The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1997
Filed:
Dec. 05, 1994
Ken Tomioka, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A microscope includes an objective lens and 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 houses the objective lens and the 1st, 2nd, 3rd and 4th magnification-varying optical systems. A deflection optical system directs two specified light beams, among the light beams transmitted by the 1st, 2nd, 3rd and 4th magnification-varying optical systems, to a first direction and also directs the remaining two light beams to a second direction. A first observation optical system respectively forms images, for observation, by the two light beams directed to the first direction. A second observation optical system respectively forms images, for observation, by the two light beams directed to the second direction. First and second observation units are detachably mountable alternatively to the objective unit. 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.