| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Pulsed-laser systems and methods for producing holographic stereograms | US10881889 | 2004-06-30 | US20040240015A1 | 2004-12-02 | Craig Newswanger; Pankaj Lad; Robert L. Sitton; Qiang Huang; Michael A. Klug; Mark E. Holzbach |
| Pre-sensitization techniques can be used in conjunction with holographic recording materials to allow high quality holographic stereograms to be recorded in those holographic recording materials using pulsed lasers. Additional hologram production system hardware and software designs for use with pulsed lasers are disclosed. | ||||||
| 42 | Pulsed-laser systems and methods for producing holographic stereograms | US10167759 | 2002-06-12 | US06806982B2 | 2004-10-19 | Craig Newswanger; Pankaj Lad; Robert L. Sitton; Qiang Huang; Michael A. Klug; Mark E. Holzbach |
| Pre-sensitization techniques can be used in conjunction with holographic recording materials to allow high quality holographic stereograms to be recorded in those holographic recording materials using pulsed lasers. Additional hologram production system hardware and software designs for use with pulsed lasers are disclosed. | ||||||
| 43 | Spinning disc volume holographic memory | US226069 | 1998-01-06 | US5966361A | 1999-10-12 | Harold M. Stoll |
| A volume holographic memory has a spinning disk comprised of photorefractive medium, object beam optics configured to direct an object beam through the outer edge of the disk, and reference beam optics configured to simultaneously direct a reference beam through the outer edge of the disk. An angle multiplexer manipulates the reference beam to facilitate the formation of angle multiplexed volume holograms. The object beam and the reference beam cooperate within the photorefractive medium to sequentially form a plurality of sets of angle multiplexed volume holograms therein while the disk is spinning. A phase conjugator directs a conjugate reference beam back through the disk after the reference beam has previously passed therethrough, so as to form a conjugate object beam to facilitate read-out. Amplitude monitoring is provided to facilitate use of an exposure schedule. Path length monitoring assures consistent phase relationship between the object and reference beams for write and erase operations. Calibration of the angle multiplexer is provided. | ||||||
| 44 | Holographic LIDAR System | US16265667 | 2019-02-01 | US20190163125A1 | 2019-05-30 | Jamieson Christmas; Dackson Masiyano; Mikael Collin |
| There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. | ||||||
| 45 | METHOD AND DEVICE FOR EXPOSING AT LEAST ONE SECTIONAL FACE INSIDE A LIGHT SCATTERING OBJECT | US15752125 | 2016-08-09 | US20180235461A1 | 2018-08-23 | Peter KOCH; Gesa FRANKE; Hendrik SPAHR; Helge SUDKAMP; Gereon HÜTTMANN; Dierck HILLMANN; Reginald BIRNGRUBER |
| The invention relates to an interferometric method, in which the light scattered by an object is imaged onto an electronic camera, wherein a sample light component is assigned to scattering sites on a sectional face in the interior of the object. This sample light component can he separated from the contributions of the other sample light components by processing of the camera image and leads to a sectional image. A particular advantage of the invention lies in the fact that multiple parallel sectional faces can be exposed sequentially at predetermined intervals from each other in the interior of the object. Such a sequence of sectional images can be used to calculate a solid model of the object.The invention is applicable in particular to the live retina and allows a three-dimensional retina scan within a few seconds with a cost-effective and, if necessary, hand-held device.Application options are in the fields of ophthalmology and in biometry. | ||||||
| 46 | Lighting device for headlights with a phase modulator | US14376974 | 2013-02-06 | US09829858B2 | 2017-11-28 | Jamieson Christmas; Dackson Masiyano; Mikael Collin |
| There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. | ||||||
| 47 | LIGHTING DEVICE FOR HEADLIGHTS WITH A PHASE MODULATOR | US15372312 | 2016-12-07 | US20170082974A1 | 2017-03-23 | Jamieson Christmas |
| There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. | ||||||
| 48 | Lighting Device for Headlights with a Phase Modulator | US14376974 | 2013-02-06 | US20150009695A1 | 2015-01-08 | Jamieson Christmas; Dackson Masiyano; Mikael Collin |
| There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam. | ||||||
| 49 | APPARATUS FOR THE EXACT RECONSTRUCTION OF THE OBJECT WAVE IN OFF-AXIS DIGITAL HOLOGRAPHY | US13341178 | 2011-12-30 | US20130057935A1 | 2013-03-07 | Ki-Nam JOO |
| A method for preparing a digital hologram representing an image of an object, which includes generating a measurement beam and a first reference beam, irradiating the object by the measurement beam and guiding the measurement beam reflected to an optical sensor. The method also includes guiding the first reference beam to a first mirror, extending under an angle different from 90° with the optical axis of the first reference beam, and guiding the reflected beam to the optical sensor so that both beams generate an interference pattern on the sensor. The method further includes reading out the sensor and providing a digital signal representing the interference pattern on the optical sensor, and processing the signal to obtain a digital hologram. | ||||||
