| 摘要 |
A microscope comprising an objective lens; 1st, 2nd, 3rd and 4th magnification-varying optical systems of a same power, having optical axes parallel to the optical axis of the objective lens and positioned behind the objective lens and around the optical axis thereof; an objective unit in which the objective lens and the 1st, 2nd, 3rd and 4th magnification-varying optical systems are provided; a deflection optical system for directing specified two light beams, among the light beams transmitted by the 1st, 2nd, 3rd and 4th magnification-varying optical systems, to a first direction and also directing the remaining two light beams to a second direction; a first observation optical system for respectively forming images, for observation, by the two light beams directed to the first direction; a second observation optical system for respectively forming images, for observation, by the two light beams directed to the second direction; and first and second observation units detachably mountable alternatively to the objective unit; wherein the first observation unit is provided with the deflection optical system and the first observation optical system while the second observation unit is provided with the deflection optical system and the second observation optical system; the deflection optical system in the first observation unit is so constructed that the first and second directions form a predetermined first angle; and the deflection optical system in the second observation unit is so constructed that the first and second directions form a predetermined second angle different from the predetermined first angle. <IMAGE> |
