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:
Apr. 26, 2005
Filed:
Feb. 13, 2002
Applicant:
Roger Spink, Berneck, CH;
Inventor:
Roger Spink, Berneck, CH;
Assignee:
Leica Microsystems AG, Heerbrugg, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B027/40 ; G02B027/64 ; G02B007/04 ;
U.S. Cl.
CPC ...
Abstract
The invention concerns a method and an apparatus for automatically focusing an optical device onto a specific and predetermined region of a specimen. The apparatus compares signals corresponding to the vertical distance between a principal objective and a region of a specimen which is in focus to the vertical distance between the principal objective and a target region on the specimen. If the comparison of the distances indicates that they are not the same, the system automatically alters the distance between the specimen and the principal objective so that the target region is properly focused.