| 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 | Display device and operating method thereof | US13961929 | 2013-08-08 | US09733617B2 | 2017-08-15 | Woojae Park; Dowoo Kwon; Wonseok Moon |
| A display device according to embodiments of the present disclosure includes a determination unit to determine a display mode, a light generator to selectively irradiate a 2D light or a hologram 3D light, a spatial light modulator to selectively display a 2D image or a hologram 3D image, and a control unit that controls the light generator to selectively irradiate the 2D light or the hologram 3D light and controls the spatial light modulator to modulate the 2D light or the hologram 3D light irradiated from the light generator to display the 2D image or the hologram 3D image according to the display mode determined by the determination unit. | ||||||
| 182 | BEAM DIVERGENCE AND VARIOUS COLLIMATORS FOR HOLOGRAPHIC OR STEREOSCOPIC DISPLAYS | US15191596 | 2016-06-24 | US20160313695A1 | 2016-10-27 | Gerald FUTTERER |
| A holographic display with an illumination device, an enlarging unit and a light modulator. The illumination device includes at least one light source and a light collimation unit, the light collimation unit collimates the light of the at least one light source and generates a light wave field of the light that is emitted by the light source with a specifiable angular spectrum of plane waves, the enlarging unit is disposed downstream of the light collimation unit, seen in the direction of light propagation, where the enlarging unit includes a transmissive volume hologram realising an anamorphic broadening of the light wave field due to a transmissive interaction of the light wave field with the volume hologram, and the light modulator is disposed upstream or downstream of the anamorphic enlarging unit, seen in the direction of light propagation. | ||||||
| 183 | DIGITAL HOLOGRAPHY THREE-DIMENSIONAL IMAGING APPARATUS AND DIGITAL HOLOGRAPHY THREE-DIMENSIONAL IMAGING METHOD | US14567436 | 2014-12-11 | US20150176966A1 | 2015-06-25 | Akira EGUCHI |
| The imaging apparatus includes an optical system dividing light into object and reference beams and causing the object beam and the reference beam to interfere with each other to form interference fringes on an image sensor. A processor performs multiple imaging processes for the interference fringes with different incident angles of the object beam to an object, a first process to acquire a transmitted wavefront for each incident angle and a second process to calculate a three-dimensional refractive index distribution from the transmitted wavefronts. The apparatus includes a modulator changing a phase distribution of light in any one of an optical path from a light source to a dividing element, a reference beam path and an optical path from a combining element to the image sensor and causes the modulator to change the phase distribution in at least one of the multiple imaging processes. | ||||||
| 184 | Projection type image display device | US14113086 | 2012-04-20 | US09013641B2 | 2015-04-21 | Makio Kurashige |
| To effectively suppress speckle noise generated when coherent light is used as a light source in a projection type image display device using an LCOS Liquid Crystal On Silicon). A projection type image display device according to the present invention includes: a light source that emits coherent light; an optical scanning section that scans the coherent light emitted from the light source; an LCOS that has an image formation area in which an image is formed; a projection optical system that projects an image formed on the image formation area on a screen; and a hologram that has polarization selectivity and diffuses scanning light scanned by the optical scanning section so as to allow diffusion light emitted from respective points thereof to illuminate the image formation area in an overlapping manner. | ||||||
| 185 | Security holograms | US12599403 | 2008-05-07 | US08503052B2 | 2013-08-06 | Patrick Flynn; John David Wiltshire |
| We describe techniques for recording a holographic image onto holographic recording film, in particular for security holograms. We thus describe a structure having a stack comprising the holographic recording film and a multichannel image generation device under the film. A three-dimensional object (or hologram of a 3D object) is provided, located under the multichannel image generation device. At least a portion of the multichannel image generation device is substantially transparent or absent in a region above the object. A holographic image is recorded in the film by illuminating the stack with laser light. The multichannel image generation device under the film may comprise a volume reflection hologram of a lenticularly generated image. The structure records a hologram of the 3D object in conjunction with a multi-channel holographic image. | ||||||
