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.

Date of Patent:
Dec. 11, 2012

Filed:

Sep. 22, 2010
Applicants:

Joong-wan Park, Gyeonggi-do, KR;

Mun-kue Park, Gyeonggi-do, KR;

Inventors:

Joong-Wan Park, Gyeonggi-do, KR;

Mun-Kue Park, Gyeonggi-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

A focusing device for a beam projector which includes a casing; a lens holder having at least one lens which is movable forward or backward in the direction of the optical axis; a movable member located at a side of the lens holder to be movable parallel to the direction of the optical axis together with the lens holder; and a control knob located adjacent to the lens holder and rotatably coupled on the casing.


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