Hologram writing apparatus and method

Details Hologram writing apparatus and method Hologram writing apparatus and method

1984-10-23

1987-04-07

Arnold, Bruce Y.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

350 366, 358 90, G03H 110

Patent

active

046555390

ABSTRACT:
An improved hologram writer writes a halogram from a three dimensional data stream or signal such as a signal corresponding to a scene, a picture, drawing or the like. A reference beam and an object or information beam are directed to a holographic recording member, and the information beam is focused through a point near the holographic recording member. A diverger means such as a diffuser, a lens array, a holographic element or the like adapted to form an expanding beam from a point image or spot receives a focused modulated information beam and directs it to the holographic recording member as a divergent beam. The beam may be sent directly to the recording member or it may be optically or otherwise relayed to the member. The point source may be in front of, behind or within the holographic recording member.

REFERENCES:
patent: 4498740 (1985-02-01), Caulfield

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