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. 27, 2012
Filed:
Nov. 09, 2007
Hideyuki Kawanabe, Tokyo, JP;
Hideyuki Kawanabe, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
An autofocus device, comprises: a stage for mounting a sample; an objective lens; a focusing unit driving stage or the objective lens in an optical axis direction in order to control the position relative to each other of the stage and the objective lens; a lighting unit onto the sample; a detection unit detecting an optical image; a projection state changing unit being provided in an optical path, changing a state of the optical image projected onto the detection unit; a first in-focus state determination unit determining an in-focus state of the sample on the basis of a detection result; and a first in-focus state adjustment unit controlling a position of the projection state changing unit such that a state in which the stage and the objective lens are held at prescribed positions under control of the driving unit is determined to be an in-focus state.