| 50 | Method of nonlinear harmonic holography | US11944068 | 2007-11-21 | US07813016B2 | 2010-10-12 | Ye Pu; Demetri Psaltis |
| A harmonic holography (H2) technique and system that combines holography and nonlinear optics that enables holographic recording of 3D images with femtosecond framing time are provided. The H2 technique records holograms with second harmonic (SH) signals scattered off specialized nanocrystals that are functionalized to label specific protein or other biomolecules in a living organism. The capability of generating second harmonic radiations is specific to materials with noncentrosymmetric crystalline structures only, and χ(2) vanishes for all other types of materials. Therefore, a sharp contrast is formed when particles of noncentrosymmetric structures are dispersed in a medium of other species, pumped at a fundamental frequency, and imaged at the second harmonic frequency. The new scheme described herein provides a sound basis for a new type of contrast microscopy with enormous potential in molecular biomedical imaging. | ||||||
| 51 | HOLOGRAPHIC PRINTER | US12298658 | 2007-04-27 | US20100067076A1 | 2010-03-18 | David Brotherton-Ratcliffe |
| A holographic printer, a hologram copier and a combined holographic printer and hologram copier system is disclosed. The printer, copier and combined system comprise a pulsed RGB laser system comprising three short cavity oscillators. With the holographic printer digital image data is encoded onto three LCOS reflective SLM displays. The combined holographic printer and hologram copier system comprises a single RGB laser system. | ||||||
| 52 | Pulsed-laser systems and methods for producing holographic stereograms | US11301528 | 2005-12-13 | US20060098260A1 | 2006-05-11 | Craig Newswanger; Pankaj Lad; Robert Sitton; Qiang Huang; Michael Klug; Mark Holzbach |
| Pre-sensitization techniques can be used in conjunction with holographic recording materials to allow high quality holographic stereograms to be recorded in those holographic recording materials using pulsed lasers. Additional hologram production system hardware and software designs for use with pulsed lasers are disclosed. | ||||||
| 53 | Spinning disc volume holographic memory | US09373939 | 1999-08-13 | US06418106B1 | 2002-07-09 | Harold M. Stoll |
| A volume holographic memory has a spinning disk comprised of photorefractive medium, object beam optics configured to direct an object beam through the outer edge of the disk, and reference beam optics configured to simultaneously direct a reference beam through the outer edge of the disk. An angle multiplexer manipulates the reference beam to facilitate the formation of angle multiplexed volume holograms. The object beam and the reference beam cooperate within the photorefractive medium to sequentially form a plurality of sets of angle multiplexed volume holograms therein while the disk is spinning. A phase conjugator directs a conjugate reference beam back through the disk after the reference beam has previously passed therethrough, so as to form a conjugate object beam to facilitate read-out. Amplitude monitoring is provided to facilitate use of an exposure schedule. Path length monitoring assures consistent phase relationship between the object and reference beams for write and erase operations. Calibration of the angle multiplexer is provided. | ||||||
| 54 | Holographic imaging | US284616 | 1994-09-06 | US5796498A | 1998-08-18 | Paul Michael William French |
| A holographic imaging apparatus having a pulsed laser light source for generating an object beam and a reference beam whereby an object, obscured by a diffusing medium, is illuminated by the object beam. A real time interferogram recording medium is exposed to the coincidence of light reflected from the object and the reference beam to record an interferogram. A holographic image is then reconstructed from the interferogram and may be viewed and recorded. The pulsed laser light source generates a beam which is divided by a conventional beam splitter device into an object beam and a reference beam. The object beam is then diverged by a lens which forms a diverging object beam to illuminate the object. The reference beam is diverged through another lens to form a diverging reference beam which is directed so that it illuminates a photoreactive crystal. The coincidence of the reflected light and diverging reference beam generates a pattern of interference fringes known as an interferogram which is recorded by the crystal. The apparatus can use time-gating in the holographic medium to use ballistic and snake-like light, which arrives before scattered light, to construct a holographic image. The apparatus can also obtain depth information for 3-D images by using the time-gating technique to obtain the image bearing light from a 3-D object. The apparatus also may record light-in-flight images of the object, to record different depths of the object separately, by using an optical delay assembly. | ||||||
| 55 | Method and apparatus for making hologram | US971557 | 1992-11-05 | US5291321A | 1994-03-01 | Sung W. Noh |
