Abstract: A device for producing a two dimensional image includes means for generating coherent light, and means for directing light received from the means for generating coherent light to a plurality of electrically addressable spatial light modulators (EASLM). The device includes means for diffracting the light, wherein the light is simultaneously diffracted by the plurality of EASLM, and means for displaying the two dimensional image. The device further includes means for directing the diffracted light to the means for displaying the two dimensional image, wherein a frame rate of each of the plurality of EASLM is greater than a frame rate of the two dimensional image produced at the means for displaying the two dimensional image.

Abstract: An optical system capable of outputting hi-contrast images and multi-primary color or 3-dimensional images is provided. Light in primary colors RGB modulated in a first modulation optical system is transmitted through a relay lens 36 and further divided into a P-polarized light and an S-polarized light by a PS separation wire grid 37. The S-polarized light is transmitted through a wavelength spectral filter 39 to select red/green/blue light components R1, G1, B1 of 615, 515, 450 nm in wavelength, which are then modulated by a Y1 device 44. The P-polarized light is transmitted through a wavelength spectral filter 46 to select red/green/blue light components R2, G2, B2 of 650, 550, 475 nm in wavelength, which are then modulated by a Y2 device 51. The 3-primary color lights modulated by the Y1/Y2 devices 44, 51 are combined with each other at a PS composite wire grid 55 to project a synthetic light on a screen.

Abstract: A hologram recording method for recording information of signal light as holograms in an optical recording medium, which includes illuminating signal light at the optical recording medium; illuminating reference light at the optical recording medium simultaneously with the signal light such that an interference pattern is formed by the signal light and the reference light intersecting in the optical recording medium; and shifting a region in the optical recording medium at which the signal light and the reference light intersect, by shifting an illumination position of the reference light along an optical axis of the signal light, thereby recording a plurality of holograms in the recording medium.

Abstract: In recording of information, an information beam as S-polarization is incident on an optical information recording medium. After passing through the optical information recording medium, the information beam is reflected by reflection apparatus and passes through a polarization controller. In this process, the information beam undergoes S-polarization control and the polarization direction changes to P-polarization direction. The information beam interferes with a recording reference beam as P-polarization incident on a surface of the optical information recording medium inside the optical information recording medium to form an interference pattern. In reproduction of information, a reproduction reference beam is incident on the surface of the optical information recording medium. The reproduction reference beam is then diffracted by a refractive index grating caused by an interference pattern formed in the optical information recording medium to form a reproduction beam.

Abstract: The present invention relates to an apparatus for reading from and/or writing to holographic storage media, and more specifically to a common aperture type apparatus for reading from and/or writing to holographic storage media with multiple reference beams having a reduced noise. In a common aperture type apparatus for reading from and/or writing to a holographic storage medium using shift-multiplexing, with a coaxial arrangement of two or more reference beams and an object beam or a reconstructed object beam, the reference beams being arranged around the object beam or the reconstructed object beam in a storage layer of the holographic storage medium, each of the reference beams is located essentially halfway between two adjacent central peaks of shift-multiplexed holograms.

Abstract: In recording of an interference fringe of a reference beam and a signal beam in a hologram recording medium, at the time of multiple recording of holograms in the same recording region by varying the angle of incidence of the reference beam on the hologram recording medium, the angular pitch of the incidence angle of the reference beam is varied according to the incidence angle of the reference beam in the manner of ??1, ??2, . . . , ??m?1, and is thereby set to a minimum in such a range as not to worsen crosstalk. This makes it possible to increase the degree of multiplexing when the movable angle of the reference beam is the same, and to narrow the movable angle of the reference beam when the degree of multiplexing is the same, as compared with the related art.

Abstract: Even when a tilt error is caused in a holographic memory in a direction perpendicular to a surface including optical axes of a signal beam and a reference beam, the signal beam and the reference beam are allowed to enter the holographic memory at adequate angles relative thereto at all times by suppression of the tilt error. During recording and reproducing operations, the reference incident angle of the reference beam in the radial tilt direction is detected based on a received light state. A tilt actuator for displacing the holographic memory medium in the radial tilt direction is driven to adjust an incident angle of the reference beam in the radial tilt direction to the reference angle Sr. Then, the signal beam and the reference beam are emitted to the holographic memory medium to execute the recording and reproducing operations.

