System for recording and playing back color encoded holograms

Claim 1

A system for producing color encoded Fraunhofer hologram records, comprising: means for encoding information representative of the color of a scene onto a first record such that said color information is contained as monochromatic intensity variations; and hologram producing means including a single source of spatially coherent monochromatic light directed for forming an object and a reference beam, said object beam being directed to said first record and from said first record for making a second record comprising a color encoded phase hologram of the Fraunhofer type containing said encoded color information in a single hologram contained on said hologram record.

Claim 2

A system for producing color encoded Fraunhofer hologram records, comprising: means for encoding information representative of the color of a scene onto a first record such that said color information is contained as monochromatic intensity variations; and hologram producing means including a single source of spatially coherent monochromatic light directed for forming an object and a reference beam, said object beam being directed to said first record and from said first record for making a second record comprising a color encoded phase hologram of the Fraunhofer type containing said encoded color information in a single hologram contained on said hologram record.

Claim 4

A system for producing color encoded hologram records, comprising: means including a striped spatial color encoding filter for encoding colored light from a color transparency onto a black and white film for forming an encoded monochromatic image thereon; means providing a source of coherent light; a light responsive recording medium; means for directing light from said coherent light source through said color encoded black and white film to said recording medium; lens means disposed between said black and white film and said photosensitive medium at a distance substantially equal to its focal length from said film; and means for directing light from said coherent light source through another path for forming a Fraunhofer hologram of said color encoded black and white film image on said recording medium.

Claim 5

A system for producing color encoded hologram records, comprising: means including a striped spatial color encoding filter for encoding colored light from a color transparency onto a black and white film for forming an encoded monochromatic image thereon; means providing a source of coherent light; a light responsive recording medium; means for directing light from said coherent light source through said color encoded black and white film to said recording medium; lens means disposed between said black and white film and said photosensitive medium at a distance substantially equal to its focal length from said film; and means for directing light from said coherent light source through another path for forming a Fraunhofer hologram of said color encoded black and white film image on said recording medium.

Claim 6

A system for producing color encoded hologram records, comprising: a source of color and brightness signals representative of the color and brightness of a scene wherein said brightness signal is contained within a first range of frequencies and said color signals are contained within a second range of frequencies; black and white film recording means responsive to said source of color and brightness signals for producing a black and white color encoded film recording; means providing a source of coherent light; a light responsive recording medium; means for directing light from said coherent light source through Said color encoded black and white film to said recording medium; lens means disposed between said black and white film and said light responsive recording medium at a distance substantially equal to its focal length from said film; and means for directing light from said coherent light source through another path for forming a Fraunhofer phase hologram of said color encoded black and white film image on said recording medium.

Claim 7

A system for producing color encoded hologram records, comprising: a source of color and brightness signals representative of the color and brightness of a scene wherein said brightness signal is contained within a first range of frequencies and said color signals are contained within a second range of frequencies; black and white film recording means responsive to said source of color and brightness signals for producing a black and white color encoded film recording; means providing a source of coherent light; a light responsive recording medium; means for directing light from said coherent light source through Said color encoded black and white film to said recording medium; lens means disposed between said black and white film and said light responsive recording medium at a distance substantially equal to its focal length from said film; and means for directing light from said coherent light source through another path for forming a Fraunhofer phase hologram of said color encoded black and white film image on said recording medium.

Claim 8

A system for producing color encoded hologram records, comprising: a source of spatially coherent monochromatic light; a recording medium responsive to said spatially coherent monochromatic light; means for directing said spatially coherent monochromatic light along a first path including at least one color separation negative disposed adjacent a grating means to said recording medium whereby said light is modulated by the information contained in said color separation negative and encoded by said grating means said means for directing light along a first path including lens means disposed between said at least one color separation negative and said recording medium at a distance substantially equal to its focal length from said at least one color separation negative; and means for directing said spatially coherent monochromatic light through a second path to create an interference pattern with said modulated light from said first path, said interference pattern forming a color encoded Fraunhofer hologram which is recorded in said recording medium.

