope system includes: an electric lens capable of changing a focal length by applying a voltage; an imaging unit configured to capture a subject image formed by the electric lens to generate image signals; a focus controller configured to perform control to periodically repeat sequential switching of the focal length of the electric lens between two or more values; and a video signal generator configured to generate a video signal to be provided to a display device from the image signals generated by the imaging unit.

Abstract: A medical observation apparatus includes: a grip configured to be connected to an insertion portion inserted into a subject, the grip being gripped by a user; a transmission cable extending from the grip; a connector provided at an end portion of the transmission cable and configured to be detachably connected to a controller outside the medical observation apparatus; a heat generator provided inside the insertion portion or the grip, and configured to generate heat when driven; a signal transmission path included in the transmission cable, and configured to perform signal transmission between the controller and the grip; and a cooling channel configured to distribute a cooling fluid thermally connected to the heat generating portion, the cooling channel being an annular channel configured to circulate the cooling fluid within the medical observation apparatus.

Abstract: An endoscope system includes: an electric lens capable of changing a focal length by applying a voltage; an imaging unit configured to capture a subject image formed by the electric lens to generate image signals; a focus controller configured to perform control to periodically repeat sequential switching of the focal length of the electric lens between two or more values; and a video signal generator configured to generate a video signal to be provided to a display device from the image signals generated by the imaging unit.

Abstract: An imaging unit provided at a tip portion of an endoscope includes: an imaging element configured to receive light and perform photoelectric conversion on the light to generate an electrical signal; an oscillator configured to generate a clock signal for driving the imaging element; a photoelectric element configured to convert the electrical signal generated by the imaging element into an optical signal and to output the optical signal to outside; a regulator configured to convert electric power input from the outside into electric power depending on each of the imaging element, the oscillator, and the photoelectric element, and to supply the converted electric power thereto. The imaging element is spaced farther than the oscillator and the photoelectric element from the regulator.

Abstract: An endoscope system includes: an image sensor, a first photoelectric sensor configured to convert an imaging signal and test data output from the image sensor into an optical signal and output the optical signal, optical fibers configured to transmit the optical signal output from the first photoelectric sensor, and an information processing device. The information processing device includes a second photoelectric sensor configured to receive the optical signal transmitted through the optical fibers, and is configured to: measure a current value corresponding to a receiving sensitivity of the test data converted into an electric signal by the second photoelectric sensor; measure a bit error rate of the test data; determine a transmission level of the test data based on the current value and the bit error rate; and assume reasons for a decrease in the transmission level and cause the transmission level to recover based on the transmission level.

Abstract: An imaging unit provided at a tip portion of an endoscope includes: an imaging element configured to receive light and perform photoelectric conversion on the light to generate an electrical signal; an oscillator configured to generate a clock signal for driving the imaging element; a photoelectric element configured to convert the electrical signal generated by the imaging element into an optical signal and to output the optical signal to outside; a regulator configured to convert electric power input from the outside into electric power depending on each of the imaging element, the oscillator, and the photoelectric element, and to supply the converted electric power thereto. The imaging element is spaced farther than the oscillator and the photoelectric element from the regulator.