| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | Near-to-Eye and See-Through Holographic Displays | US15658388 | 2017-07-24 | US20180074457A1 | 2018-03-15 | Sundeep Jolly; Nickolaos Savidis; V. Michael Bove, JR.; Bianca Datta; Daniel E. Smalley |
| A holographic display is comprised of space-multiplexed elemental modulators, each of which consists of a surface acoustic wave transducer atop an anisotropic waveguide. Each “line” of the overall display consists of a single anisotropic waveguide across the display's length with multiple surface acoustic wave transducers spaced along the waveguide length, although for larger displays, the waveguide may be divided into segments, each provided with separate illumination. Light that is undiffracted by a specific transducer is available for diffraction by subsequent transducers. Per transducer, guided-mode light is mode-converted to leaky-mode light, which propagates into the substrate away from the viewer before encountering a volume reflection grating and being reflected and steered towards the viewer. The display is transparent and all reflection volume gratings operate in the Bragg regime, thereby creating no dispersion of ambient light. | ||||||
| 182 | Apparatus and method for displaying transmission and reflection holograms | US14253733 | 2014-04-15 | US09804565B2 | 2017-10-31 | Ian Redmond |
| An apparatus and method for displaying holograms. A compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light. | ||||||
| 183 | Apparatus and method for displaying transmission and reflection holograms | US13142308 | 2009-12-31 | US09804564B2 | 2017-10-31 | Ian Redmond |
| An apparatus and method for displaying holograms. A compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light. | ||||||
| 184 | REDUCING ORDERS OF DIFFRACTION PATTERNS | US15257581 | 2016-09-06 | US20170248825A1 | 2017-08-31 | Andreas Georgiou; Joel S. Kollin |
| Examples are disclosed relating to reducing orders of diffraction patterns in phase modulating devices. An example phase modulating device includes a phase modulating layer having first and second opposing sides, a common electrode adjacent the first side of the phase modulating layer, a plurality of pixel electrodes adjacent the second side of the phase modulating layer, and blurring material disposed between the phase modulating layer and the pixel electrodes. In the example phase modulating device, the blurring material is configured to smooth phase transitions in the phase modulating layer between localized areas associated with the pixel electrodes, the pixel electrodes have a pixel pitch by which the pixel electrodes are distributed along the phase modulating layer, and the pixel electrodes are separated from one another by an inter-pixel gap, where the ratio of the inter-pixel gap to the pixel pitch is between 0.50 and 1.0. | ||||||
| 185 | FLOATING IMAGE DISPLAY DEVICE | US15411619 | 2017-01-20 | US20170227929A1 | 2017-08-10 | Hidetsugu SUGINOHARA |
| A floating image display device includes a floating-image-formation optical system that forms an image at an opening part as a floating image from an image displayed on an image display unit, an authentication unit that judges whether or not a subject passing through the opening part is an authorized subject, and an image control unit that makes the image display unit switch contents of the image when the subject is judged as the authorized subject. The floating-image-formation optical system can include a beam splitter and a retroreflective sheet. Another floating image display device includes an image display unit that displays a first image, a floating-image-formation optical system that forms an image at an opening part as a floating image from the first image, and an image projection unit that projects a second image onto a subject moving through the floating image when the subject passes through the opening part. | ||||||
| 186 | FLOATING IMAGE DISPLAY DEVICE | US15411333 | 2017-01-20 | US20170227928A1 | 2017-08-10 | Hidetsugu SUGINOHARA |
| A floating image display device includes an image display unit that displays a display image based on a first image signal, a floating-image-formation optical system that forms an image in air as a floating image from the display image, a guide image display unit that displays a guide image based on a second image signal nearby the floating image to be visually recognized on the same plane as the floating image as viewed from a viewer, and an image control unit that supplies the first image signal and the second image signal respectively to the image display unit and the guide image display unit. The image control unit supplies an image signal as the second image signal to the guide image display unit after the image signal undergoes at least one of a process of adding blurring, a process of lowering luminance and a process of lowering contrast. | ||||||
| 187 | HOLOGRAPHIC DISPLAY APPARATUS AND METHOD USING DIRECTIONAL BACKLIGHT UNIT (BLU) | US15381962 | 2016-12-16 | US20170176933A1 | 2017-06-22 | Hyun Eui KIM; Tae One KIM |
