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7416306 |
Laser projector
A reflection-type laser projector ( 100 ) projects modulated laser beams outputted from a laser projection unit ( 40 ), on a screen, wherein a reflector ( 112 ) as a constituent of the screen ( 110...
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7364300 |
Theta-parallax-only (TPO) displays
A 3-D display may comprise a rotating optical diffuser for displaying 3-D parallax images in specific substantially unidirectional viewing zones as the rotating optical diffuser rotates; and a...
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7218597 |
Holographic recording method
In the disclosed holographic recording method, when multiplex recording of data of a plurality of pages is performed, exposure time of a hologram of a final page to be recorded is fixed...
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7187481 |
System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment
System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment. A plurality of...
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7099058 |
Hologram preparing method
In the method for producing holograms, a plurality of images displayed on a spatial optical modulating element 6 is used as the object light. Through a lens array 7 composed of a plurality of...
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7088488 |
Spatial light modulator device with diffusive element
The invention is directed to a spatial light modulator device that can improve holographic data recording systems, and various methods and systems incorporating the device. The spatial light...
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7029128 |
Table type display device
A table type display device, in which a high resolution display with an unremarkable connection is realized at the time of large screen display by using a screen with a composition having few...
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6999071 |
Method and apparatus for displaying 3d images
The invention relates to a method for displaying three-dimensional images. In the method light beams (L e ) are associated to several different screen points (P) of a screen ( 20 ). The light beams...
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6982817 |
Method, device and laser system for producing screen holograms, and screen hologram
In a method of producing video screen holograms, a real video screen is illuminated by means of a narrowband light for producing a hologram of the real video screen. A plurality of individual...
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6980337 |
Apparatus and method for recording digital data on a holographic storage system
A holographic apparatus includes a mask for modulating a signal beam to generate a modulated signal beam; a conical prism, which has a cone portion and a base portion, for refracting a reference...
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6975443 |
Multi-beam pattern generator
A scanning pattern generator and a method for microlithographic multi-beam writing of high precision patterns on a photosensitive substrate ( 11 ), the system comprising a light source ( 1 ),...
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6914918 |
Optical device, laser beam source, laser apparatus and method of producing optical device
After forming domain inverted layers 3 in an LiTaO 3 substrate 1 , an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus...
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6912074 |
Method of producing a big size holographic projection screen for displaying a three-dimensional color images without color deterioration
A method of producing a big size holographic screen for projection of the stereoscopic or multiview 3-dimensional color images is proposed, where a narrow and elongate slit-shaped diffuser is...
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6903851 |
Method for producing light scattering elements
The present invention relates to a method for producing light-scattering elements by holographic illumination of a layer ( 10 ) of a photo-sensitive material on a support plate ( 1 ) and subsequent...
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6894815 |
Reference beam absorbers-blockers
In accordance with teachings of the present invention, a device accomplishes the task of reducing or preventing reflections of the reference beam off a diffuser from striking the holographic...
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6870651 |
Apparatus and method for generating a dynamic image
Apparatus for generating a dynamic image includes a laser light source for generating a coherent beam of light; optics for separating the light beam into a reference beam and an object beam; a...
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6852452 |
Method of fabricating hologram screen and hologram imaging apparatus
A method of fabricating a hologram screen having a large visual range and a hologram imaging apparatus used for the particular method of fabricating the hologram screen are disclosed. A plurality...
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6836348 |
Image display device and holographic screen
An image display device comprising a holographic screen and an image projection device for projecting an image beam onto the holographic screen at an upward or downward angle is provided, wherein a...
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6731991 |
System for projecting light on a work surface to produce an image for tracing
A method and system of projecting light on a planar surface to produce an image for tracing is disclosed. The system includes a projector that has a light source and a signal conditioner that is...
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6721075 |
Holographic optical element
A holographic optical element comprising at least two sets of regions, the regions of each set being different from the regions of the other set(s) and being interleaved or overlapping with the...
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6692129 |
Display apparatus including RGB color combiner and 1D light valve relay including schlieren filter
The optical system includes a plurality of light modulators, one or more combining filters, and an optical relay system including a filter. Each light modulator modulates a corresponding incident...
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6639699 |
Optical system for recording or replicating hologram
The invention provides a hologram recording or replicating optical system wherein a misalignment-with-time of the center of a laser generated beam is automatically corrected so that the color...
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6602596 |
Light diffusion sheet
There is provided a light diffusion sheet comprising a light diffusion layer formed on a transparent substrate and containing a binder resin and resin particles that impart an uneven surface,...
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6590680 |
Holographic optical element
A holographic optical element comprising at least two sets of regions, the regions of each set being different from the regions of the other set(s) and being interleaved or overlapping with the...
