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:
Dec. 22, 2009
Filed:
Apr. 02, 2009
Applicant:
Shang-yung Liang, Taichung, TW;
Inventor:
Shang-Yung Liang, Taichung, TW;
Assignee:
Asia Optical Co., Inc., Taichung, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G02B 15/14 (2006.01); G02B 23/00 (2006.01); G03B 17/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ocular focus device. An ocular lens tube is movably disposed in an ocular housing and includes a positioning groove. An ocular lens set is disposed in the ocular lens tube. A positioning member is connected to the ocular housing and is disposed in the positioning groove. When the ocular lens tube moves with respect to the ocular housing, the ocular lens set performs a focus operation, and the positioning member moves in the positioning groove, limiting a moving range of the ocular lens tube with respect to the ocular housing.