| A holographic display apparatus and method using a directional backlight unit (BLU) are provided. The holographic display apparatus may include a BLU configured to control light to be incident on a spatial light modulator (SLM) using a plurality of mirrors, and the SLM configured to modulate the incident light based on image information and to display a holographic image. | ||||||
| 188 | OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS, OPTICAL INFORMATION RECORDING/REPRODUCING METHOD | US15316411 | 2014-06-07 | US20170176931A1 | 2017-06-22 | Yuzuru Takashima; Kenichi SHIMADA |
| An optical information recording/reproducing apparatus and method thereof which compensate for the effect of mechanical instability on holographic data storage. A time dependent deviation profile of an optical beam during recording is determined. The time dependent deviation profile is related to a phase profile to be applied to a reference beam during recording or reproduction of a hologram, and the related phase profile is applied to the reference beam during recording or reproduction of the hologram. | ||||||
| 189 | 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. | ||||||
| 190 | Viewer tracking in a projection system | US13936262 | 2013-07-08 | US09541901B2 | 2017-01-10 | Carmel Rotschild; Aviad Kaufman |
| Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180° around an axis of revolution. | ||||||
| 191 | Projection device and method for holographic reconstruction of scenes | US14828973 | 2015-08-18 | US09513599B2 | 2016-12-06 | Armin Schwerdtner |
| A holographic reconstruction of scenes includes a light modulator, an imaging system with at least two imaging means and an illumination device with sufficient coherent light for illumination of hologram coded in the light modulator. The at least two imaging means are arranged such that a first imaging means is provided for the magnified imaging of the light modulator on a second imaging means. The second imaging means is provided for imaging of a plane of a spatial frequency spectrum of the light modulator in a viewing plane at least one viewing window. The viewing window corresponds to a diffraction order of the spatial frequency spectrum. | ||||||
| 192 | Apparatus and methods for holographic display | US13996557 | 2011-01-14 | US09501036B2 | 2016-11-22 | Hoonjong Kang; Fahri Yaras; Levent Onural |
| A holographic display and more particularly an apparatus and method for a curved electro-holographic display are disclosed. The apparatus mainly includes at least one light source for providing lights, at least one axially symmetric mirror for reflecting the lights coming from the light source, at least one spatial light modulation system having one or more than one spatial light modulators for modulating the lights reflecting from the axially symmetric mirror and forming a desired optical reconstruction above the axially symmetric mirror by reflecting the lights which is seen from a viewing zone by the user. | ||||||
| 193 | Projection device and method for holographic reconstruction of scenes | US11914278 | 2006-05-12 | US09116505B2 | 2015-08-25 | Armin Schwerdtner |
| A holographic reconstruction of scenes includes a light modulator, an imaging system with at least two imaging means and an illumination device with sufficient coherent light for illumination of hologram coded in the light modulator. The at least two imaging means are arranged such that a first imaging means is provided for the magnified imaging of the light modulator on a second imaging means. The second imaging means is provided for imaging of a plane of a spatial frequency spectrum of the light modulator in a viewing plane at least one viewing window. The viewing window corresponds to a diffraction order of the spatial frequency spectrum. | ||||||
| 194 | DIGITAL HOLOGRAPHIC DISPLAY METHOD AND APPARATUS | US14577146 | 2014-12-19 | US20150234350A1 | 2015-08-20 | Min Sik PARK; Hyun Eui KIM; Byung Gyu CHAE; Hyon Gon CHOO; Kyung Ae MOON; Jin Woong KIM |
| The present invention proposes a digital holographic display apparatus including a light generating unit configured to generate coherent light, a spatial light modulator configured to reproduce 3-dimensional hologram images on a space by modulating the coherent light, a vertical viewing angle magnifying unit configured to expand a vertical viewing angle by vertically steering a beam that forms the hologram images through a first mirror, a horizontal viewing angle magnifying unit configured to expand a horizontal viewing angle by steering the beam to top of a table through a second mirror, and a control unit configured to control the special light modulator, the vertical viewing angle magnifying unit and the horizontal viewing angle magnifying unit in order the hologram images to be formed on an observation space for hologram. Accordingly, by expanding the horizontal and vertical viewing angles of hologram images, an observer may observe the hologram images more comfortably. | ||||||
| 195 | OASLM-BASED HOLOGRAPHIC DISPLAY | US14294756 | 2014-06-03 | US20140375763A1 | 2014-12-25 | Hong-seok LEE; Hoon SONG; Kang-hee WON; Neil COLLINGS; Daping CHU |
