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Class 359/15 - Using a hologram as an optical element


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein a holographic equivalent to an ordinary
No. of patents: 1257
Last issue date: 02/21/2012


1                      
NumberTitleIssue Date
8120828Reflective optical system, tracking system and holographic projection system and method
The invention relates to an optical reflection system with a reflection element for reflecting reconstruction light waves, an entry-side focal point, from which the reconstruction light waves come when they hit the reflection element, and an exit-side focal point, t...
02/21/2012
8081360Light-collecting device, light-collecting device array, exposure device and image-forming apparatus
A light-collecting device is provided, a light-collecting device, including: a first volume hologram recorded in a hologram recording layer by interference of a first spherical wave and a planar wave, the first spherical wave passing through a light path of diffused...
12/20/2011
8072661Computer generated hologram, exposure apparatus, and device fabrication method
The present invention provides a computer generated hologram which forms a light intensity distribution on a predetermined plane by giving a phase distribution to a wavefront of incident light, comprising an anisotropic layer whose refractive index with respect to l...
12/06/2011
8068279Optical system of an illumination device of a projection exposure apparatus
The disclosure relates to an optical system of an illumination device of a microlithographic projection exposure apparatus, including at least one first light-conductance-increasing element having a plurality of diffractively or refractively beam-deflecting structur...
11/29/2011
8064114Illumination device and method for illuminating uniformly an image generating micro display
An illumination device for uniformly illuminating an image generating micro-display that includes a coherent light source, a beam shaping and speckle reduction device located on an optical path between said coherent light source and said image generating micro-displ...
11/22/2011
8059321Volumetric imaging of holographic optical traps
A method and system for manipulating object using a three dimensional optical trap configuration. By use of selected hologram on optical strap can be configured as a preselected three dimensional configuration for a variety of complex uses. The system can include va...
11/15/2011
8014050Agile holographic optical phased array device and applications
A device that provides light beam switching, agile steering of the light beam over a range of angles, and generation of arbitrary wavefront shapes with high spatial and temporal resolution. The agile device can include a volume diffractive structure comprising Bragg...
09/06/2011
7924485Color dispersion compensated holographic light guide plate
A holographic light guide plate has a transparent substrate and a plurality of diffraction patterns formed thereon. The diffraction patterns are arranged on one of a top surface and a bottom surface of the transparent substrate. The diffraction patterns diffract lig...
04/12/2011
7920310Complex objective lens for an optical head and optical information apparatus
A complex objective lens composed of a hologram and an objective lens, capable of realizing stable and high-precision compatible reproducing/recording of a BD with a base thickness of about 0.1 mm for a blue light beam (wavelength λ1) and a DVD with a base t...
04/05/2011
7880945Hologram projection screen and its manufacturing method and system as well as its applications
A method for manufacturing a hologram projection screen includes the steps of: 1) recording hologram lens information on a photoresist plate; 2) metalizing the photoresist plate that has been exposed, to produce a master nickel plate of a hologram lens array through...
02/01/2011
7839549Three-dimensional autostereoscopic display and method for reducing crosstalk in three-dimensional displays and in other similar electro-optical devices
This Patent Application describes invention in form of a design of three-dimensional (3D) autostereoscopic displays and other similar electro-optical devices, and also describes a method for reducing crosstalk in said 3D displays and in other similar electro-optical...
11/23/2010
7839551Holographic microscopy of holographically trapped three-dimensional structures
A method and system for performing three-dimensional holographic microscopy of an optically trapped structure. The method and system use an inverted optical microscope, a laser source which generates a trapping laser beam wherein the laser beam is focused by an obje...
11/23/2010
7839550Volume holographic filter with broad acceptance angle and narrow spectral bandwidth
A narrowband filter with a wide acceptance angle which utilizes two holographic filter elements connected in series. The filter blocks light outside of a narrow spectral band of interest, while enabling light to be seen over a wide range of angles incident on the fi...
11/23/2010
7835051Volumetric imaging of holographic optical traps
A method and system for manipulating object using a three dimensional optical trap configuration. By use of selected hologram on optical strap can be configured as a preselected three dimensional configuration for a variety of complex uses. The system can include va...
11/16/2010
7804632Display device using 1 dimensional hologram
An image display device using a one-dimensional hologram is disclosed. The image display device includes a light deflection unit which deflects a parallel light ray and adjusts the incident angle of a reconstructing light in sequence, and a one-dimensional hologram ...
09/28/2010
7768685Hologram optical element and surface light source device using the hologram optical element
A hologram optical element having a thin form and a high degree of light transmittance, moreover that provides superior handling ease, as well as a surface light source device employing this hologram optical element. The angle at which light can be bent in this holo...
08/03/2010
7764413General diffractive optics method for expanding an exit pupil
An exit pupil extender with one input optical element and two exit optical elements disposed on different sides of the input optical element. The exit pupil extender also comprises two intermediate diffractive optical couplers, each disposed between the input optica...
07/27/2010
7710624Controlling the transmission amplitude profile of a coherent light beam in a holographic memory system
Holographic systems which shape coherent light beams are disclosed. These holographic systems may beam-shaping devices positioned in the path of coherent light beams to shape a coherent light beam into an essentially diffraction noise free coherent light beam of pre...