Abstract: A system and method for displaying holographic images to the naked eye. The scattering of light by objects in real space is simulated using a two-dimensional holographic display, giving images depth. The display comprises a plurality of small holographic pixels, each displaying a different perspective of the three dimensional space. In some embodiments, digital micromirror devices (DMDs), which are a well developed technology, are combined with simple optical lenses. Other embodiments include the ability to display holographic images from a distant source in real time, or from a recording.

Abstract: The invention relates devices for recording or reading out an encoded hologram. Said devices are arranged to record or to read out spatially separated data structures, as well as mutually spatially separated data holograms (36) and positioning holograms (37) associated with positioning structures that are structurally simple compared to the data structures. Said positioning holograms (37) can be analyzed separately from the data holograms (36) in order to align a modulation pattern in an iteration. The hologram can thus be correctly aligned relatively easily even in the event of complex data structures or modulation structures.

Abstract: A hologram-recording method including recording a reflection-type volume hologram onto an optical recording medium by irradiating the optical recording medium with a modulated beam obtained by spatially modulating a laser beam and a diffused beam obtained by diffusing the modulated beam, coaxially but from different sides of the optical recording medium, respectively. The invention provides a hologram-recording method, an optical recording medium, and a hologram-recording device that enables on-demand recording of a reflection-type volume hologram which reliably prohibits forgery or alteration with a simple device configuration.

Abstract: The number M of a plurality of multiplexed recording mediums to be recorded in a projected area S on the surface of a recording medium satisfies the equation (1?) where n represents the refractive index of the recording medium, ? the wavelength in vacuum of light used to record and reproduce information, L the thickness of the recording medium, ±NAR the range of an angular spectrum in air of a reference beam, ±NAS the range of an angular spectrum in air of a reproduced beam applied to a light detector, S the projected area of a recording region to be recorded in one recording cycle onto the surface of the recording medium, N the number of bits to be recorded in one recording cycle, and Z the signal vs. signal noise ratio as a target ratio (Z=3).

Abstract: A device for forming an image on a screen is described that comprises a coherent illumination means, an electrically addressed spatial light modulator means located in the path of light from the coherent illumination means, means for producing computer generated hologram images for display on the electrically addressed spatial light modulator means, and optics to direct light diffracted by the electrically addressed spatial light modulator means to the screen. The device is arranged so that a computer generated image or images displayed by the electrically addressed spatial light modulator means result in a two dimensional image being formed at the screen.

Abstract: Disclosed is a surface relief structure. The structure includes a recording medium configured to be structurally modified when exposed to interfering and non-interfering portions of radiation beams, the structurally modified recording medium including, when viewed in a two-dimensional cross-section along one of the axes of the recording medium a plurality of equally spaced steps of fine-sized periodicity superimposed upon a plurality of deep depressions of substantially coarse-sized periodicity. The structurally modified recording medium is configured to produce in reflection single and multiple colors in a broad spectral range when illuminated by a source of light.

Abstract: The present invention relates to a holographic recording apparatus that records on a multiple basis information on a holographic memory. An object of the present invention is to provide a holographic recording apparatus capable of avoiding problems of recording error of data and destruction of the existing data, which will occur when the medium of the specification shortages is used.

Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.

Abstract: The present invention relates to an apparatus for reading from and/or writing to holographic storage media, and more specifically to an apparatus for reading from and/or writing to holographic storage media having an improved overlap between one or more reference beams and an object beam or a reconstructed object beam. According to the invention, the apparatus has a common aperture arrangement of a reference beam and an object beam or a reconstructed object beam, wherein the focus of the reference beam is shifted relative to the focus of the object beam or the reconstructed object beam within a focal plane of the object beam or the reconstructed object beam inside or close to the holographic storage medium.

Abstract: A hologram recording apparatus includes a laser light source for emitting laser light, a light splitter for splitting the laser light emitted from the laser light source into a signal beam and a reference beam, a light modulator for modulating the signal beam split by the light splitter, a phase modulator for phase-modulating the reference beam split by the light splitter, an optical system for collecting the signal beam modulated by the light modulator and the reference beam phase-modulated by the phase modulator onto almost the same collecting position on a hologram recording medium, a collecting-position control mechanism for controlling the collecting position along a surface of the hologram recording medium, and a distance control mechanism for controlling the distance between the phase modulator and the hologram recording medium.

