US3856986A — Scanned holography systems using temporal modulat…

Claim 1

Independent Claim 126 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. Means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam; B. means for forming an image-information beam which includes 1. means for forming a light reference beam having substantially the same frequency spectrum as said object beam, 2. means for cyclically temporally offsetting the phase relationship between said reference and object beams, in a continuous manner over the period of a cycle, 3. means for combining said light reference beam and said object beam thereby to provide a light interference pattern containing information relative to conjugate images of the said object.

Claim 2

Dependent Claim 126 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. Means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam; B. means for forming an image-information beam which includes 1. means for forming a light reference beam having substantially the same frequency spectrum as said object beam, 2. means for cyclically temporally offsetting the phase relationship between said reference and object beams, in a continuous manner over the period of a cycle, 3. means for combining said light reference beam and said object beam thereby to provide a light interference pattern containing information relative to conjugate images of the said object.

Claim 3

Dependent Claim 24 words

means for cyclically temporally offsetting the phase relationship between said reference and object beams, in a continuous manner over the period of a cycle,

Claim 4

Dependent Claim 24 words

means for cyclically temporally offsetting the phase relationship between said reference and object beams, in a continuous manner over the period of a cycle,

Claim 5

Dependent Claim 69 words

In a system for producing a hologram recording from which a Three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 1 wherein said means for cyclically temporally offsetting the relationship between said reference and object beams in a continuous manner over the period of a cycle constitutes a modulator in the path of said reference beam for cyclically offsetting the light from said reference beam.

Claim 6

Dependent Claim 70 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 1 wherein said means for cyclically temporally offsetting the relationship between said reference and object beams in a continuous manner over the period of a cycle constitutes a modulator in the path of said incident object beam whereby said object beam is cyclically offset in time.

Claim 7

Dependent Claim 28 words

means for combining said light reference beam and said object beam thereby to provide a light interference pattern containing information relative to conjugate images of the said object.

Claim 8

Dependent Claim 28 words

means for combining said light reference beam and said object beam thereby to provide a light interference pattern containing information relative to conjugate images of the said object.

Claim 9

Dependent Claim 65 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 1 wherein said means for cyclically temporally offsetting the relationship between said reference and object beams in a continuous manner over the period of a cycle constitute modulating means for temporally offsetting both said reference and object beams in opposite senses.

Claim 10

Dependent Claim 46 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 1, scanning means for scanning said image information beam thereby to produce electrical wave forms having frequencies corresponding to said conjugate images.

Claim 11

Dependent Claim 205 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, as defined in claim 5, including additionally a pair of individual output channels connected to receive said electrical wave forms produced by said scanning means and having frequencies corresponding to said conjugate images, each of said output channels having a product detector, a lowpass filter and a display device serially connected, the said product detector in one output channel multiplying the electrical wave forms from said scanning means by a cosine function of frequency and time and the other product detector in said other channel multiplying the electrical wave forms produced by said scanning means by a sine function of the same frequency and time thereby to produce electrical wave forms containing the real and imaginary parts of the conjugate image terms each in one of said two output channels, said lowpass filter means provided for eliminating undesired frequencies in said electrical wave forms, and each of said display means provided for producing a display of one of the real and imaginary parts of said conjugate images whereby a separate individual recording can be made of the real and imaginary parts of said conjugate images.

Claim 12

Dependent Claim 72 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 1, scanning means for scanning said image information beam and producing a midband frequency spectrum including information corresponding to the square of the amplitude of the said object and reference beams, and frequency sidebands separated from said midband frequency spectrum including information relative to the said conjugate images.

Claim 13

Dependent Claim 60 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 7, display means connected to receive electrical wave forms from the said scanning means thereby to produce a visual display of the said conjugate image information in said sidebands whereby a hologram recording may be made.

Claim 14

Dependent Claim 38 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, as defined in claim 7, film means for recording the visual display of the said conjugate image information.

