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:
Dec. 23, 1980
Filed:
Oct. 25, 1978
Applicant:
Inventor:
Ken Yonekubo, Hachiouji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
250205 ; 350 87 ;
Abstract
An automatic switching means for microscope illumination system comprising objective lenses having screws which are used for attaching said objective lenses to a revolver and have different lengths depending on magnification levels of the objective lenses and detecting means for detecting the differences of said screws, and being so adapted as to switch an illumination system for a different illuminating condition on the basis of detected length of the screw. Said automatic switching means is so adapted as to assure favorable illuminating condition regardless of setting positions of said objective lenses in the revolver.