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6516008 |
Laser pulse slicer and dual wavelength converter for chemical sensing
A wavelength conversion system and method. The inventive system is adapted to receive a beam of input energy having a first spiked portion with a first wavelength and a first spatial and/or...
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6486982 |
System for making a hologram of an image by manipulating object beam characteristics to reflect image data
A system for converting an image into a hologram formed from diffraction gratings includes obtaining image data for each pixel in an image to be converted, putting it into digital form and using...
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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...
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6431731 |
Laser device and method for producing diffuse illumination
A laser device which directs one or more wavelengths of pulsed diffuse laser light at a target to produce a diffuse laser illumination, and a method of illuminating and viewing a target with the...
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6330086 |
Digital holography device
A digital holography device, applicable for example to the 3D mapping of objects, is used to determine the complex amplitude of a signal wave coming from an object illuminated by a known...
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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 combination...
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6288805 |
Holographic projection screen and method of production
A holographic projection screen for large screen projection and back projection with a liquid crystal projector. The screen includes at least one layer made of a photosensitive material in which at...
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6256123 |
Projection liquid crystal display apparatus, process for producing holographic optical element for use in the display apparatus and holographic optical element produced by the method
A projection liquid crystal display apparatus has a light source for emitting white light and a liquid crystal display unit, between which a holographic optical element serving as the color...
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6233071 |
Holographic optical element
A holographic optical element comprising at least two sets of regions, the regions of each set being different from the regions of the other set(s) and being interleaved or overlapping with the...
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6226110 |
Method and apparatus for holographically recording an essentially periodic pattern
The present invention relates to a method and an apparatus for holographically recording periodic or quasi-periodic features of a mask in a holographic recording layer. In holographic lithography...
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6222755 |
Solid state holographic memory
A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed...
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6211977 |
Method of producing a holographic projection screen for displaying a three-dimensional color images
A method of producing a holographic screen for projection of the three-dimensional color images is proposed, where a narrow and elongate slit-shaped diffuser is recorded on the hologram as an...
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6201565 |
Method and apparatus for displaying three-dimensional images
The method and apparatus of the invention pertains to a simultaneously modulated light beam carrying the information of a three-dimensional image is directed to pixels (image points) defining a...
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6198555 |
Manufacturing method for a hologram and a related exposure apparatus
A coherent beam is converted into a light flux having an expanded width at a predetermined position closer to a photosensitive element. Part of the expanded light flux is irradiated directly on the...
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6198554 |
Method for producing a hologram and a display device using the same
A method for producing a hologram recording an interference fringe formed by an object light and a reference light on a photosensitive dry plate, and the object light either having diffusing and...
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6185018 |
Holographic stereogram printing system
A holographic stereogram printing apparatus that is able to formulae a holographic stereogram superior in light utilization efficiency and in picture uniformity. The holographic stereogram printing...
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6166389 |
Apparatus having a light source and a sol-gel monolithic diffuser
An apparatus for projecting light on to a predetermined area includes a light source and a transparent element disposed adjacent the light source where in the transparent element is made from a...
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6163390 |
Method for producing a hologram and a display device using the same
A method for producing a hologram recording an interference fringe formed by an object light and a reference light on a photosensitive dry plate, and the object light either having diffusing and...
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6157474 |
Holographic optical element
A display device with a holographic diffuser which has at least first and second adjacent sets of holographic regions which overlap each other and wherein the first and second holographic regions...
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6141123 |
Hologram and process for producing hologram
There is provided a hologram with excellent heat resistance. The hologram comprises a hologram film (10) in which a diffraction grating has been recorded, a substrate (11) situated on one side of...
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6111670 |
Hologram device and method for producing the same
A hologram of an increased size using a single color laser, capable of executing a full color regeneration in a desired view angle and a method for producing the hologram. A plurality of...
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6097514 |
Hologram replicating method, and volume hologram
The invention relates to a method for replicating a volume hologram having an image of a scattering object recorded therein according to a hologram replicating technique, wherein the diffraction 13...
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6055174 |
Solid state holographic memory
A method and a compact apparatus to read shift-multiplexed holograms on a storage medium without the need for any lenses, and without the need for moving the storage medium. The shift-multiplexed...
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6031643 |
Method for holographic storage
The present invention is a method for optical data storage which enhances the contrast between ON and OFF pixels. The method comprises writing a two-dimensional image comprising a plurality of...
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5949559 |
Method and apparatus for creating holographic stereogram
A method and an apparatus for creating a holographic stereogram are provided for canceling noises localized to infinity and offering a high-quality hologram. The creating method is executed to...
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5949557 |
Total internal reflection holography method and apparatus for lithography on 3-D spherical shaped integrated circuit
A photolithograhic method and apparatus for exposure of a spherical shaped semiconductor substrate according to a mask pattern of a primary spherical object mask in the manufacture of a spherical...
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