Abstract: A microscope system includes an eyepiece-side observation optical system that forms an image of a sample on an object side of an eyepiece, a camera-side observation optical system that forms an image of the sample on an image sensor, a diaphragm that limits a numerical aperture on the emission side of the camera-side observation optical system, and a processor that analyzes the image of the sample captured by the image sensor. In a case where a numerical aperture on an object side of an objective lens is denoted by NA, the numerical aperture on the emission side of the camera-side observation optical system determined by a light flux emitted from the camera-side observation optical system toward the image sensor at capturing the image is denoted by NA?, and a total magnification of the camera-side observation optical system is denoted by M1, the following is satisfied.

Abstract: An observation device includes: a macro observation system; and a micro observation system. The macro observation system and the micro observation system are arranged so as to satisfy a first condition. The first condition is that a distance from a macro optical axis to a micro optical axis is equal to or less than a square root of a sum of squares of a first distance and a second distance. The first distance is a distance between the macro optical axis and a central axis of an outer diameter of the nosepiece. The second distance is a distance in a first direction between the central axis of the outer diameter and a side surface of the nosepiece. The first direction is a direction orthogonal to the macro optical axis and orthogonal to a line segment connecting the macro optical axis and the central axis of the outer diameter.

Abstract: Provided is a multidirectional input apparatus.

Abstract: Provided is a multidirectional input apparatus.