Claim 15

Dependent Claim 82 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 7, electrical circuit means for receiving the electrical wave forms from said scanning means including filter means for passing only the said sideband frequency spectra containing the conjugate light information, and display means for displaying the complex light pattern containing the conjugate image light information passed by the said filter means whereby the hologram recording may be made.

Claim 16

Dependent Claim 58 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed as defined in claim 10, mixer means connected to receive the said electrical wave forms from the said scanning means and to heterodyne the center frequency of the said image information containing sidebands down to a lower frequency.

Claim 17

Dependent Claim 66 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident object beam of light whereby said light is scattered by said object forming an object beam with its axis perpendicular to a plane of interference pattern, B. means for forming an image information beam which includes

Claim 18

Dependent Claim 66 words

In a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident object beam of light whereby said light is scattered by said object forming an object beam with its axis perpendicular to a plane of interference pattern, B. means for forming an image information beam which includes

Claim 19

Dependent Claim 227 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, a hologram camera means for generating electrical wave forms from light information necessary to produce a hologram from which the conjugate images of an object may be reconstructed, a pair of individual output channels connected to receive said electrical wave forms produced by said scanning means and having frequencies corresponding to said conjugate images, each of said output channels having a product detector, a lowpass filter and a display device serially connected, the said product detector in one output channel multiplying the electrical wave forms from said scanning means by a cosine function of frequency and time and the other product detector in said other channel multiplying the electrical wave forms produced by said scanning means by a sine function of the same frequency and time thereby to produce electrical wave forms containing the real and imaginary parts of the conjugate image terms each in one of said two output channels, said lowpass filter means provided for eliminating undesired frequencies in said electrical wave forms, and each of said display means provided for producing a display of one of the real and imaginary parts of said conjugate images whereby separate individual recordings can be made of the real and imaginary parts of said conjugate images.

Claim 20

Dependent Claim 227 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, a hologram camera means for generating electrical wave forms from light information necessary to produce a hologram from which the conjugate images of an object may be reconstructed, a pair of individual output channels connected to receive said electrical wave forms produced by said scanning means and having frequencies corresponding to said conjugate images, each of said output channels having a product detector, a lowpass filter and a display device serially connected, the said product detector in one output channel multiplying the electrical wave forms from said scanning means by a cosine function of frequency and time and the other product detector in said other channel multiplying the electrical wave forms produced by said scanning means by a sine function of the same frequency and time thereby to produce electrical wave forms containing the real and imaginary parts of the conjugate image terms each in one of said two output channels, said lowpass filter means provided for eliminating undesired frequencies in said electrical wave forms, and each of said display means provided for producing a display of one of the real and imaginary parts of said conjugate images whereby separate individual recordings can be made of the real and imaginary parts of said conjugate images.

Claim 21

Dependent Claim 88 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional image of a three-dimensional object may be reconstructed, hologram camera means for generating electrical wave forms from light informatIon necessary to produce a hologram from which the conjugate images of an object may be reconstructed, at least one individual output channel connected to receive the said electrical wave forms produced by said scanning means, said output channel having a product detector, a lowpass filter and a display device serially connected.

Claim 22

Dependent Claim 88 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional image of a three-dimensional object may be reconstructed, hologram camera means for generating electrical wave forms from light informatIon necessary to produce a hologram from which the conjugate images of an object may be reconstructed, at least one individual output channel connected to receive the said electrical wave forms produced by said scanning means, said output channel having a product detector, a lowpass filter and a display device serially connected.

Claim 23

Independent Claim 223 words

A method for producing a hologram recording on a single substrate including generating an image-information beam containing an interference pattern with information to reconstruct a three-dimensional image of a three-dimensional object, producing an interference pattern therefrom, scanning said interference pattern thereby to produce electrical wave forms containing image information, multiplying said electrical wave form by one of sine and cosine function of a frequency-time product whereby information relative to one of real and imaginary image components of the conjugate image of said object generated, generating a display from said electrical wave forms on a display device whereby a light beam containing said image information is formed, positioning a recording film which consists of vertically and horizontally polarized filters to receive light from said display means and positioning a linear polarizer in one of the said light beams containing image information so that it is oriented in one of its vertical and horizontal polarizations whereby one of the real and imaginary image components of light waves are recorded on said film, rotating said linear polarizer to the opposite one of its vertical and horizontal polarization and multiplying the said electrical wave form by the other of said sine and cosine functions of the frequency-time product thereby to record on said film the opposite of said real and imaginary components of the said light waves.

