Heads-up and heads-down displays employing holographic stereograms

Abstract

Abstract 055745798 Heads-up and heads-down displays employing holographic stereograms are provided. The stereograms can be oriented perpendicular to the user's line of sight (the "90° case") or at angle to the line of sight (the "non-90° case"). The stereograms are produced using a three-step process in which a series of two-dimensional perspective views are prepared, a H 1 hologram is prepared from the two-dimensional perspective views, and a H 2 hologram is prepared from the H 1 hologram. For the non-90° case, the two-dimensional perspective views are oriented at an angle relative to the plane of the H 1 hologram during the preparation of that hologram. Similarly, during the preparation of the H 2 hologram for this case, the H 2 hologram is oriented at an angle relative to the H 1 hologram. In this way, the viewing slits generated by the holographic stereogram are located in the vicinity of the user's eyes for the non-90° case as is desired. In certain embodiments, the two-dimensional perspective views are transformed prior to being recorded on the H 1 hologram.

Inventors

• 👤 William J. Molteni
• 👤 William J. Volchok

Bibliographic Details