Close-lit holographic nightlight display lighting system

Details Close-lit holographic nightlight display lighting system Close-lit holographic nightlight display lighting system

1997-03-05

2000-06-06

Spyrou, Cassandra

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 13, 359 22, 359 32, G02B 2722

Patent

active

060726067

ABSTRACT:
A holographic display system provides a holographic image suitable for use as a nightlight in a dimly lit environment wherein the only light in the field of view of the user is essentially the light diffracted into the holographic image being replayed. The holographic display system includes a low watt light source, a hologram recorded with a reference beam matching the beam of the light source employed to replay the hologram, and an enclosing structure for holding the lightsource and hologram in registration wherein the enclosure is configured so that the only light emitted from the display system is emitted from the hologram.

REFERENCES:
patent: 4830445 (1989-05-01), Robinson
patent: 4940301 (1990-07-01), Sallai
patent: 5121229 (1992-06-01), Benton et al.
patent: 5355600 (1994-10-01), Thompson
patent: 5418631 (1995-05-01), Tedesco
patent: 5682255 (1997-10-01), Friesem et al.
patent: 5822088 (1998-10-01), Danno et al.

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