Claim 24

Independent Claim 223 words

A method for producing a hologram recording on a single substrate including generating an image-information beam containing an interference pattern with information to reconstruct a three-dimensional image of a three-dimensional object, producing an interference pattern therefrom, scanning said interference pattern thereby to produce electrical wave forms containing image information, multiplying said electrical wave form by one of sine and cosine function of a frequency-time product whereby information relative to one of real and imaginary image components of the conjugate image of said object generated, generating a display from said electrical wave forms on a display device whereby a light beam containing said image information is formed, positioning a recording film which consists of vertically and horizontally polarized filters to receive light from said display means and positioning a linear polarizer in one of the said light beams containing image information so that it is oriented in one of its vertical and horizontal polarizations whereby one of the real and imaginary image components of light waves are recorded on said film, rotating said linear polarizer to the opposite one of its vertical and horizontal polarization and multiplying the said electrical wave form by the other of said sine and cosine functions of the frequency-time product thereby to record on said film the opposite of said real and imaginary components of the said light waves.

Claim 25

Dependent Claim 143 words

In combination in a system for reconstructing an image of an object from a film transparency which consists of vertically and horizontally polarized filters on which separate recordings of vertically and horizontally polarized components of a light wave have been made including light producing means to project a circularly polarized plane wave through said transparency, linear polarizer means positioned in the said light from said light producing means and oriented with its axis of polarization displayed substantially 45* relative to both the vertically and horizontally polarized portions of the incident light whereby light transmitted through the linear polarizer effectively combines equal components from the vertically and horizontally polarized portions of the incident light and thereby combines equal components from real and imaginary image components from the said transparency, and means to focus light transmitted thereby to reconstruct an image of the original object.

Claim 26

Dependent Claim 143 words

In combination in a system for reconstructing an image of an object from a film transparency which consists of vertically and horizontally polarized filters on which separate recordings of vertically and horizontally polarized components of a light wave have been made including light producing means to project a circularly polarized plane wave through said transparency, linear polarizer means positioned in the said light from said light producing means and oriented with its axis of polarization displayed substantially 45* relative to both the vertically and horizontally polarized portions of the incident light whereby light transmitted through the linear polarizer effectively combines equal components from the vertically and horizontally polarized portions of the incident light and thereby combines equal components from real and imaginary image components from the said transparency, and means to focus light transmitted thereby to reconstruct an image of the original object.

Claim 27

Dependent Claim 128 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. hologram camera means for producing an interference pattern from object and reference means on an interference plane having light information for reconstruction of a three-dimensional image of a three-dimensional object, B. said hologram camera including a phase shifting device for shifting the relative phase of the said object and reference beams, C. a storage type television camera which integrates incident light for an entire frame interval and destructively reads out the stored value for each element positioned to receive the said interference pattern and produce an output electrical wave form representative thereof, D. phase splitter means connected to receive the output of said storage camera

Claim 28

Dependent Claim 128 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. hologram camera means for producing an interference pattern from object and reference means on an interference plane having light information for reconstruction of a three-dimensional image of a three-dimensional object, B. said hologram camera including a phase shifting device for shifting the relative phase of the said object and reference beams, C. a storage type television camera which integrates incident light for an entire frame interval and destructively reads out the stored value for each element positioned to receive the said interference pattern and produce an output electrical wave form representative thereof, D. phase splitter means connected to receive the output of said storage camera

Claim 29

Dependent Claim 186 words

In combination in a system for producing a hologram recording especially adaptable for use with incoherent illumination and from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. a triangular interferometer in the path of said object beam whereby part of said object beam travels a triangular path in a clockwise fashion and another part of said object beam travels a triangular path in a counter-clockwise direction, C. a lens system in one leg of said triangular interferometer thereby to form two images of the said object on the same center but of different sizes whereby corresponding object points on the two images interfere, D. a light modulator means in the path of said light beams in the said interferometer which shifts the frequency of clockwise and counter-clockwise beams in opposite senses, and E. a hologram recorder for producing a holographic recording to an interference pattern produced by interference between corresponding object points on the said two images.

