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:
Nov. 17, 2009
Filed:
Jul. 06, 2006
Applicants:
Kenya Okazaki, Hachioji, JP;
Mitsuo Harada, Hachioji, JP;
Inventors:
Kenya Okazaki, Hachioji, JP;
Mitsuo Harada, Hachioji, JP;
Assignee:
Olympus Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 21/02 (2006.01); G02B 21/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
An immersion objective lens includes a front lens, a lens frame which supports the front lens, and a liquid preventive frame which is attached around the lens frame. The liquid preventive frame includes a liquid bulb holding wall which holds a liquid supplied onto the front lens. A distal end of the liquid bulb holding wall is located more inner in the front lens in a direction parallel to a center axis of the front lens than a distal end face of the front lens.