Patent ID: 7982688
Filing Date: 2011-07-19
Classification: G02B

Abstract:
1. A device for displaying optical information, comprising: an image generating apparatus emitting optical information in the form of light beams; a surface, wherein the light beams arrive at the surface such that a virtual image of the optical information is perceivable in front of, behind, or in the surface; a first diffractive optical element arranged in a beam path of the light beams between the image generating apparatus and the surface, said first diffractive optical element influencing the beam path of the light beams; a second diffractive optical element arranged on a plane parallel to a plane of the first diffractive optical element and downstream of the first diffractive optical element along the beam path; and an adjustment apparatus operatively connected to at least one of the first and second diffractive optical elements for adjusting a position of the at least one of the first and second diffractive optical elements to minimize distortion of the virtual image, wherein the first and second diffractive optical elements are movable parallel to one another.