Patent ID: 7821705
Filing Date: 2010-10-26
Classification: G02B

Abstract:
1. A microscope comprising: an objective lens; an afocal variable-magnification optical system, disposed at an exit side of the objective lens, for variably magnifying the size of an image of the objective lens; an image-forming optical system, disposed at an exit side of the afocal variable-magnification optical system, for imaging the image of the objective lens; a splitting member, disposed at an exit side of an image-forming lens, for selectively splitting into an observation optical path or an image-acquisition optical path; and an observation optical system, disposed in the observation optical path, for visually observing an image split-off from the image-acquisition optical path; wherein the observation optical path comprises: wherein the microscope satisfies the following conditional expression: where symbol D represents an exit beam diameter of the afocal variable-magnification optical system.