Patent ID: 8243365

Claim:
A microscope comprising: a main body that has a substantially C-shape in side view, and that comprises a lower horizontal portion, an upper horizontal portion, and a brace portion, the brace portion connecting between the lower horizontal portion and the upper horizontal portion at respective rear sides thereof; a transmitted light source; a collector lens that transforms the illumination light from the transmitted light source into substantially parallel light; and a transmitted-light illumination optical system that brings illumination light from the transmitted light source to a specimen supported by the main body, and illuminates the specimen with the illumination light transmitted therethrough, wherein the lower horizontal portion and the brace portion are integrated to form an L-shape frame, wherein the transmitted-light illumination optical system and the transmitted light source are removably attachable to the frame of the main body, wherein the transmitted-light illumination optical system includes: a field stop that restricts the illumination light transmitted through the collector lens; a mirror that deflects an optical path of the illumination light passing through the field stop; and a window lens that projects a field stop image from the mirror on substantially infinity, wherein at least the transmitted light source and the collector lens are removably attachable to a rear side of the frame in an integrated manner, and wherein at least the field stop, the mirror, and the window lens are removably attachable to a front side of the frame in an integrated manner.