| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Method and apparatus for creating a holographic stereogram | EP97401487.0 | 1997-06-26 | EP0816952A2 | 1998-01-07 | Kihara, Nobuhiro; Shirakura, Akira; Baba, Shigeyuki |
A method and an apparatus for creating a holographic stereogram are provided for offering an optically equivalent effect to that obtained by locating a mask on a hologram recording medium, without having to locate the mask on the hologram recording medium, and thereby realizing a high-quality hologram without having to complicate the area around the hologram recording medium. The creating method is executed to display an image at a co-ordinate location of the hologram recording medium (30) on a display unit (41), condense a laser beam transmitted through the display unit on the co-ordinate location of the hologram recording medium as an object beam and apply part of the laser beam before transmission through the display means onto the hologram recording medium as a reference beam, and sequentially form the stripped or dotted holographic elements on the hologram recording medium. In this method, a diffuser panel (42) is located close to the display unit for diffusing the beam. A mask (43) having an opening (43a) is located downstream of the display unit and the diffuser panel. The opening corresponds to each holographic element. The object beam is condensed and then is transmitted through the mask (43). Then, the transmitted beam is re-condensed through an optical system (45, 46) and is applied onto the hologram recording medium. |
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| 82 | APPARATUS FOR RECONSTRUCTING HOLOGRAPHIC IMAGES | EP95903165.0 | 1994-11-28 | EP0746802A1 | 1996-12-11 | HART, Stephen, J.; MAILAND, Ken |
| An apparatus for reconstructing holographic images includes a white light source, diffraction grating (1112) for generating zero-order diffracted light (1416) and at least first-order diffracted light, and light control film (LCF 1810) which is configured to block the zero-order diffracted light and to facilitate passage of a desired bandwidth of first-order diffracted light therethrough. In one embodiment light control film (LCF 1810) comprises a front layer (1802), a core layer (1804), and a back layer (1806). The back layer (1806) may be thought of as a datum, whereby a lateral shift in front film (1802) results in wavelength selectively, and a corresponding shift in core layer (1804) results in good zero-order light blocking. The resulting light is a pseudo-monochromatic source having sufficient coherence for use as a hologram reconstruction beam. | ||||||
| 83 | Projection apparatus for holographic stereogram recording | EP93308122.6 | 1993-10-12 | EP0593265A1 | 1994-04-20 | Farmer, William J. |
A projection apparatus for holographic stereogram recording has a transmissive liquid crystal device (11) and a diffusion screen (13). The transmissive liquid crystal device (11) has a microlens array (14) on its incident side and a polarizing sheet (12) on its transmitting side. The microlenses are in one to one correspondence with the pixels of the liquid crystal device (11). The position of the diffusion screen (13) is chosen such that the image transmitted to it from the liquid crystal device appears continuous. |
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| 84 | SCANNER DEVICE AND DEVICE FOR MEASURING THREE-DIMENSIONAL SHAPE OF OBJECT | US16021969 | 2018-06-28 | US20180309961A1 | 2018-10-25 | Makio KURASHIGE; Kazutoshi Ishida; Tomoe Takanokura; Yasuyuki Oyagi |
| A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured. | ||||||
| 85 | Scanner device and device for measuring three-dimensional shape of object | US14799038 | 2015-07-14 | US10051243B2 | 2018-08-14 | Makio Kurashige; Kazutoshi Ishida; Tomoe Takanokura; Yasuyuki Oyagi |
| A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured. | ||||||
| 86 | INCOHERENT LIGHT TREATMENT | US15817122 | 2017-11-17 | US20180136606A1 | 2018-05-17 | Friso Schlottau; Adam Urness; Mark R. Ayres; Suchit Madan; Thomas Riley Morris; Fredric R. Askham |
| A system and method of performing incoherent light treatment is disclosed. The method may include securing a recording medium to a securing structure within an internal cavity and delivering light at least partially toward a baffle disposed within the internal cavity. The method may also include securing one or more diffusers to one or more surfaces of the recording medium. | ||||||
| 87 | Holographic 3D recording device, reproducing device and display apparatus | US15122307 | 2015-08-28 | US09964924B2 | 2018-05-08 | Yingli Meng |
| A holographic 3D recording device includes: a photorefractive crystal and a microlens array. The microlens array includes an array face and a side face. The microlens array is provided in a light path from an object to be photographed to the photorefractive crystal such that first light of object emitted through a diffuse reflection of the object to be photographed passes through the array face of the microlens array and becomes second light of object that is emitted to the photorefractive crystal. The photorefractive crystal is configured to receive the second light of object emitted by the microlens array and reference light, respectively, and save therein an interference fringe formed by the reference light and the second light of object. The first light of object and the reference light are coherent light. | ||||||
| 88 | Holographic 3D Recording Device, Reproducing Device and Display Apparatus | US15122307 | 2015-08-28 | US20170075303A1 | 2017-03-16 | Yingli Meng |