| Provided is an optically addressable spatial light modulator (OASLM)-based holographic display and a method of operating the same. The display includes an addressing unit including a light source unit emitting a plurality of recording beams, a driving mirror array including driving mirrors that each reflect a recording beam incident thereon, and a mirror member array including mirror members that each obliquely reflect a recording beam incident thereon, in which each of the driving mirrors corresponds to one of the mirror members. The recording beams, which are transmitted by the addressing unit, are focused onto the OASLM by micro lenses of a lenslet array. The OASLM is optically addressed by the recording beams focused by the micro lenses of the lenslet array and thus modulates and diffracts a reproduction beam, incident thereon from a reproduction beam providing unit, and thus a holographic image is reproduced. | ||||||
| 196 | HOLOGRAPHIC 3D IMAGE DISPLAY APPARATUS AND ILLUMINATION UNIT FOR THE SAME | US14180414 | 2014-02-14 | US20140285862A1 | 2014-09-25 | Hoon SONG; Gee-young SUNG; Kang-hee WON; Hong-seok LEE |
| An illumination unit is provided including a coherent light source; a projection optical element which focuses a light beam emitted from the coherent light source onto a focal plane; and a holographic optical element interposed between the coherent light source and the projection optical element, and having an interference pattern formed thereon. The holographic optical element diffracts the light beam emitted from the coherent light source and emits the diffracted light to the projection optical element. Here, the interference pattern on the holographic optical element may have information that diffracts the light beam and thereby cancels a diffraction of the light beam due to an aberration of the projection optical element. | ||||||
| 197 | MAN MACHINE INTERFACE FOR A 3D DISPLAY SYSTEM | US14040749 | 2013-09-30 | US20140033052A1 | 2014-01-30 | Aviad KAUFMAN; Carmel ROTSCHILD |
| Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180° around an axis of revolution. | ||||||
| 198 | Device for producing a high-resolution reflection hologram | US12599620 | 2008-05-13 | US08405893B2 | 2013-03-26 | Peter Bauernschmid; Gerhard Hochenbleicher |
| A device for producing a reflection hologram by means of a master, which is formed by a substrate on which a saw-toothed shaped structure is formed by molding, mechanical or lithographical methods. The structure has a reflective finish, such that the desired surface is produced on the structure. The light of a laser light source is expanded by means of an optical device, thus enabling a beam having a predetermined beam width to be obtained. The beam radiates the master and is reflected by the structure at an angle α in relation to the incident beam. Above the smooth surface arranged over the structure a photopolymer-film, containing a photo-sensitive layer that is disposed at a distance in relation to the structure, is arranged and the reflection hologram is produced in the photo-sensitive layer. | ||||||
| 199 | HEAD UP DISPLAYS | US13389436 | 2010-07-22 | US20120224062A1 | 2012-09-06 | Lilian Lacoste; Dominik Stindt; Edward Buckley |
| We describe a road vehicle contact-analogue head up display (HUD) comprising: a laser-based virtual image generation system to provide a 2D virtual image; exit pupil expander optics to enlarge an eye box of the HUD; a system for sensing a lateral road position relative to the road vehicle and a vehicle pitch or horizon position; a symbol image generation system to generate symbology for the HUD; and an imagery processor coupled to the symbol image generation system, to the sensor system and to said virtual image generation system, to receive and process symbology image data to convert this to data defining a 2D image for display dependent on the sensed road position such that when viewed the virtual image appears to be at a substantially fixed position relative to said road; and wherein the virtual image is at a distance of at least 5 m from said viewer. | ||||||
| 200 | Hologram medium manufacturing method, master hologram medium manufacturing method, recording medium, and hologram medium manufacturing apparatus | US12328226 | 2008-12-04 | US08238005B2 | 2012-08-07 | Hisayuki Yamatsu; Kunihiko Hayashi; Norihiro Tanabe |
| A hologram medium manufacturing method that includes disposing a first pair of master hologram media with a predetermined interval so that the first pair of the master hologram media face each other; forming a master hologram in the master hologram media by irradiating the first pair of the master hologram media with spherical wave light and reference light so that the spherical wave light and the reference light interfere with each other in the master hologram media. The spherical wave light and the reference light have a focal point between the first pair of the master hologram media. The method also includes disposing a hologram medium between the first pair of the master hologram media; and forming a hologram in the hologram medium by irradiating the first pair of the master hologram media with the reference light. | ||||||
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