Abstract A transparency for reproducing preselected area delineations in colors and intensities thereof variable at will is formed by using an interference pattern formed holographically by the interference of a split laser beam. The transparency has a plurality of mutually exclusive areas each individual area representing a variable color wherein the area or areas representing a particular variable color contains spatial frequency carriers which are oriented differently from the spatial frequency carriers of the other areas. The holographic process of preparing the transparency by separately exposing each area in a different orientation to the interference of the two said laser beams is also disclosed. The process and apparatus for utilizing the separation transparency to form predetermined images wherein the color of the individual areas and the intensity thereof forming such image may be varied at will is also disclosed.
An optical viewer having a plurality of light sources which are indipendently variable as to color and intensity, mounted in said optical viewer, a film-like transparency from about 50 to about 200 microns in thickness having a plurality of mutually exclusive areas, each individual area containing differently oriented spatial frequency carriers formed of a photopolymerized organic resin, said spatial frequency carriers having a spacing of from 200 to 2,000 lines per millimeter, and each of said light sources being positioned so as to cooperate with an individual area of said transparency whereby light from said light source is diffracted onto a display.
Claim 2
Dependent Claim
102 words
An optical viewer having a plurality of light sources which are indipendently variable as to color and intensity, mounted in said optical viewer, a film-like transparency from about 50 to about 200 microns in thickness having a plurality of mutually exclusive areas, each individual area containing differently oriented spatial frequency carriers formed of a photopolymerized organic resin, said spatial frequency carriers having a spacing of from 200 to 2,000 lines per millimeter, and each of said light sources being positioned so as to cooperate with an individual area of said transparency whereby light from said light source is diffracted onto a display.
Claim 3
Dependent Claim
21 words
The transparency of claim 1 wherein the spatial frequency carriers have a spacing of from 500 to 750 lines per millimeter.