Claim 30

Dependent Claim 186 words

In combination in a system for producing a hologram recording especially adaptable for use with incoherent illumination and from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. a triangular interferometer in the path of said object beam whereby part of said object beam travels a triangular path in a clockwise fashion and another part of said object beam travels a triangular path in a counter-clockwise direction, C. a lens system in one leg of said triangular interferometer thereby to form two images of the said object on the same center but of different sizes whereby corresponding object points on the two images interfere, D. a light modulator means in the path of said light beams in the said interferometer which shifts the frequency of clockwise and counter-clockwise beams in opposite senses, and E. a hologram recorder for producing a holographic recording to an interference pattern produced by interference between corresponding object points on the said two images.

Claim 31

Independent Claim 215 words

A method of producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed for generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern thereby to produce electrical wave forms containing image information, displaying an image produced by said wave forms on the face of a display means, and recording said intensity pattern on a transparency, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern and inverting (negative) the electrical waveforms so produced, displaying an image produced on display means by the said inverted wave forms and recording the image so displayed, producing a second set of stored images first using the phase shift of pi /2 radians, scanning the resultant interference pattern to produce electrical wave forms reinverting the said wave forms (positive) producing an image on said display means and storing said information of a second transparency, shifting the relative phase of the said object and reference beams another pi /2 radians, scanning the interference pattern and producing electrical wave forms, inverting the said wave forms (negative)and producing an image from said wave form on the said display means, and recording the resultant intensity pattern on said second transparency.

Claim 32

Independent Claim 215 words

A method of producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed for generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern thereby to produce electrical wave forms containing image information, displaying an image produced by said wave forms on the face of a display means, and recording said intensity pattern on a transparency, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern and inverting (negative) the electrical waveforms so produced, displaying an image produced on display means by the said inverted wave forms and recording the image so displayed, producing a second set of stored images first using the phase shift of pi /2 radians, scanning the resultant interference pattern to produce electrical wave forms reinverting the said wave forms (positive) producing an image on said display means and storing said information of a second transparency, shifting the relative phase of the said object and reference beams another pi /2 radians, scanning the interference pattern and producing electrical wave forms, inverting the said wave forms (negative)and producing an image from said wave form on the said display means, and recording the resultant intensity pattern on said second transparency.

Claim 33

Independent Claim 218 words

A method for producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed, generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern with conjugate image information, scanning the said interference pattern thereby to produce electrical wave forms containing image information, multiplying said wave forms by the function cos omega t, displaying an image of the resultant wave form on a display means, and storing the image so produced on a transparency, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern thereby to produce an electrical wave form, multiplying said wave form by the function -(cos omega t + sin omega t) to multiply the output of the said storage camera by this function, and storing the resultant image produced on the face of the said image display means on the said transparency, provide a relative phase shift of pi radians between the said interference pattern producing reference and object beams, scanning said interference pattern to produce electrical wave forms, multiplying the said wave forms by the function sin omega t, thereby to multiply the output of said storage camera by this function and storing the image produced by the said image display means.

Claim 34

Independent Claim 218 words

A method for producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed, generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern with conjugate image information, scanning the said interference pattern thereby to produce electrical wave forms containing image information, multiplying said wave forms by the function cos omega t, displaying an image of the resultant wave form on a display means, and storing the image so produced on a transparency, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern thereby to produce an electrical wave form, multiplying said wave form by the function -(cos omega t + sin omega t) to multiply the output of the said storage camera by this function, and storing the resultant image produced on the face of the said image display means on the said transparency, provide a relative phase shift of pi radians between the said interference pattern producing reference and object beams, scanning said interference pattern to produce electrical wave forms, multiplying the said wave forms by the function sin omega t, thereby to multiply the output of said storage camera by this function and storing the image produced by the said image display means.