| 186 | Light modulating device | US12738704 | 2008-10-20 | US08427725B2 | 2013-04-23 | Gerald Futterer; Bo Kroll; Steffen Buschbeck |
| The present invention relates to a light modulating device, comprising a SLM and a pixelated optical element, in which a group of at least two adjacent pixels of the SLM in combination with a corresponding group of pixels in the pixelated optical element form a macropixel, the pixelated optical element being of a type such that its pixels comprise a fixed content, each macropixel being used to represent a numerical value which is manifested physically by the states of the pixels of the SLM and the content of the pixels of the pixelated optical element which form the macropixel. | ||||||
| 187 | Holographic Image Display Systems | US13256673 | 2010-03-25 | US20120008181A1 | 2012-01-12 | Adrian J. Cable; Gareth J. McCaughan |
| We describe a method of determining an aberration correction for a holographic image display system using a spatial light modulator (SLM) to display a hologram. Embodiments of the invention measure the corrections needed for a particular projection system, using the same system SLM as used to generate the images to provide wavefront-sensing holograms. The projector's projection optics are used to provide the wavefront sensor and there is no need for lenslets. Embodiments of the invention use a plurality of successive holograms directing light from differently-located patches on the hologram into the image. | ||||||
| 188 | HOLOGRAPHIC IMAGE DISPLAY SYSTEMS | US12831195 | 2010-07-06 | US20110002019A1 | 2011-01-06 | Paul Richard Routley; Alexander David Corbett; Adrian James Cable; Gareth John McCaughan |
| The invention relates to techniques for speckle reduction in holographic optical systems, in particular holographic image display systems. We describe a holographic image display system for displaying an image holographically on a display surface, the system including: a spatial light modulator (SLM) to display a hologram; a light source to illuminate said displayed hologram; projection optics to project light from said illuminated displayed hologram onto said display surface to form a holographically generated two-dimensional image, said projection optics being configured to form, at an intermediate image surface, an intermediate two-dimensional image corresponding to said holographically generated image; a diffuser located at said intermediate image surface; and an actuator mechanically coupled to said diffuser to, in operation, move said diffuser to randomise phases over pixels of said intermediate image to reduce speckle in an image displayed by the system. | ||||||
| 189 | Light Modulating Device | US12738704 | 2008-10-20 | US20100277779A1 | 2010-11-04 | Gerald Futterer; Bo Kroll; Steffen Buschbeck |
| The present invention relates to a light modulating device, comprising a SLM and a pixelated optical element, in which a group of at least two adjacent pixels of the SLM in combination with a corresponding group of pixels in the pixelated optical element form a macropixel, the pixelated optical element being of a type such that its pixels comprise a fixed content, each macropixel being used to represent a numerical value which is manifested physically by the states of the pixels of the SLM and the content of the pixels of the pixelated optical element which form the macropixel. | ||||||
| 190 | HOLOGRAM REPRODUCING AND IMAGING APPARATUS, AND HOLOGRAM REPRODUCING AND IMAGING METHOD | US12759230 | 2010-04-13 | US20100265554A1 | 2010-10-21 | Akira Shirakura; Koji Ishiwata; Fumihisa Kishibata; Yoshihiro Suigiura; Shigeyuki Baba; Shinichi Yoshimura |
| A hologram reproducing and imaging apparatus includes a reference light source configured to be arranged near a hologram recording material on which a hologram is recorded and has an arrangement of a plurality of light sources, a reference light source drive section configured to drive the plurality of light sources in a time-division manner, an imaging sensor configured to capture an image of a reproduction area irradiated with reference light from the reference light source and photoelectrically convert the image, and an image processing section configured to process an imaging signal from the imaging sensor. Partial captured images are obtained by enabling the imaging signal of the area irradiated when the plurality of light sources are turned on, and the partial captured images are combined to be a reproduction image by the image processing section. | ||||||
| 191 | Security Holograms | US12599403 | 2008-05-07 | US20100195175A1 | 2010-08-05 | Patrick Flynn; John David Wiltshire |