| A holographic 3D recording device includes: a photorefractive crystal and a microlens array. The microlens array includes an array face and a side face. The microlens array is provided in a light path from an object to be photographed to the photorefractive crystal such that first light of object emitted through a diffuse reflection of the object to be photographed passes through the array face of the microlens array and becomes second light of object that is emitted to the photorefractive crystal. The photorefractive crystal is configured to receive the second light of object emitted by the microlens array and reference light, respectively, and save therein an interference fringe formed by the reference light and the second light of object. The first light of object and the reference light are coherent light. | ||||||
| 89 | HOLOGRAPHIC-STEREOGRAM-FORMING APPARATUS, DIFFUSING MEMBER, AND HOLOGRAPHIC-STEREOGRAM-FORMING METHOD | US15007799 | 2016-01-27 | US20170038729A1 | 2017-02-09 | Yasuhiro OGASAWARA; Jiro MINABE; Shigetoshi NAKAMURA; Takashi KIKUCHI; Masahiro IGUSA; Motohiko SAKAMAKI |
| A holographic-stereogram-forming apparatus includes a laser beam source that generates a laser beam to be split into an object beam and a reference beam; a display that displays an original image corresponding to a substantially strip-shaped holographic element constituting a holographic stereogram containing parallax information in a horizontal direction; a diffusing unit provided on a light-emission side of the display and including optical elements having different thicknesses in a direction of light transmission, the optical elements being arranged in a matrix and each having a substantially rectangular shape with a vertical length being shorter than a horizontal length, the diffusing unit diffusing object beam more widely in the vertical direction than in the horizontal direction, the object beam to be diffused by the diffusing unit being generated by the display; and a condensing unit that condenses the object beam diffused by the diffusing unit on a hologram recording medium. | ||||||
| 90 | Apparatus and method for forming 3-dimensional holographic image using scattering layer | US14453448 | 2014-08-06 | US09354605B2 | 2016-05-31 | YongKeun Park; Hyeon Seung Yu |
| A method for forming a three-dimensional holographic image includes identifying a transmission matrix of a scattering material, calculating an incident wave-front corresponding to wave-front information for forming a three-dimensional holographic image, using the identified transmission matrix, and forming the calculated incident wave-front by controlling a wave-front control to modulate a light projected from a light source and forming a three-dimensional holographic image. | ||||||
| 91 | SCANNER DEVICE AND DEVICE FOR MEASURING THREE-DIMENSIONAL SHAPE OF OBJECT | US14799038 | 2015-07-14 | US20150316892A1 | 2015-11-05 | Makio KURASHIGE; Kazutoshi Ishida; Tomoe Takanokura; Yasuyuki Oyagi |
| A laser beam (L50) is reflected by a light beam scanning device (60) and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device (60) bends the laser beam (L50) at the scanning origin (B) and irradiates the laser beam onto the hologram recording medium (45). At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam (L60) on the hologram recording medium (45) is changed with time. Diffracted light (L45) from the hologram recording medium (45) produces a reproduction image (35) of the linear scatter body on a light receiving surface (R) of the stage 210. When an object is placed on the light receiving surface (R), a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured. | ||||||
| 92 | Apparatus and Method for Forming 3-Dimensional Holographic Image Using Scattering Layer | US14453448 | 2014-08-06 | US20150241843A1 | 2015-08-27 | Yongkeun Park; Hyeon Seung Yu |
| A method for forming a three-dimensional holographic image includes identifying a transmission matrix of a scattering material, calculating an incident wave-front corresponding to wave-front information for forming a three-dimensional holographic image, using the identified transmission matrix, and forming the calculated incident wave-front by controlling a wave-front control to modulate a light projected from a light source and forming a three-dimensional holographic image. | ||||||
| 93 | Scanner device and device for measuring three-dimensional shape of object | US13702027 | 2010-09-07 | US09116504B2 | 2015-08-25 | Makio Kurashige; Kazutoshi Ishida; Tomoe Takanokura; Yasuyuki Oyagi |
| A laser beam is reflected by a light beam scanning device and irradiated onto a hologram recording medium. On the hologram recording medium, an image of a linear scatter body is recorded as a hologram by using reference light that converges on a scanning origin. The light beam scanning device bends the laser beam at the scanning origin and irradiates the laser beam onto the hologram recording medium. At this time, by changing a bending mode of the laser beam with time, an irradiation position of the bent laser beam on the hologram recording medium is changed with time. Diffracted light from the hologram recording medium produces a reproduction image of the linear scatter body on a light receiving surface of the stage. When an object is placed on the light receiving surface, a line pattern is projected by hologram reproduction light, so that the projected image is captured and a three-dimensional shape of the object is measured. | ||||||
| 94 | INTERFEROMETRIC SPATIAL LIGHT MODULATOR FOR PRODUCTION OF DIGITAL HOLOGRAMS | US14368828 | 2012-12-21 | US20150098066A1 | 2015-04-09 | David Jurbergs |
