Patent ID: 8928974
Filing Date: 2015-01-06
Classification: G02B

Abstract:
1. An inverted microscope comprising: an objective optical system that collects light from a specimen; an image-forming optical system that images the light from the specimen that has been collected by the objective optical system to form an intermediate image; a relay optical system that relays the intermediate image formed by the image-forming optical system; an light-splitting unit that splits the light from the relay optical system; and a pair of ocular optical systems that image, in a magnified manner, the intermediate images that have been split by the light-splitting unit on eyes of an observer as virtual images; wherein the following conditional expressions are satisfied: wherein K is a coefficient; Fntl is a focal length of the image-forming optical system; Ftl is a focal length of a reference image-forming optical system having a magnification of 1×; βRL is a magnification of the relay optical system; Fne is a focal length of the ocular optical system; and Fe is a focal length of the ocular optical system in an inverted microscope including the reference image-forming optical system and a reference objective optical system.