| We describe methods of recording a holographic image onto holographic recording film, film bearing recorded holographic images, and apparatus for recording a holographic image onto film, in particular for security holograms. We thus describe a method of recording a holographic image onto holographic recording film (108), said holographic image comprising a 3D object (102) or a hologram of a three-dimensional (3D) object in conjunction with a multi-channel holographic image (106), the method comprising: forming a holographic recording stack by: positioning said holographic recording film (108) over a multichannel image generation device (106); positioning at least one three-dimensional (3D) object (102) under said multichannel image generation device; and providing a transparent window (106b) in said multichannel image generation device in a region above said at least one object (102); and then recording said holographic image in said holographic recording film by illuminating said stack through said holographic recording film with a laser light (110) of at least one wavelength. | ||||||
| 192 | Color hologram display and its fabrication process | US11285950 | 2005-11-23 | US07710622B2 | 2010-05-04 | Emi Takabayashi; Daijiro Kodoma; Masachika Watanabe |
| The invention relates to a color hologram display an image of a three-dimensional object and a hologram image of a pattern of plane characters, images or the like are recorded in the same volume type hologram photosensitive material in a superposed or multiplexed fashion. A color hologram display 27′ comprising a combined reflection and volume type of single layer, wherein a color pattern 29g of plane characters, images or the like and a color three-dimensional subject image O″ are reconstructably recorded while spatially superposed one upon another. | ||||||
| 193 | METHOD AND DEVICE FOR OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING AND REPRODUCING APPARATUS | US12295424 | 2006-12-18 | US20100061212A1 | 2010-03-11 | Makoto Kamo; Yoshihisa Usami; Toshio Sasaki |
| The present invention is to provide a method for treating an optical recording medium including irradiating a recording layer, which has recorded information, with a treatment light through a light diffusion member having a haze of 70% to 100%, wherein the optical recording medium contains at least the recording layer which records information using holography, and a device for treating an optical recording medium containing a light source for the treatment light, and the light diffusion member having a haze of 70% to 100% and disposed between the light source and the optical recording medium, wherein the recording layer is irradiated with the treatment light through the light diffusion member from the light source. The preferred aspects are that a half width of wavelength for an energy intensity of the treatment light is 5 nm to 700 nm; and the optical recording medium is a write-once read-many optical recording medium. | ||||||
| 194 | Hologram Viewing Arrangement and Alignment Device | US12086552 | 2006-12-12 | US20090257104A1 | 2009-10-15 | Adrian James Cable; Edward Buckley; Nicholas Alexander Lawrence |
| The present invention relates to a hologram viewing arrangement, to an alignment device, to a display device, to a device for aligning first and second members and to a device for aligning an optical beam with a desired target. A hologram viewing arrangement comprising a pixellated phase mask substrate (20) and a pixellated hologram display substrate (40), wherein the hologram display substrate is arranged to store data representing at least two distinct images (3a-3d), the arrangement being such that disposing the phase mask in a first position with respect to the display substrate enables one of the at least two images to be visible and disposing the phase mask in a second position with respect to the display substrate enables another of the at least two images to be visible. | ||||||
| 195 | HOLOGRAM AND ITS HOLOGRAPHIC PROCESS | US12422092 | 2009-04-10 | US20090195846A1 | 2009-08-06 | 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. | ||||||
| 196 | Digital holographic microscope | US11284768 | 2005-11-22 | US07463366B2 | 2008-12-09 | Franck Dubois; Catherine Yourassowsky |
| A method and device for obtaining a sample with three-dimensional microscopy, in particular a thick biological sample and the fluorescence field emitted by the sample. One embodiment includes obtaining interferometric signals of a specimen, obtaining fluorescence signals emanating from the specimen, recording these signals, and processing these signals so as to reconstruct three-dimensional images of the specimen and of the field of fluorescence emitted by the specimen at a given time. Another embodiment includes a digital holography microscope, a fluorescence excitation source illuminating a specimen, where the microscope and the fluorescence excitation source cooperate to obtain interferometric signals of the specimen and obtain fluorescence signals emanating from the specimen, means for recording the interferometric signals and fluorescence signals, and means for processing the interferometric signals and the fluorescence signals so as to reconstruct three-dimensional images of the specimen and of the field of fluorescence emitted by the specimen at a given time. | ||||||
