Abstract: An optical probe 40 used for the vascular optical tomographic imaging apparatus 100 includes an optical fiber 10 having a central axis 14 and a translucent lens member 20 fixed to a tip surface 12 of the optical fiber. The lens member has an outer circumferential surface surrounding an extension axis 22 obtained by extending the central axis 14 of the optical fiber forward, a rear end surface 26 intersecting the extension axis, and a tip surface 28 intersecting the extension axis. The tip surface of the lens member is a surface extending obliquely with respect to the extension axis. The outer circumferential surface of the lens member has, at least in part, a cylindrical surface portion 24 around the extension axis or a cylindrical surface portion about an axis parallel to the extension axis.

Abstract: A relay optical system 20 for a rigid endoscope includes 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.

Abstract: A hyperparameter configuration device includes at least one memory, and at least one processor configured to acquire a program execution instruction including parameter description data, the program execution instruction being written through a command-line interface, set a value of a hyperparameter of a program to be trialed, based on the parameter description data, acquire a result of a trial of the program, the trial of the program being executed with the value of the hyperparameter, and set a next value of the hyperparameter of the program, based on the result of the trial.

Abstract: 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.