| A digital holographic apparatus, system, and method are disclosed. The apparatus includes an electronic display device comprising an interferometric spatial light modulator based display engine and a processor coupled to the electronic display device. The processor is operative to upload digital content to the electronic display device. The digital content is displayed on the electronic display device and is recorded into a holographic medium when the holographic medium and the electronic display device are flood exposed by a laser generated light beam. The system additionally includes at least one laser coupled optically coupled to the electronic display device and communicatively coupled to the processor. A method of recording a digital hologram in a holographic medium using the digital holographic system also is disclosed. | ||||||
| 95 | Digital hologram image display device | US13152146 | 2011-06-02 | US08817068B2 | 2014-08-26 | Minsung Yoon; Guensik Lee |
| The present disclosure relates to a digital hologram display device in which the 0th diffraction component is removed for optimizing the reproduction and replay of three-dimensional hologram video data. The present disclosure suggests a digital hologram image display device including a pattern generator generating holography interference patterns; a spatial light modulator receiving the holography interference patterns from the pattern generator and representing the holography interference patterns; a light source positioning at one side of the spatial light modulator and illuminating a reference beam to the spatial light modulator; an optical device controlling the reference beam to be collimated onto the entire surface of the spatial light modulator; and a diffusion sheet disposed between the light source and the spatial light modulator. | ||||||
| 96 | System and Method for Autostereoscopic Imaging | US12883348 | 2010-09-16 | US20110032587A1 | 2011-02-10 | Hans Ingmar Bjelkhagen; Mark L. Dell'Eva |
| Systems and methods for autostereoscopic display of three-dimensional images include a holographic optical element made by preparing a silver halide gelatin emulsion, coating one side of a glass substrate with the emulsion, holographically recording an eyebox on the coated glass substrate using at least three wavelengths of coherent light combined in a source beam that is divided into a reference beam and object beam with at least one of the reference and object beam passing through a beam shaping device to substantially uniformly illuminate the glass substrate from opposite sides, processing the coated glass substrate, and sealing the coated glass substrate by covering the coated side of the glass substrate with an optical cement and securing to a black glass plate. The element may be mounted in a display and illuminated with at least one projector having optical keystone correction with source wavelengths aligned or matched with the recording wavelengths. | ||||||
| 97 | Three-dimensional hologram process with overt anti-counterfeit security using first object light, second object light, and reference light | US11483562 | 2006-07-11 | US07538919B2 | 2009-05-26 | Tsuyoshi Yamauchi; Masachika Watanabe; Tomoko Kumasawa |
| The invention relates to a security-conscious hologram which can apply a sufficient three-dimensional appearance to a reconstructed image in both its vertical and horizontal directions, and which is difficult to illegally copy and easily told from any illegal copy forged from it, and a holographic process of recording it. The hologram H2 is of a combined reflection and volume type, wherein a subject image P is recorded, and minute reflection images F and O′ from a light source are recorded at least in front of, or in the rear of, the subject image P, both in a reconstructible fashion, and a viewing position E is moved along a hologram surface, so that the subject image P and the minute reflection images F and O′ are viewable at varied relative positions. | ||||||
| 98 | Method and apparatus for illuminating a computer generated hologram | US10488543 | 2002-08-22 | US07379219B2 | 2008-05-27 | Douglas Payne |
| A holographic display comprising a spatial light modulator, SLM, for displaying a computer generated hologram, CGH, containing horizontal or vertical parallax only, HPO, means for illuminating the SLM, and means for guiding light reflected from the SLM to a display region, the means for illuminating the SLM comprising a vertically/horizontally oriented line light source. | ||||||
| 99 | Method of Recording a Hologram | US11628683 | 2006-05-09 | US20080030820A1 | 2008-02-07 | Satyamoorthy Kabilan; Christopher Creasey |
| A method of recording a master hologram comprises projecting a beam of coherent light, e.g. using a laser (1) through, in turn, a holographic recording medium (8) and a transparent object (22), into a diffuse reflective surface (23), wherein the object is non-holographic and wherein the medium, the object and the surface are in substantially linear arrangement such that light reflected by the surface interferes in the medium with light projected therethrough. | ||||||
| 100 | Biometric Hologram Based Data Verification Methods And Apparatus | US10574205 | 2004-10-01 | US20070206248A1 | 2007-09-06 | David Winterbottom; John Wiltshire; Ben Bowmaker |
| This invention generally relates to methods and apparatus for verifying data, and more particularly to holographic data carriers and apparatus for creating such data carriers, and to methods of verifying data stored on holographic data carriers. A data carrier comprising: a hologram storing data to reproduce an image of a portion of a human body characteristic of an individual; and a second data bearing device; and wherein data stored by said second data bearing device is verifiable using data stored in said hologram. | ||||||
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