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:
Aug. 24, 2010
Filed:
Jan. 10, 2007
Applicants:
Sheng-chang LU, Penghu County, TW;
Tzu-huan Hsu, Taipei County, TW;
Chun-ming Shen, Taipei, TW;
Inventors:
Assignee:
Qisda Corporation, Taoyuan County, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/16 (2006.01); G03B 21/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
An air guiding structure is applied in a projecting device. The projecting device at least includes an optical element. The air guiding structure includes a first side wall and a second side wall. The first side wall having a first opening is disposed near a side of the optical element. The second side wall having a second opening is disposed near the other side of the optical element. Furthermore, the first side wall and the second side wall are connected to each other. The air is guided into the first opening, circulated through the optical element and is vented out via the second opening.