Class 359/31 - Focused image holography

Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter in which an image of the intelligence to
No. of patents: 34
Last issue date: 03/18/2008

Number	Title	Issue Date
7345799	Optical recording medium and its use An optical recording medium which comprises a holographic recording layer on which information is recorded by means of holography, a light shield member fixed to at least one of main surfaces of the holographic recording layer, a control electrode for controlling a ...	03/18/2008
7265904	Optical security element The invention concerns an optical security element having a substrate layer, in which a first microstructure for producing a first optically perceptible effect is shaped region-wise in a surface region. The surface region is divided into microscopically fine pattern...	09/04/2007
7154648	Apparatus and method for fabricating hologram A hologram fabricating apparatus includes a coherent light generator, two micro-display devices and a telecentric system. The coherent light generator provides a first coherent light and a second coherent light. Each micro-display device has a plurality of pixel ele...	12/26/2006
7133587	Dispersion compensator, method for manufacturing the same, and method for compensating wavelength dispersion A dispersion compensator includes at least one first optical waveguide, a first slab waveguide, an arrayed waveguide connected to the at least one first optical waveguide via the first slab waveguide, a second slab waveguide, at least one second optical waveguide co...	11/07/2006
7088488	Spatial light modulator device with diffusive element The invention is directed to a spatial light modulator device that can improve holographic data recording systems, and various methods and systems incorporating the device. The spatial light modulator device includes a diffusive element to diffuse or scatter a data ...	08/08/2006
7073542	Liquid quantity determination unit, photolithography apparatus, and liquid quantity determination method The invention automates determination of the quantity of a index matching liquid. The invention is a liquid quantity determination unit to determine the quantity of a filling liquid to be filled between a plurality of optical components, and includes an inspe...	07/11/2006
6999071	Method and apparatus for displaying 3d images The invention relates to a method for displaying three-dimensional images. In the method light beams (Le) are associated to several different screen points (P) of a screen (20). The light beams (Le) produce different views associated to ...	02/14/2006
6831762	System and method for holographic storage with optical folding A system for recording and reading out holograms in a storage medium including a pattern encoder, a first fourier transform lens with a focal length f1, a second fourier transform lens with a focal length f2, a detector array, and a first and s...	12/14/2004
6817530	Multiple image security features for identification documents and methods of making same A method for making a secure identification document with multiple images is provided. Information is provided to an information bearing layer, the information constructed and arranged to be capable of providing multiple images when the printed information is viewed...	11/16/2004
6762865	Self-referenced holography using diffusive element The invention is directed to self-referenced holographic recording techniques that make use of a diffusive element. Self-referenced holography refers to holographic recording techniques in which a reference beam is created from a zero frequency Fourier component of ...	07/13/2004
6757087	Optical display An optical display provided with a hologram element and a light source, wherein the hologram is a reflection hologram formed by a light beam which is obtained by utilizing light passing through a slit and has information on an object and a reference light beam which...	06/29/2004
6753989	Recording surface relief microstructure A method of recording a surface relief microstructure in a record medium includes: i) causing a coherent reconstruction or replay beam to impinge on a holographic optical element assembly, the holographic optical element assembly including a holographic optic...	06/22/2004
6597478	Phase-conjugate holographic data storage device using a multifocal lens and data storage method thereof A phase-conjugate holographic data storage device capable of enhancing the characteristics of recording and reproducing data by using a focusing lens is provided. The holographic data storage device includes a focusing lens which focuses an object beam ha...	07/22/2003
6407833	System and method for producing and displaying a one-step, edge-lit hologram A system and method are disclosed for producing and displaying a one-step, edge-lit hologram. For production, an object beam and an edge-lit reference beam are directed at holographic recording material and to interfere with one another. The holographic r...	06/18/2002
6369919	Holographic security device A holographic security device comprising first and second holographic generating structures (2,3) recorded in respective sets of substantially non-overlapping regions of a record medium is disclosed. The regions of one set are interleaved with regions of ...	04/09/2002
6297894	Optical scheme for holographic imaging of complex diffractive elements in materials This invention discloses optical system and method for writing a refractive index pattern in a light transmissive or light absorbing sample. A light source for providing a short pulse laser beam in the femtosecond range having a low power per unit area is...	10/02/2001