Abstract: Disclosed herein is an optical modulator module package using a flip-chip mounting technology, in which an optical modulator device is hermetically mounted using the flip-chip mounting technology. The optical modulator device is protected from an external environment, it is easy to transmit an electrical signal to the exterior, and optical characteristics of the optical modulator device are desirably maintained.

Abstract: A hologram recording apparatus includes a laser light source for emitting laser light, a light splitter for splitting the laser light emitted from the laser light source into a signal beam and a reference beam, a light modulator for modulating the signal beam split by the light splitter, a phase modulator for phase-modulating the reference beam split by the light splitter, an optical system for collecting the signal beam modulated by the light modulator and the reference beam phase-modulated by the phase modulator onto almost the same collecting position on a hologram recording medium, a collecting-position control mechanism for controlling the collecting position along a surface of the hologram recording medium, and a distance control mechanism for controlling the distance between the phase modulator and the hologram recording medium.

Abstract: A holographic recording medium having a recording layer on which holograms are formed by interference between an object beam and a reference beam to thereby record information. The recording layer is formed with a plurality of hologram groups each composed of a plurality of holograms. The holograms in each of the hologram groups have the same information, and adjacent holograms partially overlap each other. In addition, the holograms are arranged to be spaced apart from holograms in other hologram groups.

Abstract: A hologram recording medium, and a recording apparatus and a reproducing apparatus for the same, by which scattered beam noise is minimized and recording capacity is increased using spatial separation and polarization separation in an optical system where a reference beam and an object beam travel through the same optical path. The provided hologram recording medium includes a recording layer into which an object beam and a reference beam are radiated to record data of the object beam as interference fringes, and first and second phase difference layers arranged above and below the recording layer, respectively, to convert the polarization of an incident beam.

Abstract: A hologram recording method includes generating a signal beam with data formed by superimposing pattern data, the pattern data representing a pattern in which a large number of plural kinds of pixels having different tone values are arranged in a two-dimensional manner, on an image data of respective pixels represented by tone values corresponding to density, and recording a hologram by irradiating a converted beam formed by Fourier transformation of the generated signal beam with a lens and a reference beam to an optical recording medium.

Abstract: Provided are an apparatus for retroreflecting reference beams and a holographic information recording/reproducing device employing the same. The apparatus for retroreflecting reference beams for use in a holographic information recording/reproducing device for recording/reproducing information on/from a holographic recording medium includes a lens focusing reference beams transmitted through the holographic recording medium at different incident angles with respect to the holographic recording medium to form spots at different positions in a focal plane; and a mirror disposed at the focal plane and retroreflecting the spots created by the lens toward the holographic recording medium.

Abstract: A holographic data recording apparatus includes: a signal beam patterning unit for irradiating a signal beam onto a holographic medium, the signal beam including a data pattern to be recorded; a cylindrical optical body including a cylindrical reflective surface, by which a first and a second reference beams alternatively incident thereto at incident angles are reflected toward the holographic medium, alternatively; and an incident angle control unit for controlling the incident angles of the first and the second reference beams incident on the cylindrical optical body, wherein the data, pattern is recorded on the holographic medium by interfering the signal beam with the first and the second reference beams on the holographic medium. The holographic data recording apparatus do not require the replacement of the conventional conical mirrors while recording a plurality of data on a holographic medium, thereby increasing the recording speed and reducing the manufacturing cost thereof.

Abstract: A spatial light modulator, in which light modulation elements are arranged in a same plane. In the spatial light modulator, a plurality of the light modulation elements are arranged such that there are at least two periods of periodic structure corresponding to an arrangement of the light modulation elements in an arbitrary direction in the plane where the light modulation elements are arranged.

