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. 15, 2003
Filed:
Feb. 28, 2001
Applicant:
Inventors:
Yasutada Miura, Hachioji, JP;
Shunsuke Kurata, Kamiina-gun, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01B 1/114 ;
U.S. Cl.
CPC ...
G01B 1/114 ;
Abstract
In an optical device having an objective lens for magnifying an image of a target object and a focusing unit including a laser source for irradiating the target object through the objective lens and a focus detecting light-receiving section for receiving light reflected from the target object, positions in the periphery of the target object are detected by using the laser beam emitted from the laser source of the focusing unit while changing a relative positional relationship between the target object and the objective lens.