Optical pickup using an optical phase plate
An object of the present invention is to provide an optical pickup apparatus which is compatible with a digital video disk and a recordable compact disk by removing a spherical aberration using a phas... Read More
Inventors: Yoo, Jang Hoon; Lee, Chul Woo; Chung, Chong Sam; Seong, Pyong Yong; Cho, Kun Ho; Choi, Hyun Seob; Lee, Yong Hoon; Kim, Tae Kyung; Park, No Kyong;, Assignee: Samsung Electronics Co., Ltd. (Suwon-si, KR) |
Light diffusion sheet and backlight unit using the same
The present invention was accomplished taking into account of such disadvantages, and objects of the present invention are to provide a light diffusion sheet capable of improving heat resistance, ther... Read More
Inventors: Uekita, Masakazu; Mineo, Yutaka;, Assignee: Keiwa Inc. (Osaka, JP) |
Log time processing and stitching system
It is an object of the present invention to provide a method of directly determining the exposure, or brightness, of a given pixel of data associated with a portion of a scanned image of a developing ... Read More
Inventors: Canata, Philip Eugene;, Assignee: Applied Science Fiction, Inc. (Austin, TX) |
Method and apparatus for creating a white-light interference hologram from PC input photographic data
What is claimed is: 1. A system for producing a white-light interference hologram, comprising: a camera adapted for recording a first and a second bitmap image of a scene from separate vantage points,... Read More
Inventors: Kikinis, Dan;, Assignee: Lextron Systems, Inc. (Saratoga, CA) |
Device-independent and medium-independent color matching between an input device and an output device
What is claimed is: 1. A method for deriving color space transformations for a color image reproduction system comprising an input device and an output device, wherein said output device has an output... Read More
Inventors: Lin, Tsung-Nan; Shu, Joseph;, Assignee: Seiko Epson Corporation (Tokyo, JP) |
Rotatable sheet feed scanner and method for using the same
The above listed shortcomings of current desktop scanners is overcome by the scanner of the present invention. These and other advantages are accomplished in a desktop scanner that leverages the deskt... Read More
Inventors: Esquibel, Daniel M.; Tomlinson, Roydan;, Assignee: Hewlett-Packard Company (Palo Alto, CA) |
Stereoscopic image information transmission system
Therefore, the present invention, in consideration of the above problems, has as its object the provision of a stereoscopic image information transmission system which enables the hardware on the tran... Read More
Inventors: Nakagawa, Akira; Morimatsu, Eishi; Konoshima, Makiko; Matsuda, Kiichi;, Assignee: Fujitsu Limited (Kawasaki, JP) |
Network facsimile apparatus
An object of the present invention is to provide a network facsimile apparatus which is able to decrease network traffic caused by data transmission. Another object of the present invention is to prov... Read More
Inventors: Iida, Junichi;, Assignee: Panasonic Commonications Co., Ltd. (Fukuoka, JP) |
Method for making hologram ornamental sticker
The main object of the present invention is to provide a method for making ornamental hologram stickers. The method is free of separate cutters to cut the image out, and directly prints out ornamental... Read More
Inventors: Yang, Daphne;, Assignee: |
Method for forming spatially-varying distributed Bragg reflectors in optical media
We have discovered a new method for making gratings, such as Bragg gratings, having spatially dependent periods. In contrast to prior an methods, the period can be independently specified in different... Read More
Inventors: Mizrahi, Victor; Mollenauer, Linn F.;, Assignee: AT&T Bell Laboratories (Murray Hill, NJ) |
Cascaded self-induced holography
To address the foregoing problems, the present invention provides a method and apparatus for fabricating submicron periodic gratings and other fine patterns in optical devices at a resolution well in ... Read More
Inventors: Lin, Chih-Hsien Jason; Lo, Yu-Hwa;, Assignee: Cornell Research Foundation, Inc. (Ithaca, NY) |
Writing Bragg gratings in optical waveguides
It is an object of the present invention to provide a method of writing a Bragg reflection grating in an optical waveguide using a diffraction grating located at a sufficient distance from the wavegui... Read More
Inventors: Byron, Kevin Christopher;, Assignee: Nortel Networks Limited (Montreal, CA) |
Optical logic device and optical memory device
The invention has been developed in view of the circumstances described above, and an object of the invention is to provide an optical logic device having a simple constitution that can be produced at... Read More
Inventors: Usami, Yoshihisa; Naya, Masayuki; Inagaki, Yoshio;, Assignee: Fuji Photo Film Co., Ltd. (Kanagawa-ken, JP) |
Non-aqueous electrolyte cell
An object of the present invention, therefore, is to provide a non-aqueous electrolyte cell capable of drastically improving a high rate discharge characteristic after storage as well as before storag... Read More
Inventors: Takahashi, Masatoshi; Yoshimura, Seiji; Furukawa, Nobuhiro;, Assignee: Sanyo Electric Co., Ltd. (Osaka, JP) |
Incandescent light with parallel grooves encompassing a bulbous portion
In accordance with the illustrative embodiments illustrating features and advantages of the present invention, there is provided an incandescent light having an evacuated envelope and an electrical fi... Read More
Inventors: Monto, Mark;, Assignee: |
Cable grid spectral lighting system
OF THE INVENTION As shown in FIGS. 1 and 2, the basic components of the trapeze grid lighting system are the support cables 1 charged with positive low voltage current, the support cables 2 charged w... Read More
