Display hologram
AssigneeHughes Aircraft Company
InventorsJohn E. Wreede, James E. Scott
Life of this patent
Estimating the term…
Abstract
A display hologram structure including a display hologram configured for reconstruction with a playback beam having a predetermined wavefront configuration, and a light configuring hologram that provides playback illumination for the display hologram pursuant to diffraction of an off-axis playback beam that does not have the predetermined wavefront configuration, and wherein the playback illumination provided by the light configuring hologram has the predetermined wavefront configuration.
Claims19
A display hologram structure comprising:
- a substrate having first and second opposing sides;
- a light configuring hologram which is a transmission hologram attached to the first side of said substrate;
- and
- a display hologram which is a reflection hologram laminarly attached to said light configuring hologram and responsive to playback illumination at an incidence angle that is within 25 degrees of normal;
- wherein said light configuring hologram is responsive to a first playback beam for providing playback illumination to said display hologram at an incidence angle that is within 25 degrees of normal relative to said display hologram.
A display hologram structure comprising:
- a substrate having first and second opposing sides;
- a light configuring hologram which is a transmission hologram attached to the first side of said substrate;
- and
- a display hologram which is a transmission hologram laminarly attached to said light configuring hologram and responsive to playback illumination at an incidence angle that is within 25 degrees of normal;
- wherein said light configuring hologram is responsive to a first playback beam which is a trapped beam in said substrate for providing playback illumination to said display hologram at an incidence angle that is within 25 degrees of normal relative to said display hologram.
A display hologram structure comprising:
- a substrate having first and second opposing sides;
- a light configuring hologram which is a reflection hologram attached to the first side of said substrate;
- a display hologram which is a reflection hologram laminarly attached to said light configuring hologram and responsive to playback illumination at an incidence angle that is within 25 degrees of normal;
- wherein said light configuring hologram is responsive to a first playback beam for providing playback illumination to said display hologram at an incidence angle that is within 25 degrees of normal relative to said display hologram.
A display hologram structure comprising:
- a substrate having first and second opposing sides;
- a light configuring hologram which is a reflection hologram attached to the first side of said substrate;
- and
- a display hologram which is a transmission hologram laminarly attached to said light configuring hologram and responsive to playback illumination at an incidence angle that is within 25 degrees of normal;
- wherein said light configuring hologram is responsive to a first playback beam for providing playback illumination to said display hologram at an incidence angle that is within 25 degrees of normal relative to said display hologram.
Dependencies are inferred from the claim text.