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:
Feb. 08, 1983
Filed:
May. 15, 1981
Applicant:
Inventors:
Alvin M Marks, Whitestone, NY (US);
Mortimer Marks, Whitestone, NY (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
352 57 ; 352198 ; 362 19 ;
Abstract
This invention provides a high efficiency polarized light source and system for the projection of 3D motion pictures adaptable to a standard motion picture projector device. The projected light beam is compressed into a shape more nearly approximating the aperture shape so that substantially less than 40% of the light is lost at the gate.