| 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 hologram on a portion of the hologram plate, producing a monitoring beam based on a laser beam, splitting the laser and monitoring beams into two beams, respectively, producing object, reference, monitoring object and monitoring reference beams, allowing the monitoring object and reference beams to be incident on the monitoring hologram to form monitoring interference patterns, sensing an intensity of the monitoring interference patterns, comparing the sensed intensity with a reference intensity, if the intensity is varied exceeding a tolerance limit of the intensity variation, blocking the laser beam and allowing the monitoring object beam and the monitoring reference beam to be incident on the monitoring hologram, if not so, allowing the object beam and the reference beam to be incident on the hologram plate, and performing repeatedly the sensing and comparing steps so that the object beam and the reference beam are incident on the hologram plate only for a predetermined time period to record the hologram based on an interference phenomenon thereof. | ||||||
| 56 | Method and apparatus for imaging an object in or through a scattering medium by using multiple-wave mixing | US983334 | 1992-11-30 | US5270853A | 1993-12-14 | Mark Bashkansky; John F. Reintjes |
| A method and apparatus for imaging an object that is part of, embedded in, or viewed through a scattering medium is provided. A broadband stochastic beam generator, such as a broadband laser, generates a broadband stochastic beam and a narrowband beam generator generates a narrowband beam. A non-linear mixing crystal receives the broadband stochastic beam and the narrowband beam and provides a signal light beam conjugate correlated with the broadband stochastic beam to the scattering medium. A multiple-wave mixing cell is disposed to receive the signal light beam from the scattering medium. An adjustable delay path also illuminates the multiple-wave mixing cell with the broadband stochastic beam. A supplemental beam generator is also provided for also additionally illuminating the multiple-wave mixing cell with a supplemental beam having characteristics sufficient to satisfy phase matching with the material of the multiple-wave mixing cell. The multiple-wave mixing cell produces an image-bearing beam which contains an image of an object extracted from the signal light beam emitted from the scattering medium. The apparatus can further include a detector to record the image of the object in the image-bearing beam. | ||||||
| 57 | PROCEDE ET DISPOSITIF DESTINES A L'OBTENTION PAR MICROSCOPIE D'IMAGES EN TROIS DIMENSIONS D'UN ECHANTILLON | EP02742556.0 | 2002-07-01 | EP1399730B1 | 2012-09-05 | DUBOIS, Frank; YOURASSOWSKY, Catherine |
| 58 | METHOD FOR PRODUCING HOLOGRAM BY PICO-SECOND LASER | EP03705133 | 2003-02-13 | EP1475678A4 | 2008-09-24 | HOSONO HIDEO; HIRANO MASAHIRO; KAWAMURA KENICHI; MIURA TAISUKE; KAMIOKA HAYATO |
| When a hologram is irreversibly recorded in a non-photsensitive material by using an interfered femtosecond laser, there occurs a problem that a waveform of pulse laser is distorted by the non-linear optical interaction between the femtosecond laser pulse, the air, and the material, which disables stable recording of embedded hologram. A method for producing a hologram by a two-beam laser interference exposure method uses as a light source a solid laser emitting coherent laser beam with the pulse width (τ) satisfying the relationship: 900 femtosecond < τ ≤ 100 picosecond, and the laser power not smaller than 10 μJ/pulse. The pulse beam from the laser is split into two beams. The two beams are controlled temporally and spatially and focused on the surface or inside of a base material for recording hologram. Focusing spots of the two beams are matched temporally and spatially with each other, and either the surface relief type hologram is irreversibly recorded on the surface of the base material, or the embedded hologram is irreversibly recorded inside the base material. | ||||||
| 59 | PULSED-LASER SYSTEMS AND METHODS FOR PRODUCING HOLOGRAPHIC STEREOGRAMS | EP02794056.8 | 2002-11-26 | EP1449036A2 | 2004-08-25 | NEWSWANGER, Craig; LAD, Pankaj; SITTON, Robert, L.; HUANG, Qiang; KLUG, Michael, A.; HOLZBACH, Mark, E. |
| Pre-sensitization techniques can be used in conjunction with holographic recording materials to allow high quality holographic stereograms to be recorded in those holographic recording materials using pulsed lasers. Additional hologram production system hardware and software designs for use with pulsed lasers are disclosed. | ||||||
| 60 | HOLOGRAPHIC IMAGING | EP93904200.8 | 1993-02-15 | EP0626079B1 | 2000-09-20 | FRENCH, Paul Michael William |
| An apparatus for holographic imaging consists of a pulsed laser beam source (1) and an optical assembly which splits the beam into an object beam (3, 3') and a reference beam (4, 4'). The object beam (3') is directed to illuminate an object and the reference beam (4') is directed onto a photorefractive crystal (8). The photorefractive crystal (8) and the object (7) are located so that light reflected from the object forms an interferogram in a plane in which the crystal (8) is located. A CCD camera (9) is disposed to view the crystal (8) and thus to transform the interferogram which is temporarily recorded on the crystal (8) into electrical signals which can then be recorded for subsequent processing in the electronic memory of a data processing system (11). The camera (9) and crystal (8) can be mounted on a carriage (10) so that the crystal (8) can be scanned through the interferogram and the elements of an interferogram larger than the crystal (8) recorded electronically as a sequence of frames. | ||||||
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