Abstract: An image processing device processes an image of a subject eye. The image processing device includes an image acquisition unit that acquires an image of the subject eye, a diagnosis unit that obtains a diagnosis result of the subject eye based on the image acquired by the image acquisition unit, and a display control unit that changes a display mode of a display unit based on the diagnosis result.

Abstract: An OCT apparatus includes an OCT optical system that has a light splitter splitting light from an OCT light source to light travelling to a measurement light path and light travelling to a reference light path and a detector detecting a spectrum interference signal of measurement light guided to a subject eye through the measurement light path and reference light from the reference light path, and a processing unit that processes the spectrum interference signal to generate OCT data. The processing unit performs at least complementary processing on an overlapping region of a real image and a virtual image in OCT data based on a plurality of OCT data obtained with different optical path lengths when detecting the spectrum interference signal, and generates OCT data subjected to the complementary processing.

Abstract: An ocular fundus image processing device includes a processor. The processor acquires an ocular fundus image of a subject's eye photographed using an ocular fundus image photographing unit. The processor also acquires a detection result of an artery and a vein in at least a part of the ocular fundus image, by inputting at least the part of the ocular fundus image into a mathematical model trained using a machine learning algorithm.

Abstract: A three-phase brushless motor in one mode of the present invention is comprised of a rotation axis, a rotor yoke rotating around said rotation axis, a drive magnet formed into a ring shape and attached on said rotor yoke, said drive magnet having a plurality of magnetized poles at an equal magnetization pitch angle Pm, a plurality of drive coils disposed so that the center of each said drive coil is at angular intervals of a predetermined arrangement angle Pc, the angle Pc being 4/3 times said magnetization pitch angle Pm, a rotation detecting magnet attached on said rotor yoke, and a magnetic sensor attached opposing said rotation detecting magnet so as to detect a magnetic flux of said rotation detecting magnet, wherein said magnet sensor is disposed at a position in which a magnetic flux from said drive magnet and a magnetic flux from said drive coils are canceled with each other.

Abstract: A three-phase brushless motor in one mode of the present invention is comprised of a rotation axis, a rotor yoke rotating around said rotation axis, a drive magnet formed into a ring shape and attached on said rotor yoke, said drive magnet having a plurality of magnetized poles at an equal magnetization pitch angle Pm, a plurality of drive coils disposed so that the center of each said drive coil is at angular intervals of a predetermined arrangement angle Pc, the angle Pc being 4/3 times said magnetization pitch angle Pm, a rotation detecting magnet attached on said rotor yoke, and a magnetic sensor attached opposing said rotation detecting magnet so as to detect a magnetic flux of said rotation detecting magnet, wherein said magnet sensor is disposed at a position in which a magnetic flux from said drive magnet and a magnetic flux from said drive coils are canceled with each other.

Abstract: A speed detection apparatus has a rotor magnet (11, 12, 13) having a plurality of magnetic coil portions formed in the direction of its circumference, and a coil pattern for signal detection (6, 7) rotationally displaced relative to an opposing rotor magnet. The rotor magnet has a first magnetized portion (5) for detection of a rotation phase of the rotor and formed in the one portion at a specific position and a second magnetized portion (8) for detection of a rotation speed of the rotor and provided at a portion other than the first magnetized portion and a non-magnetized portion (14) having a crescent shape and provided at a specific position of the rotor symmetrical from a center of rotation of the rotor magnet, with respect to the first magnetized portion.