Claim 35

Dependent Claim 192 words

In a combination in a system for producing a hologram from which a three-dimensional image of an object may be reconstructed A. A source of coherent illumination directed toward the object the image of which is to be reconstructed, B. a beam splitter between said source of coherent illumination and said object whereby part of said illumination impinges upon and is scattered from said object and part of said illumination is directed along a second path constituting a reference beam C. light modulation means in said second path for cyclically modulating said reference beam, in a continuous manner over the period of a cycle D. means for combining said modulated light beam with illumination scattered from said object thereby to form an image information beam, E. scanning means to scan said image information beam thereby to generate electrical wave forms with frequencies representing said image information, F. image producing means connected to receive electrical wave forms generated by said scanning means and produce a holographic image for recording, and G. electrical circuit means connected to receive the said electrical wave forms from said scanning means and to supply said image reproducing means,

Claim 36

Dependent Claim 192 words

In a combination in a system for producing a hologram from which a three-dimensional image of an object may be reconstructed A. A source of coherent illumination directed toward the object the image of which is to be reconstructed, B. a beam splitter between said source of coherent illumination and said object whereby part of said illumination impinges upon and is scattered from said object and part of said illumination is directed along a second path constituting a reference beam C. light modulation means in said second path for cyclically modulating said reference beam, in a continuous manner over the period of a cycle D. means for combining said modulated light beam with illumination scattered from said object thereby to form an image information beam, E. scanning means to scan said image information beam thereby to generate electrical wave forms with frequencies representing said image information, F. image producing means connected to receive electrical wave forms generated by said scanning means and produce a holographic image for recording, and G. electrical circuit means connected to receive the said electrical wave forms from said scanning means and to supply said image reproducing means,

Claim 37

Dependent Claim 128 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. hologram camera means for producing an interference pattern from object and reference beams on an interference plane having light information for reconstruction of a three-dimensional image of a three-dimensional object, B. said hologram camera including a phase shifting device for shifting the relative phase of the said object and reference beams, C. a storage type television camera which integrates incident light for an entire frame interval and destructively reads out the stored value for each element positioned to receive the said interference pattern and produce an output electrical wave form representative thereof, D. phase splitter means connected to receive the output of said storage camera,

Claim 38

Dependent Claim 128 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. hologram camera means for producing an interference pattern from object and reference beams on an interference plane having light information for reconstruction of a three-dimensional image of a three-dimensional object, B. said hologram camera including a phase shifting device for shifting the relative phase of the said object and reference beams, C. a storage type television camera which integrates incident light for an entire frame interval and destructively reads out the stored value for each element positioned to receive the said interference pattern and produce an output electrical wave form representative thereof, D. phase splitter means connected to receive the output of said storage camera,

Claim 39

Dependent Claim 163 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. a triangular interferometer in the path of said object beam whereby part of said object beam travels a triangular path in a clockwise fashion and another part of said object beam travels a triangular path in a counter-clockwise direction, C. a lens system in one leg of said triangular interferometer thereby to form two images of the said object of different sizes whereby corresponding object points on the two imageS interfere, D. a light modulator means in the path of said light beams in the said interferometer which shifts the phase or frequency of clockwise and counter-clockwise beams in opposite senses, and E. storage means connected to receive the output from the said multiplier means.

Claim 40

Dependent Claim 163 words

In combination in a system for producing a hologram recording from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. a triangular interferometer in the path of said object beam whereby part of said object beam travels a triangular path in a clockwise fashion and another part of said object beam travels a triangular path in a counter-clockwise direction, C. a lens system in one leg of said triangular interferometer thereby to form two images of the said object of different sizes whereby corresponding object points on the two imageS interfere, D. a light modulator means in the path of said light beams in the said interferometer which shifts the phase or frequency of clockwise and counter-clockwise beams in opposite senses, and E. storage means connected to receive the output from the said multiplier means.