05/04/2010
7667882Fourier transform volume holographic spectrometer
One embodiment of a system includes a volume hologram for dispersing a general diffuse beam of light provided as input; a detector for receiving and detecting light dispersed by the volume hologram; and a Fourier transforming lens for forming the Fourier transform o...
02/23/2010
7649660High throughput holographic spectrometer using the multiplexed hologram
A sophisticated volume hologram for dispersing an incident optical signal with uniform spectrum over an input plane to an output pattern with non-uniform spatial-spectral information, where the sophisticated volume hologram includes a plurality of holograms that map...
01/19/2010
7583423Switchable polymer-dispersed liquid crystal optical elements
Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches...
09/01/2009
7570404Multi-state optical switch and combiner for use in a light engine and image presentation device using the same
An image presentation device (100) incorporates an optical combiner (130) that utilizes a multi-state optical switch (131, 137) for use with a plurality of colored light sources (122, 124,126). The switch (131,137) includes an elec...
08/04/2009
7570405Optimizing performance parameters for switchable polymer dispersed liquid crystal optical elements
Described herein are the materials, mechanisms and procedures for optimizing various performance parameters of HPDLC optical devices in order to meet differing performance requirements. These optimization tailoring techniques include control and independent optimiza...
08/04/2009
7548359Double-wavelength light source unit and optical head device having four diffraction gratings
A double-wavelength light source unit capable of stable signal detection, is realized. The double-wavelength light source unit comprises a double-wavelength light source, a photodetector and a double-wavelength diffraction element, wherein the double-waveleng...
06/16/2009
7483190Method 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 or a continuously varying filter frequency imprinted into a filter material, such as Lithium Niobate or gla...
01/27/2009
7457016Optical system for processing CD, DVD and holographic digital data
An optical system capable of selectively processing CD, DVD and holographic digital data is provided. The system includes a beam generation unit providing a linearly polarized light beam; a beam splitter for respectively reflecting and transmitting a first and a sec...
11/25/2008
7453612Optical device, and virtual image display
An optical device including an optical waveguide upon which a group of parallel light beams different in traveling direction from each other are incident and from which the group of parallel light beams go out after propagated by repeated total reflection through it...
11/18/2008
7446915Diffuse reflector and method
A diffuse reflector comprises a substrate (20) having an asymmetric, reflective, periodic surface relief microstructure formed such that, under illumination by a multiplicity of wavelengths in a plane of incidence or illumination lying along the axis of asymm...
11/04/2008
7443587DOE-based systems and devices for producing laser beams having modified beam characteristics
Novel methods are disclosed for designing and constructing miniature optical systems and devices employing light diffractive optical elements (DOEs) for modifying the size and shape of laser beams produced from a commercial-grade laser diodes, over an extended range...
10/28/2008
7443553Holographic sensors and their production
An array of discrete sensors disposed on a substrate, each sensor comprising a holographic support medium and a hologram disposed throughout the volume of the medium, whereby interaction with an analyte results in a variation of a property of the medium. ...
10/28/2008
7440153Backlight unit for flat panel display and flat panel display apparatus having the same
A backlight unit for a flat panel display and a flat panel display apparatus having the same. The backlight unit for a flat panel display includes a light source emitting light, a light guide panel having an incident surface facing the light source and totally refle...
10/21/2008
7436560Display device for a vehicle
A display device for a vehicle includes a transparent window with a light emission layer intended to separate the interior of the vehicle for emitting visible light when light is beamed onto the light emission layer, a light source for beaming light onto the window,...
10/14/2008
7432487Device for correcting output of optical pickup
Light receiving elements for receiving a + one-dimensional light divided into four are arranged in the vicinity of a light receiving part for receiving the zero-dimensional light. Some light receiving elements configure the light receiving elements of a first group ...
10/07/2008
7433105Decorative film, carton, and method of making
A film having a Fresnel lens is placed adjacent a design to create a three-dimensional image. The film can be used separately or laminated to a substrate to create enclosures such as cartons, dispensers, or containers. ...
10/07/2008
7425951Three-dimensional image display apparatus, method of distributing elemental images to the display apparatus, and method of displaying three-dimensional image on the display apparatus
An apparatus is provided with a display unit and a optical filter. The unit has pixels arranged in a matrix form, which are grouped into a first group and second groups to display two-dimensional image information constituting elemental images, the image information...
09/16/2008
7416306Laser 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) has reflection characteristics of reflecting, ...
08/26/2008
7418170Optical device and virtual image display device
A virtual image display device is provided which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide (13) to guide, by internal total refl...
08/26/2008
7416818Switchable volume hologram materials and devices
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a ne...
08/26/2008
7413678Electrically switchable polymer-dispersed liquid crystal materials
A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a ne...
08/19/2008
7400431Method for encoding video holograms for holographically reconstructing a scene
A method and a device for encoding and reconstructing computer-generated video holograms using a conventional LC display: it provides holographic reconstruction of three-dimensional scenes using electronically controllable pixel in a holographic array (3) wit...
07/15/2008
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