Inventors: Douglass, II, Myrl Rae;, Assignee: |
LTG AlGaAs non-linear optical material and devices fabricated therefrom
The foregoing problems are overcome and the objects of the invention are realized by a light responsive device having a body that includes a semiconductor material that exhibits an excitonic transitio... Read More
Inventors: Freeouf, John L.; Hodgson, Rodney T.; Kirchner, Peter D.; Melloch, Michael R.; Woodall, Jerry M.; Nolte, David D.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Method and apparatus for optical data storage using non-linear heating by excited state absorption for the alteration of pre-formatted holographic gratings
OF THE INVENTION In a presently preferred embodiment of the present invention, by way of example and not necessarily by way of limitation, an optical data storage medium, that includes molecules whic... Read More
Inventors: Cumpston, Brian H.; Perry, Joseph W.; Marder, Seth R.;, Assignee: Siros Technologies, Inc. (San Jose, CA) |
Encrypted holographic data storage based on orthogonal phase code multiplexing
In a method of the present invention, a data page S.sub.m is stored using a reference beam R.sub.m whose wavefront is modulated using a phase function W.sub.m and an encryption key K. A second page S.... Read More
Inventors: Heanue, John F.; Bashaw, Matthew C.; Hesselink, Lambertus;, Assignee: The Board of Trustees of the Leland Stanford Junior University (Stanford, CA) |
Light diffusion control by electrically reconfigurable holographic optical elements
A system and a method of displaying projected images on a projection screen of the system utilize one or more reconfigurable holographic optical elements (HOEs) in the screen to optically manipulate t... Read More
Inventors: Popovich, Milan M.;, Assignee: DigiLens, Inc. (Sunnyvale, CA) |
Image display apparatus
An object of the present invention is to provide an inexpensive image display apparatus that forms an observation pupil that permits easy observation of the displayed image. To achieve the above objec... Read More
Inventors: Endo, Takeshi; Kasai, Ichiro; Morimoto, Takashi; Noda, Tetsuya;, Assignee: Minolta Co., Ltd. (Osaka, JP) |
Color display device in which the area of a spherical lens equals the area of a set of RGB sub-pixels
More precisely, the subject of the invention is a color display device comprising a light source (S) simultaneously emitting several ranges of chromatic components (R, G, B) and a spatial light modula... Read More
Inventors: Lehureau, Jean-Claude; Loiseaux, Brigitte; Joubert, Cecile;, Assignee: Thomson-CSF (Paris, FR) |
Non-volatile holographic storage in doubly-doped photorefractive material
The holographic devices and techniques in the present disclosure are based on a special kind of photorefractive materials that are doped to include first and second types of photorefractive centers o... Read More
Inventors: Buse, Karsten; Adibi, Ali; Psaltis, Demetri;, Assignee: California Institute of Technology (Pasadena, CA) |
Stereo image forming apparatus
The present invention was provided in view of the background as described above, and it has an object of providing a pertaining apparatus, which requires relatively short computation time, and hence p... Read More
Inventors: Tabata, Seiichiro;, Assignee: Olympus Optical Co., Ltd. (Tokyo, JP) |
Card reading system
The invention comprises a system for generating a unique indication of an identity carried by a card. Primary components of the invention comprise a card which has a plurality of defined zones thereon... Read More
Inventors: Stiller, Bruno V.;, Assignee: |
Optical pattern recognition system and method for verifying the authenticity of a person, product or thing
Invisible patterns that cannot be seen and cannot be copied by a detector such as the CCD camera are utilized for verification of the authenticity of items bearing the pattern. The pattern consists of... Read More
Inventors: Horner, Joseph L.; Javidi, Bahram; Walkup, John F.;, Assignee: The United States of America as represented by the Secretary of the Air (Washington, DC) |
Dual card smart card reader
The above problems and others are at least partially solved and the above purposes and others are realized in a dual card smart card reader including a portable housing having contained therein dual s... Read More
Inventors: Jachimowicz, Karen E.; Novis, Scott R.; Barry, Dennis;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Liquid crystal display
Accordingly, it is a first object of the present invention to provide a liquid crystal display which may basically exhibit positive mode images and simultaneously realize clear black-white images and ... Read More
Inventors: Kano, Mitsuru; Miyagawa, Kenji; Yamaguchi, Masahiko; Imaizumi, Eiji;, Assignee: Alps Electric Co., Ltd. (Tokyo, JP) |
Polymer dispersion type liquid crystal display element and reflection type liquid crystal display device
OF THE PREFERRED EMBODIMENTS Now referring to the drawing, the preferred embodiments of the invention are described below. EXAMPLE 1 An embodiment of the invention is described in detail below by ref... Read More
Inventors: Yamada, Nobuaki; Hirai, Toshiyuki; Onishi, Noriaki; Kohzaki, Shuichi;, Assignee: Sharp Kabushiki Kaisha (Osaka, JP) |
Reflective image-providing display viewed with holographically diffused ambient light
OF THE INVENTIVE SUBJECT MATTER The present invention encompasses a display viewable by reflection, the display comprising an image-providing display element and a reflective holographic diffuser. Th... Read More
Inventors: Wenyon, Michael M.;, Assignee: Polaroid Corporation (Cambridge, MA) |
Optical Systems 