Claim 9

A system for producing color encoded hologram records, comprising: a source of spatially coherent monochromatic light; a recording medium responsive to said spatially coherent monochromatic light; means for directing said spatially coherent monochromatic light along a first path including at least one color separation negative disposed adjacent a grating means to said recording medium whereby said light is modulated by the information contained in said color separation negative and encoded by said grating means said means for directing light along a first path including lens means disposed between said at least one color separation negative and said recording medium at a distance substantially equal to its focal length from said at least one color separation negative; and means for directing said spatially coherent monochromatic light through a second path to create an interference pattern with said modulated light from said first path, said interference pattern forming a color encoded Fraunhofer hologram which is recorded in said recording medium.

Claim 12

A method of making a color encoded Fraunhofer hologram record, comprising: spatially encoding information representative of the color of a scene; directing said encoded information as modulation of a first beam of spatially coherent monochromatic light along a first path to a recording medium responsive to said light; directing a beam of said unmodulated spatially coherent monochromatic light along a second path for forming an interference pattern with said modulated beam of spatially coherent monochromatic light whereby said interference pattern is recorded on said recording medium as a Fraunhofer hologram containing said encoded color information.

Claim 13

A method of making a color encoded Fraunhofer hologram record, comprising: spatially encoding information representative of the color of a scene; directing said encoded information as modulation of a first beam of spatially coherent monochromatic light along a first path to a recording medium responsive to said light; directing a beam of said unmodulated spatially coherent monochromatic light along a second path for forming an interference pattern with said modulated beam of spatially coherent monochromatic light whereby said interference pattern is recorded on said recording medium as a Fraunhofer hologram containing said encoded color information.

Claim 14

A method of making a color encoded Fraunhofer hologram recording, comprising: combining a brightness representative signal contained within a first frequency range with color representative signals contained within a second frequency range for forming a composite signal continuously representative of both the color and brightness of a scene; coupling said composite signal to means for recording said composite signal on black and white motion picture film for forming color encoded images of said scene; making a Fraunhofer hologram of said color encoded film images by directing a first light component from a spatially coherent monochromatic light source through said color encoded film through a lens disposed a distance substantially equal to its focal length from said film to impinge on a recording medium at a first predetermined angle and directing a second light component to impinge on said recording medium at a second predetermined angle for producing an interference pattern between said first and second light components for producing a Fraunhofer hologram relief pattern on said recording medium representative of the color and brightness of said scene.

Claim 15

A method of making a color encoded Fraunhofer hologram recording, comprising: combining a brightness representative signal contained within a first frequency range with color representative signals contained within a second frequency range for forming a composite signal continuously representative of both the color and brightness of a scene; coupling said composite signal to means for recording said composite signal on black and white motion picture film for forming color encoded images of said scene; making a Fraunhofer hologram of said color encoded film images by directing a first light component from a spatially coherent monochromatic light source through said color encoded film through a lens disposed a distance substantially equal to its focal length from said film to impinge on a recording medium at a first predetermined angle and directing a second light component to impinge on said recording medium at a second predetermined angle for producing an interference pattern between said first and second light components for producing a Fraunhofer hologram relief pattern on said recording medium representative of the color and brightness of said scene.

Claim 16

A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material in a manner that each component is separably retrievable therefrom, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.

Claim 17

A method of constructing a color visual information containing hologram, comprising the steps of: separating the color visual information into a plurality of components including luminance and color component signals, recording said luminance and color component signals onto a black-and-white photosensitive material in a manner that each component is separably retrievable therefrom, thereby to form a color coded transparency, and constructing a hologram of said coded transparency with monochromatic coherent light.

Claim 18

A method of constructing a hologram containing one frame of color visual information, comprising the steps of: separating said color visual information into its narrow bandwidth color components, recording said components on a common area of a black-and-white photosensitive material in a manner that a replica of said color visual information may be reconstructed therefrom, thereby to form a color coded transparency, and constructing a single hologram of said color coded transparency with coherent light.

Claim 19

A method of constructing a hologram containing one frame of color visual information, comprising the steps of: separating said color visual information into its narrow bandwidth color components, recording said components on a common area of a black-and-white photosensitive material in a manner that a replica of said color visual information may be reconstructed therefrom, thereby to form a color coded transparency, and constructing a single hologram of said color coded transparency with coherent light.