Did You Know...
...In 1790, the cost to obtain a patent was between $4 and $5.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7352340 | Display system having a three-dimensional convex display surface A display system has a display surface having a three-dimensional convex shape. A projection system projects an object field onto a continuous image field located on the interior of the display surface the display surface is extensive in its coverage, for example su... | 04/01/2008 |
| 7281807 | Positionable projection display devices Described herein are devices that provide projection-type video output in a portable and flexible design. The design includes a projection chamber, a base, and an interface that permits relative positioning between the projection chamber and base. The base maintains... | 10/16/2007 |
| 7245280 | Laser display system Laser display system having at least more than two lasers, and a display panel for receiving an electrical picture signal, and regulating a quantity of light from the laser to form an image based on the electrical picture signal, including a light superimposer of op... | 07/17/2007 |
| 6945652 | Projection display device Light beams having different wavelengths emitted from red and blue semiconductor lasers and a laser diode pumped green solid-state laser are incident on respectively different surfaces of a color combining element and are overlaid on a single light path. Multiple be... | 09/20/2005 |
| 6912017 | Display device for displaying digital input image data using different filter segments for the lower and higher order bits There is disclosed a display device using a color wheel having a color filter Cw, in addition to normal color filters corresponding to the three primary colors. The filter Cw has almost flat spectral transmission characteristics. Brightness information included in a... | 06/28/2005 |
| 6903862 | Ultraviolet acoustooptic device and optical imaging apparatus using the same The present invention provides an ultraviolet acoustooptic device including: a radio-frequency signal input part; a transducer unit for converting a radio-frequency signal into a mechanical vibration; and an acoustooptic medium whose optical characteristic varies ac... | 06/07/2005 |
| 6882374 | Image projection system A DMD (4) as a image display device time divisionally displays channel images formed by separating an image into RGB channels. A white light emitted from a xenon lamp (1) is separated, by an acousto-optical element (3), into spectal components. ... | 04/19/2005 |
| 6636339 | Optical scanner, laser image projector adopting the optical scanner, and method of driving the laser image projector An optical scanner, a laser image projector using the optical scanner, and a method of driving the laser image projector are provided. The optical scanner includes: a base substrate; a plurality of parallel stationary comb electrodes arranged on the base ... | 10/21/2003 |
| 6483556 | Laser video display system and method A full color, pulsed laser video system having solid state red (R), green (G) and blue (B) lasers (10, 12, 14) as a source, and with a projection screen having a two-channel image (24) for the screen, and with optical fiber remote image delivery (30).... | 11/19/2002 |
| 6426781 | Laser video projector A laser video projector for modulating light from a laser light source by an acousto-optic modulator (AOM) according to a video signal and projecting video information to a screen using a scanner is provided. The laser video projector includes a light sou... | 07/30/2002 |
| 6188507 | Variable acousto-optic spectrum projector and method of operation A variable acousto-optic spectrum projector is disclosed. The invention may include a radiation source, an entrance slit, a lens or mirror, a Bragg cell, an arbitrary function generator for driving a transducer of the Bragg cell, another lens or mirror, a... | 02/13/2001 |
| 6046724 | Method and apparatus for conversion of sound signals into light Method and apparatus for the conversion of sound waves to electromagnetic wave forms, preferably light, whereby sound waves are converted to an electrical signal and processed by a number of filters, the distribution between the filters being a result of ... | 04/04/2000 |
| 5959702 | Lensless video projector A video projector employs an acousto-optic deflector for moving a horizontal line of pixels vertically to form an image on a remote screen. Because the pixel images are formed from parallel beams, rather than by reimaging a line of pixel images on a verti... | 09/28/1999 |
| 5828424 | Process and apparatus for generating at least three laser beams of different wavelength for the display of color video pictures In a process for generating at least three laser beams of different wavelengths for displaying color video pictures, a pulsed laser is used to generate light. The light output of the pulsed laser is released in a pulse and is introduced into a medium with... | 10/27/1998 |
| 5546139 | Moving imagery projection system A projection system for projecting computergraphic images onto a domed or spherical viewing surface. An intense beam of coherent light is color and intensity modulated and deflected in a pair of cartesian axes prior to being projected through a wide angle... | 08/13/1996 |
| 5410371 | Display system employing acoustro-optic tunable filter An acousto-optic tunable filter (AOTF) is employed to generate a display by driving the AOTF with an RF electrical signal comprising modulated red, green, and blue video scan line signals and scanning the AOTF with a linearly polarized, pulsed light beam,... | 04/25/1995 |
| 5136426 | Light projection apparatus A high efficiency light projection apparatus using lasers that optimize all available power output from two lasers to provide a balanced color display is disclosed. The light projection apparatus comprises two laser and light separation means to produce s... | 08/04/1992 |
| 4992858 | Laser beam scanning apparatus A laser beam scanning apparatus deflects laser beams of different wavelengths to scan an object or medium in at least one direction using an acousto-optic deflector. The angle of scanning deflection is dependent on the frequency of the drive signal applie... | 02/12/1991 |
| 4851918 | Sequential plane projection by laser video projector A video imaging system is disclosed. The system is responsive to electrical signals introduced into it, which electrical signals represent an image. The system includes an acoustic-optical cell, the cell including an anisotropic medium for sound transmitt... | 07/25/1989 |
| 4835601 | Color video generating apparatus using acousto-optical deflector Disclosed is a laser beam scanning system having a laser source for producing a plurality of laser beams each having a different wavelength which are deflected by an acousto-optical deflector to scan an object in at least one direction to produce a video ... | 05/30/1989 |
| 4833528 | Color video projecting apparatus using acousto-optical deflector Disclosed is a laser beam scanning system which includes a plurality of laser sources each of which produces a laser beam having a different wavelength. The laser beam component is intensity-modulated with a corresponding color video signal and deflected ... | 05/23/1989 |
| 4145712 | Laser-elimination of mode beating A laser system designed to minimize mode beating by splitting an incident laser beam into two approximately equal components, transmitting the components along separate paths of unequal lengths and recombining the components at a beam combiner to form the... | 03/20/1979 |
| 4003080 | Large screen video display systems and methods therefor A large screen display system for video modulated collimated light provides superior contrast and brightness, in a shallow depth configuration if desired. A single modulated laser beam which may have different color components is raster scanned, defining ... | 01/11/1977 |
