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. 26, 2008
Filed:
Oct. 24, 2002
Applicant:
Wilfried Plass, Bremen, DE;
Inventor:
Wilfried Plass, Bremen, DE;
Assignee:
Rheinmetall Defence Electronics GmbH, Bremen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/56 (2006.01); G03B 21/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a projector screen for image projection, comprising a transparent support () which fixes the screen shape and a light-scattering layer, which covers at least one defined projection surface within the screen shape, whereby, in order to reduce the corona effect which degrades the image contrast and the image resolution, the light-scattering layer is embodied as a coating () on a very thin transparent film (). Said film () is fixed to the separate support () and optically decoupled from the support (), preferably by means of an air gap ().