US 6,982,817 B1
Method, device and laser system for producing screen holograms, and screen hologram
Thorsteinn Halldorsson, Munich (Germany)
Assigned to EADS Deutschland GmbH, Munich (Germany)
Appl. No. 10/31,438
PCT Filed Jul. 06, 2000, PCT No. PCT/DE00/02220
§ 371(c)(1), (2), (4) Date May 23, 2002,
PCT Pub. No. WO01/07942, PCT Pub. Date Feb. 01, 2001.
Claims priority of application No. 199 34 162 (DE), filed on Jul. 21, 1999.
Int. Cl. G03H 1/26 (2006.01)
U.S. Cl. 359—22 17 Claims
OG exemplary drawing
 
1. A method of producing a video screen hologram for forming a projected video image thereon, said video screen hologram being formed as a holographic image of a real video screen by illuminating the real video screen with narrowband light to generate a hologram of the real video screen, said method comprising:
making a plurality of individual recordings by sequentially illuminating a plurality of different partial areas of the real video screen; and
forming a video screen hologram of the entire video screen by a composition of the individual recordings; wherein
illumination of the video screen is performed by guiding a scanning pulsed laser beam over the video screen; and
the video screen hologram is one of a contact hologram and an image plane hologram, whereby during reconstruction of said holographic image of a real video screen, said projected video image appears in a hologram plane of said video screen hologram.