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8983814 Laser device with a convergent reflector topology  
A laser device, having an optical cavity containing a gain medium, a total reflectance reflector positioned within the optical cavity, and a partial reflectance reflector positioned within the...
8960960 Illumination beam shaping system  
The present invention provides an illumination beam shaping system, which enables the emergent surface of a lighting system of light excitation chips to emit a light beam of uniform illumination...
8956786 Volume hologram medium  
The invention is concerned with a volume hologram medium obtained by multiple recording of holograms, which is improved in terms of just only security for forgery prevention but also aesthetics. A...
8848271 Apparatus and method for high-speed phase shifting for interferometric measurement systems  
Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a...
8736675 Multi-core processor architecture for active autostereoscopic emissive displays  
In one implementation, a system includes a multi-core processor and an optical display with a plurality of hogels. Each hogel is configured to radiate light in a plurality of directions, with...
8699111 Apparatus and method for high-speed phase shifting for interferometric measurement systems  
Described are a method and apparatus for high-speed phase shifting of an optical beam. A transparent plate having regions of different optical thickness is illuminated by an optical beam along a...
8630825 Method to determine a convergent reflector topology  
A method of determining the surface topology of a reflector for convergence of a beam incident thereupon.
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...
8472095 True three dimensional imagery and use thereof  
A method for producing true three dimension imagery includes positioning an object to be imaged and directing imaging laser beams to impinge upon the object. Splitting the imaging laser beams...
8444271 System and method for reducing visible speckle in a projection visual display system  
The disclosure provides an apparatus for reducing speckle in a projection visual display (PVD) system, a method of reducing visible speckle in a PVD system and a PVD system incorporating the...
8427725 Light modulating device  
The present invention relates to a light modulating device, comprising a SLM and a pixelated optical element, in which a group of at least two adjacent pixels of the SLM in combination with a...
8339695 Controllable illumination device  
The invention relates to a controllable illumination device for an autostereoscopic or holographic display, which illumination device contains an illumination matrix of primary light sources...
8272750 Projection-type image display apparatus  
A projection-type image display apparatus that projects an image onto a screen and includes a laser light source, an optical engine, a projection lens, and a control unit. The laser light source...
8264756 Device for recording holograms  
An apparatus for recording holograms on an optical medium, in particular on an optically addressable spatial light modulation device is disclosed. For this purpose, the apparatus comprises an...
8064114 Illumination 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...
8031403 System and method for reducing visible speckle in a projection visual display system  
The invention provides an apparatus for reducing speckle in a projection visual display (PVD) system, a method of reducing visible speckle in a PVD system and a PVD system incorporating the method...
8025410 Projection device providing reduced speckle contrast  
A projection device includes a diffuser and a light source system. The light source system includes a light source, a dichroic element, an actuator, and a reflector. The light source generates a...
7995257 Holographic storage medium, recording and/or reproducing apparatus, and recording and/or reproducing method  
A holographic storage medium includes a hologram including data recorded in a plurality of pages in a superimposed fashion by interference of a signal beam and a reference beam, and an additional...
7889407 Method for producing a duplicate hologram recording medium, apparatus for producing a duplication master, apparatus for producing a duplicate hologram recording medium, and duplication master  
An apparatus for producing a duplicate hologram recording medium includes: a positioning section configured to place the duplication master and the duplicate hologram recording medium at...
7767955 Image detecting apparatus having an illumination system and a sensing system  
An image detecting apparatus includes an illumination system and a sensing system. The illumination system is for providing a light beam to a working surface to generate a reflected light beam by...
7697178 Recording medium, reproducing apparatus, and reproducing method  
A recording medium records therein image data for distributing contents as element holograms with interference fringes generated by interference between an object beam representing the image data...
7675664 Recording medium, reproducing apparatus, and reproducing method  
A recording medium records therein image data for distributing contents as element holograms with interference fringes generated by interference between an object beam representing the image data...
7636171 Storage media monitoring method for archive management  
A method is provided for monitoring degradation of a data storage medium. Multiple reactive elements are provided in the data storage medium. Properties of each one of these elements is...
7633661 Hologram recording apparatus and hologram recording method  
A hologram recording apparatus includes a light source for irradiating coherent light, light separator for separating the coherent light into light for reference beam and light for signal beam,...
7557970 Hologram recording method, hologram recording device, hologram playback method, and optical recording medium  
A hologram recording method, which records signal light onto an optical recording medium as a hologram, includes: placing a signal light region, which generates signal light, and a reference light...
7545279 Condition-analyzing device  
A condition analysis apparatus capable of grasping the condition of an object easily and accurately is provided. The condition analysis apparatus 1 includes a three-dimensional sensor 10 for...
7483189 Holographic memory medium, holographic memory device and holographic recording device  
Even when a tilt error is caused in a holographic memory in a direction perpendicular to a surface including optical axes of a signal beam and a reference beam, the signal beam and the reference...
7477433 Hologram recording method, optical recording medium, and hologram-recording device  
A hologram-recording method including recording a reflection-type volume hologram onto an optical recording medium by irradiating the optical recording medium with a modulated beam obtained by...
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) has...
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...
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...
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...
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...
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...
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...
6999071 Method and apparatus for displaying 3d images  
The invention relates to a method for displaying three-dimensional images. In the method light beams (Le) are associated to several different screen points (P) of a screen (20). The light beams...
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...
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...
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),...
6914918 Optical device, laser beam source, laser apparatus and method of producing optical device  
After forming domain inverted layers 3 in an LiTaO3 substrate 1, an optical waveguide is formed. By performing low-temperature annealing for the optical wavelength conversion element thus formed,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...

Matches 1 - 50 out of 198 1 2 3 4 >