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:
Nov. 12, 2013
Filed:
Feb. 24, 2006
Sebastien Amroun, The Hague, NL;
Armin Schwerdtner, Dresden, DE;
Sebastien Amroun, The Hague, NL;
Armin Schwerdtner, Dresden, DE;
Seereal Technologies GmbH, Dresden, DE;
Abstract
The invention relates to a method and device for tracking the sweet spots of a sweets spot unit for a transmissive electronic display. The aim of the invention is to improve the reproduction quality and the uniformity of illumination in displays of this type. The display contains a sweet spot unit consisting of an illumination matrix () and reproduction elements, in addition to an image matrix (). Once the position of at least one observer's eye () has been determined by a control unit using inverse ray tracing, address data for activating illumination elements (LE) of the illumination matrix () is provided from the position data in order to prepare the defined sweet spots () for said observer's eye (). To improve the reproduction quality, an additional optical component is used in ray path for the inverse ray tracing process. In addition to the viewing angle (α) of the observer, the control unit detects and takes into consideration a defined angle (θ) of a scattering or diffractive element in a predetermined angular range. The permits additional address data to be activated for the illumination elements (LE) and the defined sweet spot () can be illuminated in a uniform manner.