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9025227 Solar light concentration plate  
A solar light concentration plate comprises a plurality of holograms diffracting incident light wherein each of the plurality of the holograms has a thickness, at least one intermediate light...
8998420 Optical element, light source device, and projection-type display device  
A hologram layer (13) is irradiated by light from an optical element (10). The hologram layer (13) is provided with a first hologram (14) that diffracts in a predetermined direction, from among...
8982439 Solar light concentration plate  
A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively...
8976449 Identification medium and method for identification thereof  
An identification medium, in which a pattern is clearly altered in observation through a right-handed circularly polarizing filter and observation through a left-handed circularly polarizing...
8970953 Identification medium and identification method therefor  
An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter. A cholesteric liquid...
8965152 Waveguides  
A projection display 210 arranged to display an image to an observer 212 use waveguide techniques to generate a display defining a large exit pupil at the point of the observer 212 and a large...
8941904 Hologram sheet and hologram observation sheet using same, and blinding device  
A main object of the present invention is to provide a hologram observation sheet with a transmission type hologram formed integrally with other members, to be attached with various members for...
8921763 Extended and knotted optical traps in three dimensions  
The present invention is directed toward a system and method for projecting holographic optical traps whose intensity maxima are extended along specified paths in three dimensions with specified...
8922857 Optical solenoid beams  
Optical solenoid beams, diffractionless solutions of the Helmholtz equation whose diffraction -limited in-plane intensity peak spirals around the optical axis, and whose wavefronts carry an...
8902484 Holographic brightness enhancement film  
This disclosure provides systems, methods and apparatus, including a display device that includes an overlying holographic film. In one aspect, the holographic film includes a hologram that is...
8903207 System for and method of extending vertical field of view in head up display utilizing a waveguide combiner  
A Head Up Display can be utilized to find light from an energy source. The Head Up Display includes a first waveguide having a first input coupler and a first output coupler. The Head Up Display...
8894210 Optical element, light source device, and projection-type display device  
An optical element is provided with: first polarization-separation layer (13) that is laminated on first surface (12b) of light guide body (12) and that, of the light incident from light guide...
8878759 Apparatus and method for displaying a video image  
A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an...
8873119 System of displaying digital hologram based on projection and method thereof  
A system and a method perform buoyance of a 3D hologram image on a hologram display screen in a projection mode. A system of displaying a digital hologram includes: a composite hologram unit...
8867113 Laser processing device and laser processing method  
A laser processing device includes a laser light source, a spatial light modulator, a control section, and a condensing optical system. The spatial light modulator, presents a hologram for...
8861057 Speckle-reduced laser illumination device  
Proposed is a speckle-reduced laser illumination device that may be used in optical microscopy, machine vision systems with laser illumination, fine optical metrology, etc. The device comprises a...
8857779 Holder for a holographic grating  
An adjustable holder (1) for a concave holographic grating (2) for enabling the correct positioning of the grating vis-à-vis a light entrance port (15) and a light exit port (20), characterized...
8861055 Security device  
A security device having a lenticular device that includes an array of lenticular focusing elements located over a corresponding array of sets of image strips such that at different viewing...
8854410 Exposure device and image forming apparatus  
An exposure device includes at least one light emitting element that emits light in a normal direction of the substrate; at least one hologram element that is recorded on a recording layer...
8854710 Method of laser illumination with reduced speckling  
Proposed is a method of laser illumination with reduced speckling for in optical microscopy, machine vision systems with laser illumination, fine optical metrology, etc. The method comprises...
8848267 Illuminating device using coherent light source  
A laser beam (L50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45) where an image (35) of a scatter plate is recorded as a hologram by using...
8817350 Optical displays  
An apparatus for providing an optical display includes an optical substrate for propagating light received from a light source, a first set of one or more switchable diffractive elements in the...
8810878 Optical device and virtual image display  
An optical device includes: a light guide plate receiving, for each of N types of wavelength bands, a plurality of parallel light beams with different incident angles each corresponding to view...
8798425 Decoupled holographic film and diffuser  
In various embodiments described herein, a display device includes a front illumination device that comprises a light guide disposed forward of an array of display elements, such as an array of...
8786924 Grating for tuning a light source  
A system includes a light source and a grating cube. The grating cube includes a transmission volume holographic grating positioned between two prisms. The transmission volume holographic grating...
8780426 Exposure apparatus and image forming apparatus having hologram elements  
An exposing device including a light emitting element array of light emitting elements arrayed in a row along a predetermined first direction; a hologram recording layer in which hologram elements...
