| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 359029000 | Fourier transform holography | 8 |
| 20090080043 | HOLOGRAM DECODING APPARATUS, HOLOGRAM DECODING METHOD AND COMPUTER READABLE MEDIUM - A hologram decoding apparatus is provided and includes: a light receiving unit including an imaging device that receives a reproduced image obtained by reading a code image from a hologram recording medium in which a Fourier transform image of the coded image with n pixels expressing digital information is recorded, n being an integer of 2 or more, and that outputs the reproduced image with k resolution pixel numbers, k being an integer more than n; a storing unit that stores a plurality of sets of a reference image and digital information corresponding to the reference image, the reference image being expressed the reproduced image from the hologram recording medium, which is coded with m pixels of k≧m>n; and a decoding unit that refer reference images stored in the storing unit to specify a reference image corresponding to the reproduced image received by the light receiving unit; and that carries out a decoding processing to set the digital information corresponding to the specified reference image as digital information of the reproduced image. | 03-26-2009 |
| 20090097086 | Lens system for common aperture holographic storage system - The present invention relates to a lens system for an apparatus for reading from and/or writing to holographic storage media, and more specifically to a lens system optimized for an apparatus with a coaxial common aperture arrangement of an object beam and a reference beam. | 04-16-2009 |
| 20090213443 | Apparatus and method for encoding or/and decoding digital hologram - Provided is an apparatus for encoding and/or decoding a digital hologram. The apparatus for encoding a digital hologram includes: a segmentation unit for dividing a digital hologram inputted from an external device into a plurality of blocks; an orthogonal transforming unit for orthogonally transforming each of the divided blocks; a quantization unit for quantizing information of each of the transformed blocks; a scanning unit for scanning each of the quantized blocks to transform the plurality of the quantized blocks to single moving image sequence; and a moving image encoding unit for encoding the single moving image sequence configuring a digital hologram to compress the signal moving image sequence. | 08-27-2009 |
| 20090219596 | HOLOGRAPHIC PRINTER - A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram. | 09-03-2009 |
| 20100033784 | Holographic Projection Device for the Reconstruction of Scenes - A holographic projection device comprises for the reconstruction of scenes at least one light source which emits sufficiently coherent light for the generation of a wave front. Further, the projection device comprises at least one light modulator device containing modulation elements, said projection device being of a two-dimensional design. The light modulator device and a scanning element are combined such that the light emitted by the scanning element only scans one one-dimensional arrangement of modulation elements of the two-dimensional light modulator device at a time. | 02-11-2010 |
| 20100060962 | SYSTEM, APPARATUS AND METHOD FOR EXTRACTING IMAGE CROSS-SECTIONS OF AN OBJECT FROM RECEIVED ELECTROMAGNETIC RADIATION - An Apparatus and method to produce a hologram of a cross-section of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation An image capture assembly is configure to capture an image of the diffracted electromagnetic radiation and produce the hologram of the cross-section of the object from the captured image. The hologram of the cross-section includes information regarding a single cross-section of the object. | 03-11-2010 |
| 20100097676 | Holographic storage system with improved data page quality - A holographic storage system having an improved data page quality is described. The holographic storage system includes a special optical filter or a special light source for emphasizing the high frequency components of a reference beam and/or an object beam. This is achieved by an optical filter arranged in a Fourier plane, which has a higher attenuation at the center than at the edge. Alternatively, an adapted light source for generating the reference beam and/or the object beam is arranged in a Fourier plane. The light beam emitted by the light source has a higher intensity close to the edge than at is the center. | 04-22-2010 |
| 20140240807 | DIGITAL HOLOGRAM RECORDING SYSTEM AND NUMERICAL RECONSTRUCTION METHOD FOR HOLOGRAM - The present invention provides a digital hologram recording system and a numerical reconstruction method for a hologram, which are used for capturing an image of an object and recording it as a holographic data. Said system comprises: signal light, formed after irradiating the object with a light source; an image detector, for recording interference fringes of the signal light; and a light pipe, arranged in a path of the signal light and located between the object and the image detector, wherein the light pipe has a reflection surface, and a part of the signal light enters the image detector after reflected by the reflection surface of the light pipe. The present invention can make the collected signal equivalent to several times of the pixel counts of the image detector, thereby able to break through the spatial bandwidth limitation and shortening the amount of time required to measure the hologram. | 08-28-2014 |