Claim 41

Independent Claim 163 words

A method of producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed for generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern thereby to produce electrical wave forms containing image information, storing image information contained in the said electrical wave forms, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern and inverting the electrical wave forms so produced, storing image information developed by the said electrical wave forms, producing additional image information first using the phase shift of pi /2 radians, scanning the resultant interference pattern to produce electrical wave forms, reinverting the said wave forms and storing said information, shifting the relative phase of the said object and reference beams another pi /2 radians, scanning the interference pattern and producing electrical wave forms, inverting the said wave forms and recording the resultant image information so produced.

Claim 42

Independent Claim 163 words

A method of producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed for generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern thereby to produce electrical wave forms containing image information, storing image information contained in the said electrical wave forms, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern and inverting the electrical wave forms so produced, storing image information developed by the said electrical wave forms, producing additional image information first using the phase shift of pi /2 radians, scanning the resultant interference pattern to produce electrical wave forms, reinverting the said wave forms and storing said information, shifting the relative phase of the said object and reference beams another pi /2 radians, scanning the interference pattern and producing electrical wave forms, inverting the said wave forms and recording the resultant image information so produced.

Claim 43

Independent Claim 202 words

A method for producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed, generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern with conjugate image information, scanning the said interference pattern thereby to produce electrical wave forms containing image information, multiplying said wave forms by the function cos omega t, and storing the image information contained therein on information storage means, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern thereby to produce an electrical wave form, multiplying said wave form by the function -(cos omega t + sin omega t) to multiply the output of the said storage camera by this function, and storing the resultant image information of the said information storage means, provide a relative phase shift of pi radians between the said interference pattern producing reference and object beams, scanning said interference pattern to produce electrical wave forms, multiplying the said wave forms by the function sin omega t, thereby to multiply the output of said storage camera by this function and storing the image information so produced on the said storage means.

Claim 44

Independent Claim 202 words

A method for producing transparency means from which a three-dimensional image of a three-dimensional object may be reconstructed, generating reference and object beams, combining said beams to generate an image information beam containing an interference pattern with conjugate image information, scanning the said interference pattern thereby to produce electrical wave forms containing image information, multiplying said wave forms by the function cos omega t, and storing the image information contained therein on information storage means, shifting the phase between the interference pattern producing reference and object beams by pi /2 radians, scanning said interference pattern thereby to produce an electrical wave form, multiplying said wave form by the function -(cos omega t + sin omega t) to multiply the output of the said storage camera by this function, and storing the resultant image information of the said information storage means, provide a relative phase shift of pi radians between the said interference pattern producing reference and object beams, scanning said interference pattern to produce electrical wave forms, multiplying the said wave forms by the function sin omega t, thereby to multiply the output of said storage camera by this function and storing the image information so produced on the said storage means.

Claim 45

Dependent Claim 129 words

In combination in a system for producing a hologram recording especially adaptable for use with incoherent illumination and from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. means for dividing said object beam into two paths thereby effectively to form first and second independent beams with object information therein whereby two images of said object may be produced having corresponding object points displaced, c. light modulator means in the path of said two light beams temporally offsetting the phase relationship between the said two light beams by shifting their phases in opposite senses thereby to produce a light interference pattern.

Claim 46

Dependent Claim 129 words

In combination in a system for producing a hologram recording especially adaptable for use with incoherent illumination and from which a three-dimensional image of a three-dimensional object may be reconstructed, A. means for illuminating the said object with an incident beam of light whereby said light is scattered by said object forming an object beam, B. means for dividing said object beam into two paths thereby effectively to form first and second independent beams with object information therein whereby two images of said object may be produced having corresponding object points displaced, c. light modulator means in the path of said two light beams temporally offsetting the phase relationship between the said two light beams by shifting their phases in opposite senses thereby to produce a light interference pattern.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-12-23	1978-06-24	1978-12-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-12-23	1982-06-24	1982-12-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-12-23	1986-06-24	1986-12-24	$7700.00	Window Closed / Lapsed

Scanned holography systems using temporal modulation

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