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:
Sep. 09, 2014
Filed:
Dec. 21, 2012
Carl Zeiss Vision International Gmbh, Aalen, DE;
Jesus-Miguel Cabeza Guillen, Aalen, DE;
Michael Gamperling, Leipheim, DE;
Matthias Kubitza, Aalen, DE;
Carl Zeiss Vision International GmbH, Aalen, DE;
Abstract
An eyesight testing apparatus examines associated heterophoria of the eyes of a subject. The apparatus includes an image generation device having a display unit for generating test patterns for display to the eyes. An optical assembly is arranged on that side of the display unit facing the eyes. This assembly separates light supplied by a first group of selected zones of the display unit from light supplied to a beam path by a second group of selected zones of the display unit. The left eye only receives the light from the first group. The light from the second group only passes to the right eye. The optical assembly includes a prism matrix having a multiplicity of prism portions extending in the vertical direction and each having a lens-shaped region with a convex surface facing the display unit.