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. 13, 2004
Filed:
Jan. 06, 2003
Applicant:
Inventors:
Assignee:
Coretronic Corporation, Hsin-Chu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 2/122 ; G03B 2/128 ; G03B 2/114 ; H04N 9/31 ; H04N 3/22 ;
U.S. Cl.
CPC ...
G03B 2/122 ; G03B 2/128 ; G03B 2/114 ; H04N 9/31 ; H04N 3/22 ;
Abstract
The present invention comprises a carrier, an optical engine disposed on the carrier, and a hood member coupled to the carrier at the front end of the optical engine. The hood member has an inlet coupled to the optical engine and an outlet sealed with a screen. At least one mirror is placed in an optical path between the optical engine and the screen for reflecting a beam from the optical engine, and is disposed with an adjusting bolt at its backside for adjusting. The hood member wraps the optical path from the optical engine to the screen for keeping the optical engine outside and preventing the external dust, moisture, and temperature.