Match Document Document Title
6661547 Multi-structure holographic notch filter and a method of manufacturing the same  
The object of the present invention is to provide a holographic notch filter which can favorably reject and remove a narrow, desired range of wavelengths of the incident light and a method of...
6661495 Pancake window display system employing one or more switchable holographic optical elements  
An optical system including one or more switchable holographic optical elements is described for use with a pancake window display system. Each of the switchable holographic optical elements of...
RE38321 Transparent hologram seal  
A hologram forming layer, transparent evaporated layer, colored layer, adhesion anchor layer, and adhesive layer are sequentially laminated on the under surface of a base member. The laminated...
6646773 Digital micro-mirror holographic projection  
The present invention relates to a method and apparatus for display of three-dimensional images and production of mega-channel phase-encoded optical communications. In certain embodiments, the...
6646772 Holographic illumination system  
Disclosed is an apparatus and method of illuminating an image display via an electrically switchable holographic optical element. The method includes a first electrically switchable holographic...
6639700 Hologram recording medium, hologram recording/reconstructing apparatus, and hologram recording/reconstructing method  
A hologram recording medium comprises a hologram recording layer for recording a hologram, and a wedge substrate for varying the propagating direction of a reference light and an object light...
6638386 Method for making holographic foil  
A composite sheet having the capability of having embossed therein a holographic image or diffraction grating image has a structure of multiple layers including a plastic film carrier, lacquer,...
6636336 Apparatus for making holograms including means for controllably varying a beamsplitter  
A method and apparatus for making holograms includes a technique for exposing a film substrate or other light-sensitive medium to consecutive two dimensional images, together representative of a...
6624915 Holographic recording and micro/nanofabrication via ultrafast holographic two-photon induced photopolymerization (H-TPIP)  
A process and photoactive media for holographic recording and micro/nanofabrication of optical and bio-optical structures via the simultaneous absorption of two-photons by the photoactive media to...
6596360 Multilayer volume hologram, and label for multilayer volume hologram fabrication  
In the multilayer volume hologram 1 of the invention, the adhesive layer 5, volume hologram 6 and surface protective film 7 are laminated on the application member 2 in this order, and the...
6596183 Cutting-free method for making a hologram sticker and the structure of the sticker  
A cutting-free method for making a hologram sticker includes the steps of adding a releasing layer on a base; plating a metal layer on the releasing layer; printing an epoxy layer with a...
6594042 Optical element, optical pickup, information recording and reproducing method, and polarizing hologram  
An optical element that receives a first incident light and a second incident light through a main surface and allowing the first and second incident lights to be transmitted therethrough, the...
6587234 Method and apparatus for creating a white-light interference hologram from PC input photographic data  
A system for producing a white-light interference hologram includes a camera adapted for recording a first and a second bitmap image of a scene from separate vantage points, and the separation...
6567193 Hologram production technique  
A system for forming holographic pixels on the surface of a workpiece is disclosed. The system comprises a laser generating a laser beam; a beam splitter dividing the laser beam into a first beam...
6558851 Optical medium for registration of holographic interferograms  
This invention relates to the photo-sensitive thermoplastic top-layer of optical media for registration of holograms, where the media consists of three transparent layers where the bottom layer is...
6552831 Active and passive holographic optical based curved surface element  
Disclosed is a curved surface element (e.g., light bulb, ornament, light pipe, etc.) which has at least a portion thereof (inner or outer surface) covered with a holographic diffraction grating...
6549309 Holography apparatus, method and product  
Holographic patterns are produced by utilizing a laser to illuminate a workpiece with an interference pattern, with sufficient laser power to ablate the workpiece where it is illuminated by the...
6549664 Sparse modulation codes for holographic data storage  
A method for storing data in a holographic storage medium comprises the steps of dividing a bit stream of binary data into data groups, encoding the data groups as binary patterns, and storing the...
6538776 Self-referenced holographic storage  
The invention presents the concept of self-referenced holographic data recording. In exemplary embodiments, the invention comprises methods of recording holograms on holographic data storage...
6534158 Color shifting film with patterned fluorescent and non-fluorescent colorants  
Disclosed are articles having a color shifting film and indicia located behind the color shifting film. The indicia include at least a first and second colored portion, the first portion including...
6515775 Diffusive optical element, illumination optical system, and image-shooting apparatus  
A diffusive optical element exploiting holography is designed in such a way that, the higher the intensity of incident light in a wavelength range, the lower the rate at which the intensity of...
6514589 Solar control film  
This invention relates to a solar control film that blocks the sunlight, when applied to various windows of automobiles, buildings or exhibition places and that prevent any second accident caused...
6509983 System and method for adjusting recording laser beam polarization  
Systems and methods for adjusting the polarization of one or more recording laser beams can correct (in whole or in part) for the changes in the polarization of the recording laser beam(s) caused...
6506480 Color shifting film with a plurality of fluorescent colorants  
Disclosed are articles having a color shifting film and indicia located behind the color shifting film. At least a first and second colored portion are arranged as a foreground and background of...