Abstract: An optical information processing apparatus includes: a light source; a reference beam guiding optical system guiding a reproducing reference beam emitted from the light source to an optical information storage medium in which optical information is recorded at multiplexing angles; a signal beam guiding optical system guiding a reproduced signal beam, which is reproduced from the optical information storage medium in the coaxial line with the reproducing reference beam and in the opposite direction of the traveling direction of the reproducing reference beam and is a phase-conjugation wave of a recording signal beam used at the time of recording the optical information; and an optical information detector detecting the reproduced signal beam guided by the signal beam guiding optical system. Accordingly, it is possible to reduce the manufacturing cost, to enhance the multiplexing density of optical information, and to simplify and miniaturize the entire optical information processing apparatus.

Abstract: An interference lithography system is described that is capable of exposing high resolution patterns in photosensitive media and employing yield increasing active stabilization techniques needed in production environments. The inventive device utilizes a division-of-wavefront interference lithography configuration which divides a single large field size optical beam using one or more mirrors, and is actively stabilized with a subsystem employing; a phase modulator operating on each divided wavefront section; a novel feedback apparatus for observing the relative phase shifts between interfering wavefront sections; and a control system for holding the relative phase shifts constant.

Abstract: A holographic reconstruction apparatus is provided. The holographic reconstruction apparatus reconstructs recording data recorded on a holographic recording medium from diffracted light generated by emitting reference light from a laser light source to the holographic recording medium.

Abstract: An apodization system for achieving a substantially uniform intensity profile of a modulated reference beam on a holographic recording medium. The substantially uniform intensity profile serves to improve the quality of any and all recorded holograms. In high-density holographic storage, the apodization system reduces the required hologram extent while still, maintaining any fidelity constraints (power budget, imaging tolerances, error-rate, noise floor). Furthermore, in high-fidelity holographic storage, better control of the hologram recording parameters can be established. The improved control allows tighter specifications on the image quality to be achieved.

Abstract: An optical apparatus comprises a planar optical waveguide having at least two reflectors. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical signals propagating therein, and the reflectors define an optical resonator that supports at least one resonant optical cavity mode. At least one of the reflectors comprises a set of diffractive elements arranged: so that an optical signal in one of the resonant optical cavity modes is successively incident on the diffractive elements; so as to exhibit a positional variation in amplitude, optical separation, or spatial phase; and so as to apply a transfer function to the optical signal successively incident on the diffractive elements. The transfer function is determined at least in part by said positional variation in amplitude, optical separation, or spatial phase exhibited by the diffractive elements.

Abstract: An optical apparatus comprises a planar optical waveguide and at least one set of diffractive elements formed in or on the waveguide. The waveguide is arranged to confine propagating optical signals in at least one transverse dimension. The diffractive element set collectively exhibits a positional variation in diffractive amplitude, optical separation, or spatial phase over some portion of the set. The diffractive element set is collectively arranged to route, as an output optical signal, between corresponding input and output optical ports, a corresponding diffracted portion of an input optical signal. The diffractive element set is collectively arranged so that the input optical signal or the output optical signal is successively incident on the diffractive elements.

Abstract: A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from the laser light source, the signal light and the reference light traveling in a common light path; a first relay lens system including a first shielding plate at a focal position thereof and transmitting the signal light and the reference light generated by the spatial light modulator, the first shielding plate having a pinhole whose size is 1 to 2 times a Nyquist size; a phase modulating element disposed at a conjugate plane of the signal light and the reference light transmitted through the first relay lens system; an objective lens converging the signal light and the reference light transmitted through the phase modulating element on a hologram recording medium; and a light receiving system disposed between the phase modulating element and objective lens and receiving light returning from the hologram recording me

Abstract: The present invention provides a spatial flexure comprising: a base section; an end section; and an intermediate laterally contracting and expanding section connecting the base and end sections, whereby when the intermediate section laterally expands or contracts, the end section pivots downwardly or upwardly. The present invention further provides a spatial flexure scanner comprising: a base section; a scanning beam reflective section; an intermediate laterally contracting and expanding section connecting the base and reflective sections; an actuator associated with the base section; a scanning beam reflective mirror connected to the reflective section; means connecting the actuator and the reflective member for causing lateral contraction or expansion of the intermediate section in response to the actuator, whereby when the intermediate section laterally expands or contracts, the reflective section pivots downwardly or upwardly.

