|
Match
|
Document |
Document Title |
|
|
6844946 |
Tunable holographic filter
An optical add/drop filter is formed using a hologram which is tuned to a wavelength in an optical signal. The diffraction condition of the hologram may be varied to vary the in add or drop content.
|
|
|
6842272 |
Hologram plate and its fabrication process
The invention provides a hologram plate which is used with the double-focus replication process, and which is integrated with a spacer to impart marring resistance thereto, and is integrated with a...
|
|
|
6842271 |
Rain sensor, in particular for a motor vehicle
A rain sensor for a motor vehicle, having a transmitter emitting radiation, a receiver, and a holographically embodied diffractive element that has a linear-grating-like structure.
|
|
|
6833938 |
Variable hologram element, and optical device using the same
The invention relates to an optical element with variable optical properties, which ensures that the amount of light available is increased, and an optical device using the same. In a liquid...
|
|
|
6829067 |
Method and apparatus for implementing a multi-channel tunable filter
The present invention provides a multi-channel tunable filter and methods for making such a filter. In one embodiment, the filter comprises a bank of gratings imprinted into a filter material, such...
|
|
|
6829066 |
Hologram screen
The present invention provides a hologram screen which is capable of preventing separation, and damage to, a hologram film and which permits the hologram film to be reused easily. The present...
|
|
|
6825959 |
Holographic viewing device, and computer-generated hologram for the same
The invention relates to a holographic viewing device that has a high diffraction efficiency, enables bright patterns with less noticeable conjugate or higher-order images to be viewed in place of...
|
|
|
6822772 |
Holographic display
The invention relates to a holographic display for storing and reducing a spatial structure, having a holographic screen forming the master hologram, and having a projection device which...
|
|
|
6818270 |
Hologram laminate and hologram label
A hologram laminate allows traces of separation of the hologram to be clearly left on both the adherend and the hologram label and hence makes it possible to prevent reuse of the hologram and is...
|
|
|
6801722 |
Optical tracking system with reflective fiber
An optical tracking system for use in an optical receiver of an optical communication system includes a first focus unit, a tracker, and an optical fiber having an angled tip. The first focus unit...
|
|
|
6801721 |
Polarization mode dispersion compensator for optical fiber communication systems
Optical infinite impulse response (IIR) filters are efficient polarization mode dispersion (PMD) compensators, requiring fewer stages than finite impulse response (FIR) filters. IIR filter...
|
|
|
6797366 |
Color shifting film articles
Multilayer polymeric films and other optical bodies are provided which is useful in making colored mirrors and polarizers. The films are characterized by a change in color as a function of viewing...
|
|
|
6775036 |
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...
|
|
|
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...
|
|
|
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 ...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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 the...
|
|
|
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 body...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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 media;...
|
|
|
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...
|