8773743 Optically variable security device and method  
A security device comprising at least first and second superposed optically variable effect generating structures (3-5, 31-51), each having a surface relief microstructure, the second optically...
8767216 Holographically illuminated imaging devices  
Embodiments of the present invention relate to holographically illuminated imaging devices including a holographic element for transforming an illumination beam into a focal array of light spots,...
8743442 Image display device  
An image display device includes an image forming device, collimating optical system, and optical device, with the optical device including a light guide plate, first diffraction grating member...
8736932 Incoherent beam combining of parallel beams with optical path compensation using real time holography  
A system for path compensation of multiple incoherent optical beams incorporates an optical element combining a plurality of incoherent beams to an aperture by angle using carrier frequency tilt...
8730321 Automatic alignment of a contrast enhancement system  
An apparatus and method for insuring the proper alignment of a detected vein pattern and a projected vein pattern are disclosed. The apparatus enhances the visual appearance of veins so that an...
8727543 Projection type image display apparatus  
A laser beam generated by a laser light source is reflected by a light beam scanning device and irradiated onto a hologram recording medium. On the hologram recording medium, an image of a scatter...
8657439 Continuous adjustable 3Deeps filter spectacles for optimized 3Deeps stereoscopic viewing and its control method and means  
Continuous Adjustable Pulfrich Filter Spectacles are provided with lenses with continuously changeable optical densities, so that viewing of 2D movies is optimized for visualization in natural 3D....
8654048 Apparatus and method for displaying a video image  
A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an...
8654171 Exposure device and image forming device  
There is provided an exposure device including: a light-emitting element array at which a plurality of light-emitting elements, that emit light that passes through an optical path of diffused...
8634120 Apparatus for condensing light from multiple sources using Bragg gratings  
A color sequential illumination device including in series: first and second light sources; a condenser lens; and a grating device. The grating device includes at least one Bragg grating. The...
8625184 Optical exposure apparatus and systems  
An exposure apparatus includes a substrate in which plural light-emitting devices are arrayed one-dimensionally or two-dimensionally; and a hologram recording layer that is disposed on the...
8581965 Means and facility for 3D imaging  
A means for 3D imaging takes two plane pictures of an object in different angles and respectively projects the correspondent images of the object toward users' eyes. Accordingly, the visual data...
8537445 Transmission type optical element and anti-forgery volume hologram  
A transmission type optical element comprising a first hologram having a first surface and a second surfaces and a second hologram having a third surface and a fourth surface. The first surface of...
8531747 Hologram, hologram data generation method, and exposure apparatus  
The present invention provides a hologram which forms a light intensity distribution on a predetermined plane by using an incident light. The hologram includes a plurality of cells configured to...
8526088 Device for holographic reconstruction of three-dimensional scenes  
A device for holographic reconstruction of three-dimensional scenes includes optical focusing means which directs sufficiently coherent light from light means to the eyes of at least one observer...
8508505 Virtual optical input device for providing various types of interfaces and method of controlling the same  
Provided are a virtual optical input device and a method of controlling the same. In the method, a portion of an input means such as a finger, and a portion of a shadow of the input means...
8502132 Manipulation of objects in potential energy landscapes  
A method for manipulating a plurality of objects. The method includes the steps of providing a shaping source, applying the shaping source to create a spatially symmetric potential energy...
8498034 Security element and method for producing a security element  
A method for producing a security element (55) and a security element (55) in the form of a multilayered film body having a top side facing the observer. The security element (55) has a volume...
8493662 Waveguides  
A waveguide 60 formed of material 62 allows propagation of image bearing light along a light pathway 64 by total internal reflection of the image bearing light. The layer of material 62 is a light...
8477424 Diffractive combiner for multicolor and monochrome display, method of manufacture and head-up display device using same  
A method for producing a single-layer diffractive combiner for a head-up display having a projection unit with n light sources of λi wavelength(s), where i=1 to n sending light towards the...
8472094 Volumetric is imaging of a 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...
8459801 Three-dimensional image projector with a projection image forming disc with a hologram recording medium formed along a disc-shaped glass substrate  
An object of the present invention is to display a highly reproducible three-dimensional image in response to changes in the viewer's position and to easily realize the miniaturization of the...
8451428 Computer generated hologram, exposure apparatus and device fabrication method  
The present invention provides a computer generated hologram including a plurality of anisotropic cells having different refractive indices with respect to linearly polarized light in a first...
8441907 Complex objective lens including saw-tooth diffractive element for using on blue, red and infrared lights  
In an optical head device which performs recording/reading of data in/from a high-density optical disc using an objective lens with a large NA, a saw-tooth shape diffraction element is used for...