Abstract: A generator of duality modulated radiation, of which the irradiance, the wave intensity, or both, are varied from ordinarily equivalent levels, either for purposes of providing energy depleted or energy enriched radiation or for purpose of encoding an information signal. Various techniques are disclosed for restoring irradiance levels to “ordinary” levels, or for amplifying irradiance without affecting wave intensity. A communication system employing duality modulated radiation is also disclosed.

Abstract: There is provided a hologram reconstruction method including: onto an optical recording medium in which a hologram is recorded by simultaneously irradiating the Fourier transformed signal beam representing a digital data with a bright and dark image and removing a DC component and the Fourier transformed reference beam thereon, irradiating a first reference beam for reading out that is the same as the reference beam to generate a first diffracted light generated by the recorded hologram, and synthesizing a DC component of a predetermined phase with the generated first diffracted light to generate a first synthesized light; detecting an inverse Fourier transformed image of the first synthesized light to obtain first image data; irradiating a second reference beam for reading out that differs from the reference beam onto the hologram recorded on the optical recording medium to generate a second diffracted light from the recorded hologram, and synthesizing a DC component of a predetermined phase with the generat

Abstract: Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and transmitting the diffracted optical signal to an output. A plurality of inputs and outputs may be coupled to the volume hologram. The transformation may be a linear superposition of transforms, with each transform acting on an input signal or on a component of an input signal. Each transform may act to focus one or more input signals to one or more output ports. A volume hologram may be made by various techniques, and from various materials. A transform function may be calculated by simulating the collision of a design input signal with a design output signal.

Abstract: Techniques for reading the spectral content of a spatial-spectral grating in an inhomogeneously broadened transition (IBT) material include directing multiple probe waveforms to probe a spatial mode of the IBT material. Each probe waveform is a linear frequency modulated chirp; each probe waveform partially overlaps in frequency with a different probe waveform; and multiple output signals are detected from the IBT material in response. Based on the multiple output signals, a readout signal is determined that represents a complete or nearly complete temporal map of the spectral content of the spatial-spectral grating. Calibration of the frequency content can be achieved by simultaneously reading out calibration spectral features. These techniques allow high-bandwidth spectral content to be read with segmented narrow bandwidth chirp probe waveforms and low-bandwidth high-dynamic-range detectors and digitizers.

Abstract: A slab optical waveguide confines in one transverse dimension optical signals propagating in two dimensions therein, and has a set of diffractive elements collectively arranged so as to exhibit positional variation in amplitude, optical separation, or spatial phase. The diffractive elements are collectively arranged so as to apply a transfer function to an input optical signal to produce an output optical signal. The transfer function is determined at least in part by said positional variation in amplitude, optical separation, or spatial phase. The waveguide and diffractive elements are arranged so as to confine only one of the input and output optical signals to propagate in the waveguide so that the optical signal thus confined is successively incident on the diffractive elements, while the other optical signal propagates unconfined by the waveguide in a direction having a substantial component along the confined dimension of the waveguide.

Abstract: System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment. A plurality of information bearing light beams in an information bearing light beam arm of a data recording system and a plurality of reference light beams in a reference light beam arm of the data recording system are mutually interfered to store a plurality of spatially separate, spatially modulated light intensity patterns in a holographic data storage medium in a data recording operation. During the data recording operation, the plurality of information bearing light beams are repeatedly circulated through the holographic data storage medium using a resonant cavity formed along the information bearing light beam arm of the holographic recording system.

Abstract: This invention provides a hologram recording apparatus for recording an interference fringe, generated by interference of a first light beam subjected to spatial light modulation by recording data with a second light beam, in a recording area of a hologram recording medium, the hologram recording apparatus including: a random phase body for randomizing the wave front of the second light beam, and a multiplex recording control unit for recording the interference fringe of the first light beam and the second light beam in the same recording area of the hologram recording medium each time the random phase body is rotated.

Abstract: A system and method capable of providing high data rate data copying and recording in holographic data storage while maintaining the copied data's signal-to-noise ratio. This is achieved by using optically-based parallel signal processing. In one preferred embodiment, the present invention uses a plurality of optical resonating cavities to provide thresholding and gain functions via positive feedback.