5989923	Hologram containing sensor The invention relates to a sensor (9) comprising a hologram (17) supported on or within a holographic support medium (10). A species to be detected is reactive with a substance disposed throughout, the sensor (9). Optionally, a chemical reactive with a species...	11/23/1999
5291321	Method and apparatus for making hologram A method and an apparatus for making a hologram wherein interference patterns to be recorded on a hologram plate are prevented from travelling, thereby enabling a high quality hologram to be made. The method comprises the steps of forming a monitoring hol...	03/01/1994
5138471	Holocomposer A method is disclosed for making holographic images by recording an array of pixels which together form a two or three dimensional composite image. Each pixel corresponds to a sampling of just those rays which would pass through a given point on the surfa...	08/11/1992
4925260	One step rainbow holography Improved optical holographic apparatuses are disclosed for making white light viewable rainbow holograms in one step utilizing concave mirror optics. On-axis and off-axis configurations are presented for holography of real objects and for reduced image ho...	05/15/1990
4466693	Holographic straightness meter A holographic straightness meter comprising an optical element and a hologram disposed on a moving member and one pair of reflection elements disposed on a fixed member. The object beam and reference beam from the optical element are reflected by the refl...	08/21/1984
4415225	Methods of making holographic images A process of making holographic images comprising the steps of recording a hologram of a parallax limited aerial image formed by a lens on a recording surface with a reference beam at an angle of incidence to the recording surface that is preferably equal...	11/15/1983
4213673	Projector for reading out color-encoded focused image holograms employing an optimum encoding scheme An encoding scheme, in readout, generates a spatially separated entire spectrum for each one of the three primary colors. This permits spatially separated color filters to select each primary color from its own spectrum....	07/22/1980
4206965	System for synthesizing strip-multiplexed holograms A system for synthesizing strip-multiplexed holograms, with or without coherent light, from a plurality of two-dimensional images. The two-dimensional images may be formed by a motion picture film of a rotating subject such that each image is a view of th...	06/10/1980
4165930	Camera having a holographic indicator A camera having a holographic indicator in which a reconstructed image of hologram and an image of an object formed by an image forming optical system are formed on the same plane, so that the reconstructed image and the object's image can be observed at ...	08/28/1979
4037919	Holographic device with divided object beams, a multicolor light source and direction-selective screen A holographic device comprises a film for displaying a three-dimensional object as images, each of which is obtained as viewed in a respective one of a plurality of different directions, a phase plate for providing a light beam for illuminating each of sa...	07/26/1977
4017158	Spatial frequency carrier and process of preparing same 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 o...	04/12/1977
3993398	Device for reconstructing color holographic image A white light source is employed for illuminating a color image hologram have no effect of diffusion. The primary or first order diffraction light is directed to and focused on a spectrum selecting spatial filter for selecting the spectra which contribute...	11/23/1976
3985419	Method of making a synthetic focused image hologram A method of making a synthetic focused image hologram consisting of: A step to diffusely illuminate plural number of component pictures having different image informations with coherent beam, a step to image by an imaging optical system the images of the plura...	10/12/1976
3961836	Focused-image hologram system providing increased optical readout efficiency A focused-image hologram recorded in a thin phase medium having a high-frequency line spacing, such that the ratio of this line spacing to the wavelength of the readout light beam is greater than one but less than two, when read out with a light beam incl...	06/08/1976
3954322	Holographic Doppler-spread imaging of moving objects The Doppler frequency shift of coherent light reflected from moving objects is used to obtain resolution much greater than the classical limit for imaging systems. The Doppler information is processed by using the temporal and spatial filtering properties...	05/04/1976
3944322	Light filtering arrangement for holographic displays A holographic arrangement is provided with light filtering means for transmitting only those light rays to the hologram which are incident to the hologram at the prescribed angles required for substantial diffraction while at the same time operating to pr...	03/16/1976
3942861	Full view hologram A single flat sheet hologram is provided which when illuminated displays substantially a 360° view of an object space. This is done by recording both left and right hand views of the object space on the single sheet of sensitive material. A flat sheet ho...	03/09/1976
3936138	Method of reconstructing holograms using a reflected undiffracted beam as a reconstruction beam A plurality of holograms carrying equivalent information are arranged so that the undiffracted beam passing through the first hologram is used as a reconstructing beam to illuminate the second hologram, and the undiffracted beam of the second is used as a...	02/03/1976

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Class 359/31 - Focused image holography