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. 13, 2007
Filed:
Feb. 17, 2004
Frank Holler, Aalen, DE;
Frank Holler, Aalen, DE;
Carl-Zeiss-Stiftung Trading AS, Heidenheim, DE;
Abstract
A display device is provided for generating an image which is perceivable, by a viewer (M) of an object located in an object plane (O), as being superimposed on the object, said device comprising an image generating device () for generating the image in an image plane (B) and a superimposing unit (), wherein the image generating device () and the superimposing unit () are mounted on a support device (), which is placeable on the head of the viewer (M), and the image generating device () comprises a focusing unit () by which the distance from the image plane (B) to the support device () is changeable and which includes a lens () having a variable refractive index as well as a control unit () for adjusting the refractive index of the lens (), wherein, when the support device () is placed on the head of the viewer (M), the superimposing unit () effects superposition of the generated image on the object for the viewer (M) and the control unit () adjusts the refractive index of the lens () such that the object plane (O) coincides with the image plane (B).