Abstract: Object: To reduce the size of a device. Solution to Problem: A switching module according to one aspect of the present disclosure is a module used in a power conversion circuit. The switching module includes a case member formed to extend in a first direction and a second direction, one or more switching elements disposed to face the case member in a stacking direction orthogonal to the first direction and the second direction, and a pressing member configured to press at least part of the one or more switching elements toward one side in the stacking direction via the case member. The one or more switching elements are disposed closer one end portion of both end portions of the case member in the second direction.

Abstract: A microscope includes: an illumination optical system which irradiates a specimen with excitation light; a detector which detects fluorescence emitted from the specimen; and an observation optical system which guides fluorescence to the detector and includes: a first optical filter having wavelength reflection and transmission characteristics that vary depending on where light enters; a second optical filter disposed in an optical path of light reflected by the first optical filter, having a boundary wavelength of transmission changing with respect to a position along a first direction, and transmitting light having a wavelength longer than a first boundary wavelength at where the reflected light enters; and a third optical filter disposed in the optical path and having a boundary wavelength of transmission changing with respect to a position along the first direction, and transmitting light having a wavelength shorter than a second boundary wavelength at where the reflected light enters.