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6771402 Method and apparatus for generating a hologram  
A method and system for generating a hologram include a computer (104) connected to a printer (108). A mathematical description (102) of an object, including for example the physical dimensions of...
6757086 Hologram forming apparatus and method, and hologram  
The image data generator 1 produces image data for recording into a holographic stereogram. The image data generator 1 combines a stereo image model being at least a part of a three-dimensional...
6747768 Information carrier with a hologram  
An information carrier includes information in the form of a hologram. In order to increase protection against copying and/or as a simple recognizable additional security feature of this...
6735001 Image display apparatus  
An image display apparatus comprises a hologram screen 2 formed by bonding a hologram element 20 to light-transmissible films 21 and an illumination device 11 for irradiating image light 10 onto...
6731416 Holographic privacy filter for display devices  
A privacy filter for use on an electronic display screen, such as a PDA display screen or a laptop display screen, is constructed using holographic imaging technology. The privacy filter consists...
6731415 Multi-aperture holographic optical element for use in a free space optical communication system  
A holographic element (HOE) with multiple apertures formed in a single substrate for use an optical communication system. The multi-aperture HOE can be use instead of an optics unit having one or...
6727937 Holographic device for formation of colored, polarized and angularly separated light beams and video image projector which utilizes it  
A holographic device, which has first and second roughly coplanar and superposed holograms, which are illuminated by the same non-polarized light beam with at least first and second spectral...
6709790 Method and apparatus for generating periodic structures in substrates by synthetic wavelength holograph exposure  
A substrate surface 10 having a photo-sensitive material surface thereon is simultaneously exposed to four plane waves of light at angles of incidence θ, −θ, φ and −φ subtending from the normal of...
6709393 Ultrasonic receiving apparatus and ultrasonic receiving method  
An optical detection type ultrasonic receiving apparatus in which S/N ratio of the detection signal is increased while preventing the apparatus from increase of size and cost. The ultrasonic...
6710900 Holograms exposed and processed on plastic substrates  
A holographic recording material coupled to a plastic substrate can be exposed to an interference pattern formed by at least one coherent light source, and subsequently processed, thereby...
6706354 Volume hologram laminate, and label for preparation of volume hologram laminate  
There are provided a volume hologram laminate and a label for the preparation of a volume hologram laminate which, when kept in the pressed state, for example, during storage, is less likely to...
6697178 Disk with holographic security label applied thereto and method of applying label  
An optical disk has a holographic security label applied in a recessed portion of the disk. An associated method of applying a holographic label to a recessed portion of an optical disk is also...
6687030 Method and apparatus for illuminating a display  
Disclosed is a device for producing colored light and an image generating apparatus including such a device. The device includes a switchable light-directing apparatus configured to receive light...
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...
6661546 Multi-aperture holographic optical element for illumination sensing in a free space optical communication system  
A free space (FSO) receiver includes an illumination sensing unit with multiple illumination apertures. The illumination sensing unit is used in deriving alignment information from portion(s) of a...
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...
6604436 Ultra-accelerated natural sunlight exposure testing facilities  
A multi-faceted concentrator apparatus for providing ultra-accelerated natural sunlight exposure testing for sample materials under controlled weathering conditions comprising: facets that receive...
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...
6497778 Method for making holographic foil  
A composite sheet having the capability of having embossed therein a holographic image or diffraction grating image having a structure of multiple layers including a plastic film carrier, lacquer,...
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...
6459513 Holographic shrink wrap element and method for manufacture thereof  
A holographic shrink wrap element containing a shrink wrap film and a layer on the shrink wrap film, wherein the layer contains a holographic image. A process for preparing a holographic shrink...
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...