Holographic image recording using liquid crystal

• US 4,964,684 A
• Filed: 12/28/1988
• Issued: 10/23/1990
• Est. Priority Date: 12/28/1988
• Status: Expired due to Fees

• Current Assignee: Iovine, John
• Original Assignee: Iovine, John
• Inventors: Iovine, John
• Primary Examiner(s): Arnold, Bruce Y.
• Assistant Examiner(s): Callaghan, Terry S.
• Application Number:
  US07/291,113
• Time in Patent Office: 664 Days
• Field of Search: 350/3.76, 350/3.78, 350/3.6
• US Class Current: 359/23
• CPC Class Codes: G03H 1/268 Holographic stereogram

Abstract

This invention pertains to holography and particularly to a novel method for producing holographic stereogram images from a sequential series of two dimensional images generated on a liquid crystal display matrix. Further a liquid crystal display matrix is used to generate a vertical slit aperture for the masking of a halographic plate.

Claims

1. A method of constructing a multiplex hologram of two dimensional images displayed on an LCD display, comprising:

generating a series of two-dimensional images;

displaying successive ones of said images on an LCD display matrix;

providing a holographic plate to be exposed;

directing an object beam of coherent radiation at the LCD display matrix so that the transmitted coherent radiation is incident on the holographic plate;

directing a reference beam of coherent radiation at the holographic plate to produce, in combination with the transmitted object beam, a holographic interference pattern on the plate; and

selectively exposing portions of the plate, through slit apertures in a second LCD display matrix, said portions corresponding to successive ones of the images to form a multiplex hologram on the plate.