Abstract: A recording medium including a storage part to hold a medium identifier intrinsic to each recording medium, and a hologram generated using a reference beam modulated with the medium identifier. Preferably, the hologram is fixed on a surface of the recording medium.

Abstract: An apparatus for directing light beams onto a target comprising a beam splitter for splitting a main beam into a first split beam and a second split beam; a first beam path for the first split beam, the first beam path including a first aperture, a first lens and a second lens; a second beam path for the second split beam, the second beam path including a second aperture, a third lens and a fourth lens; a plurality of mirrors arranged such that the first split beam and the second split beam intersect at the target. An apparatus can also include means for placing a target in the image plane of a first aperture and a second aperture.

Abstract: An optical apparatus comprises a planar optical waveguide having at least two sets of diffractive elements. The planar optical waveguide substantially confines in at least one transverse spatial dimension optical signals propagating therein. The two diffractive element sets define an optical resonator that supports at least one resonant optical cavity mode. An optical signal in one of the resonant optical cavity modes is successively incident on the diffractive elements of each of the diffractive element sets.

Abstract: Disclosed herein is a method, system and computer readable medium for a distortion-tolerant 3-D object recognition that may include recording a single exposure digital hologram of a 3D object on a sensor by on-axis digital holography; representing the recorded single exposure digital hologram mathematically as a synthesized hologram and as a reconstructed complex wave function of the 3D object; repeating the steps above for at least one comparison 3D object and obtaining a comparison reconstructed complex wave function of the comparison 3D object; and constructing a correlation filter for 3D distortion-tolerant object recognition from the reconstructed complex wave function of the 3D object and from the at least one comparison reconstructed complex wave function of the comparison 3D object also recorded; and correlating the reconstructed complex wave function of the 3D object to the comparison reconstructed complex wave function of the comparison 3D object using the correlation filter in order to recognize 3D

Abstract: In a servo operation, position-controlling light, which is red light, is projected onto a recording medium so as to converge to a minimum diameter on a reflecting surface of the recording medium. In a recording operation, information light and recording-specific reference light, each of which is green light, are projected coaxially onto one side of an information recording layer of the recording medium so as to converge to a minimum diameter at an identical position located off the reflecting surface. Information is recorded in the information recording layer in the form of an interference pattern resulting from interference between the information light yet to impinge on the reflecting surface and the recording-specific reference light reflected by the reflecting surface and an interference pattern resulting from interference between the recording-specific reference light yet to impinge on the reflecting surface and the information light reflected by the reflecting surface.

Abstract: An angular multiplexing apparatus for a holographic storage medium. The angular multiplexing apparatus includes a reconstructing reference beam generator, translated in parallel to a number of positions, for generating a number of reconstructing reference beams which propagate in parallel to one another at the positions, respectively, and a mirror array having a plurality of planes of reflection for generating a plurality of reflected beams which are converged into a reconstructing position of the holographic storage medium.

Abstract: An optical interconnect comprises an input configured to receive light of a plurality of light wavelengths and a plurality of holographic optical elements. Each element configured to reflect one out of the plurality of light wavelengths and allowing others of the plurality of wavelengths to not be reflected. Each of a plurality of prisms is configured to rotate received light at a different angle than any of the other prisms. For each holographic optical element, one of the plurality of prisms is positioned to receive and rotate light reflected by that holographic element. Each of a plurality of beam splitters is positioned to receive light rotated by a respective one of the plurality of prisms and all the plurality of beam splitters direct light to an output of the optical interconnect.

Abstract: Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and transmitting the diffracted optical signal to an output. A plurality of inputs and outputs may be coupled to the volume hologram. The transformation may be a linear superposition of transforms, with each transform acting on an input signal or on a component of an input signal. Each transform may act to focus one or more input signals to one or more output ports. A volume hologram may be made by various techniques, and from various materials. A transform function may be calculated by simulating the collision of a design input signal with a design output signal.

Abstract: A system and method for forming an optical image having a screen on which is displayed an image which is to be reproduced on an image display plane. The image on the screen is optically transmitted in the form of a plurality of blocks to the image display plane and a block deflecting system associated with the display plane receives the plurality of optically transmitted blocks and displays them in the proper order on the image display plane.