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:
Mar. 23, 1999
Filed:
Sep. 18, 1997
Applicant:
Inventor:
Nobuyuki Nagasawa, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359383 ; 359368 ; 2502013 ;
Abstract
The preceding-profile of a specimen image upon inserting a preceding objective lens in the optical path to a specimen placed on a stage is detected. The succeeding-profile of the specimen image upon inserting a succeeding objective lens in the optical path is predicted on the basis of the preceding- and succeeding-optical parameters of the preceding and succeeding objective lenses inserted in the optical path, and the preceding-profile. The position of the stage with respect to the specimen is adjusted on the basis of the succeeding-profile obtained by this prediction.