6491395 Image reproducing apparatus for hologram or holographic stereogram  
An image reproducing apparatus having a small size and which is highly portable reproduces an image contained within a hologram or holographic stereogram. In one embodiment, when a movable section...
6490060 Lightweight holographic sight  
A lightweight contact holographic sight includes a housing and a base which form a compartment containing a laser diode, an associated power source, and optical elements including a mirror, an off...
6483533 Projection televisions with three dimensional holographic screens  
A projection television is provided comprising at least three image projectors for projecting respective images of different colors onto a holographic projection screen. One of the projectors has...
6476942 Process for producing original hologram film  
In order to prevent decrease in diffraction efficiency that is brought about when the diffraction peak wavelength shifts due to, for example, the shrinkage of a volume-hologram-recording...
6476944 Image-forming apparatus  
An apparatus for forming at or closer than infinity one or more images of multiple sources is disclosed. The new concept of this invention will permit the manufacture of a flat holographic...
6473208 Two-color holographic recording apparatus  
A two-color holographic recording apparatus reduces error signals possibly included in reproduced digital data signals. The two-color holographic recording apparatus has first, second and third...
6462869 Projection screen and system for large-surface images  
A projection screen (30) for representation of images by back-projection comprises a plurality of holographic-optical elements (10) arranged in one plane. The holographic-optical elements are...
6459514 Multilayer polymer film with additional coatings or layers  
A multilayer optical film comprising: (a) an optical stack comprising alternating layers of at least a first polymer and a second polymer; and (b) a holographic image.
6437886 Device and method for recording an interference pattern in a photosensitive medium  
A device and method for recording holographic gratings by the use of a single illuminating beam, two diffraction gratings, light detectors and a slit-scanning system. The beam illuminates two...
6426811 Switchable holographic optical system  
An optical system and an imaging and display system using the optical system. The optical system has at least first and second optical elements aligned on a common axis. In one embodiment, each of...
6414762 Optical information recording and reproducing apparatus using a holographic memory  
An optical information recording and reproducing apparatus, which detachably supports a holographic memory formed of a photorefractive crystal, includes a portion for supplying a coherent...
6411406 Holographic microscope and method of hologram reconstruction  
A holographic microscope is described along with a method for numerically reconstructing a holographic image. The method uses a coordinate transformation of the Kirchhoff-Helmholtz equation to...
6392768 Dot matrix hologram with a hidden image  
A dot matrix hologram with a hidden image is disclosed, wherein the hidden image technology is applied to a dot matrix hologram. Although the hidden image technology has been used in a...
6377367 Method of recording and reproducing hologram and apparatus for recording and reproducing hologram  
The first reading beam identical to the first reference beam and the second reading beam conjugate to the second reference beam are simultaneously applied to a hologram recording medium 1, on...
6366371 Transmissively viewable reflection hologram  
A transmission hologram allowing an illuminating light source for holographic reconstruction to be placed behind the hologram, i.e. on the side opposite to the viewing side, and permitting...
6366369 Transmission hologram fabrication process  
The invention relates to a process capable of fabricating a variety of transmission holograms having a simple structure, a wide visible range and a large area and comprising the first stage of...
6339486 Holographic technique for illumination of image displays using ambient illumination  
An apparatus and method is disclosed for illuminating an image display with ambient light using holographic techniques. The apparatus includes a pair of holographic optical elements each having a...
6323971 Hologram incorporating a plane with a projected image  
A system and method for generating a composite display that includes at least one static three dimensional holographic image, and dynamic and/or static two dimensional images. An object hologram...
6322932 Holographic process and media therefor  
High storage densities using a holographic system are achievable using a stratified medium while maintaining a relatively high selectivity upon reconstruction of the stored images. Such...
6317227 Hologram  
A hologram has a hologram element 3 containing a photopolymer and a cover film 22 and cover plate 21 which cover its surfaces. An adhesive 1 is used for bonding the cover film to the hologram...
6317226 Dot matrix hologram for hiding a moire pattern  
A moire pattern technology about a dot matrix hologram for hiding a moire pattern is invented. In the moire pattern hidden region of a dot matrix hologram, the moire pattern foreground area and...
6309735 Subject plate for recording holograms, hologram-making method, and hologram-recorded article  
The invention provides a hologram-recording subject plate comprising a block and a variety of subjects fixedly contained therein, which ensures easy, stable yet continuous recording of a...
6291109 Hologram and method of and apparatus for producing the same  
A duplicating photosensitive material film is brought into close contact with an ND glass reduced in thickness so as to become flexible or a flexible sheet or an ND glass coated with a cushioning...
6288804 Positive unit magnification reflective optics for holographic storage  
A positive unit magnification reflective head is used to back-reflect a primary light beam, for storing reflection microholograms at the coincident foci of the primary and reflected beams. Imaging...
6268941 Holographic display screen with integrated speckle suppression  
A method for suppressing image speckles in a holographic screen is provided in which the screen is illuminated in the hologram in a plurality of individual steps, changing the recording parameters...
6262819 Hologram image recording apparatus and method  
A hologram-image recording method and apparatus are provided which prevents or attenuates vibrations so as to produce a bright holographic stereogram having high diffraction efficiency. Such...