| 197 | Hologram recording and reproduction apparatus | US10998643 | 2004-11-30 | US07436749B2 | 2008-10-14 | Hisayuki Yamatsu |
| A hologram recording and reproduction apparatus is disclosed which can raise the degree of freedom in design to achieve miniaturization thereof and can raise the hologram recording density of the shift multiplexing type. Upon recording, recording light specially optically modulated by a spatial optical modulator and reference light having a wave front disturbed at random by a randomizing phase mask are coupled so as to have a common optical axis and introduced to a recording area of a hologram recording medium. As a result, the number of lenses to be moved so as to follow up the variation of the position of a recording area or a reproduction area can be reduced. Further, the random disturbance of the wave front of the reference light makes the shift selectivity sharp in both of the along-track direction and the cross-track direction. | ||||||
| 198 | Reconfigurable spatial light modulators | US11733181 | 2007-04-09 | US07414769B2 | 2008-08-19 | Christopher William Slinger |
| This invention relates to reconfigurable spatial light modulators (SLM) incorporating a scatter plate. Computer generated diffraction patterns or holograms may be loaded on the (SLM) either as a single frame or as a series of frames for observation by an observer. In a preferred embodiment both an electrically addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM) are used. The (OASLM) may be formed of several smaller (OASLMs) arranged in a matrix format. The faster (EASLM) forms a light pattern on the sub-areas of the large (OASLM) in turn to give a large display. The scatter plate is arranged at the output of the (SLM) nearest an observer. This scatter plate has a known characteristic and serves to increase the field of view and/or reduce the number of pixels required to give a holographic or two dimensional displays. Prior to producing a display, the diffraction patterns, holograms, or image in the computer is modified to take account of the properties of the scatter plate; a modified computer generated diffraction pattern, hologram, or image is then displayed to an observer. The system may also be used for optical switching. | ||||||
| 199 | Inline type speckle multiplexed hologram recording apparatus and inline type speckle multiplexed hologram recording method | US11095596 | 2005-04-01 | US07362482B2 | 2008-04-22 | Nobuhiro Kihara |
| An inline type speckle multiplexed hologram recording apparatus and method is disclosed which can condense signal light and reference light in a sufficiently overlapping relationship with each other on a hologram recording medium without using a lens having a large aperture and a wide angle of view. A signal light region and a reference light region are displayed on a spatial light modulator, and laser light is intensity modulated with recording data displayed in the signal light region to produce signal light while the laser light having passed through the reference light region is used as reference light. The signal light and the reference light are diffused by a diffuser and then condensed in an overlapping relationship with each other on a hologram recording medium by a lens such that interference fringes produced thereby are recorded in the hologram recording medium. | ||||||
| 200 | Active digital hologram display | US10980672 | 2004-11-03 | US07227674B2 | 2007-06-05 | Michael A. Klug; Craig Newswanger; Qiang Huang; Mark E. Holzbach |
| Certain types of holographic recording materials can be used to updateably record holographic stereograms formed when fringe patterns are generated through interference of an object laser beam containing image information with a reference laser beam. In this manner, calculation of fringe patterns is avoided, and instead perspective information is computed for a scene or object to be displayed, the information is downloaded to display hardware such as a spatial light modulator, and fringe patterns are subsequently generated through interference of an object laser beam containing this information with a reference laser beam in the classic hologram recording scheme. Previously recorded holographic stereograms or component hogels are updated by erasing the stereograms or component hogels and recording updated stereograms or component hogels, or by recording updated stereograms or component hogels in a separate portion of the holographic recording material. | ||||||
QQ群二维码
意见反馈
意见反馈