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. 19, 1986
Filed:
Sep. 06, 1984
Applicant:
Inventor:
Maarjus Kurg, Cambridge, CA;
Assignee:
Electrohome Limited, Kitchener, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 60 ; 358 64 ;
Abstract
A top-to-bottom focussing arrangement which maintains convergence is provided for a video projector employing separate red, green and blue cathode ray tubes (CRT's) and a dichroic mirror assembly. Each CRT has a mounting bracket, and the mounting bracket is pivotably mounted with respect to the dichroic mirror assembly to permit changes in the inclination of the longitudinal axis of the CRT to be effected. Simultaneous and equal changes in the inclinations of the longitudinal axes of the CRT's are effected by means of a rotatable member having rigid connecting arms pivotably connected thereto and pivotably connected to the mounting brackets.