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| Number | Title | Issue Date |
| 7760273 | Image processing apparatus and image processing method An image processing apparatus including a displaying part, a light source generating light and a display driving part displaying an image on the displaying part by controlling the intensity of the light generated by the light source on the basis of one of a pluralit... | 07/20/2010 |
| 7400458 | Imaging optics with wavelength dependent aperture stop An imaging system includes a wavelength dependent aperture stop, which transmits light with different ranges of wavelengths through apertures of different diameters. Thus, different colored light will have different F-stops, which can be selected based on the power ... | 07/15/2008 |
| 7350927 | Image display apparatus The present invention includes a reflection portion which light-modulates three primary color lights by three rectangular reflective liquid crystal light modulators, then color-combine the light-modulated lights and reflects the resultant light; and a projection len... | 04/01/2008 |
| 7324169 | Projection optical system, projection television, and method of manufacturing lens included in projection optical system Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing... | 01/29/2008 |
| 7316482 | Reflecting mirror and projection image display apparatus using the same The present invention is directed to the provision of a reflecting mirror that suppresses decreases in the resolution performance and contrast performance by decreasing the mean surface roughness. In a projection type image display apparatus including a projector le... | 01/08/2008 |
| 7300162 | Projection display In order to minimize light diffraction along the direction of switching and more particularly light diffraction into the acceptance cone of the collection optics, in the present invention, micromirrors are provided which are not rectangular. Also, in order to minimi... | 11/27/2007 |
| 7277090 | Method and apparatus for image and video display The present invention relates to a display configured to display images that includes multiple display elements capable of controlling light within a visible-light spectrum. The display elements are arranged over a display surface of the display. The display also in... | 10/02/2007 |
| 7196687 | Swept illumination to reduce LCD lag in front and rear projection displays Methods for illuminating the display area of a liquid crystal panel (13) are provided. Illumination light (17) is compressed into a stripe which is scanned across the display area in synchronization with the display's refresh cycle. In particular, the ... | 03/27/2007 |
| 7157844 | Cathode ray tube provided with a faceplate having a convex outer surface and a lens assembly attached therein In a projection cathode ray tube device in which a projection cathode ray tube and a projection lens assembly are coupled and held by a coupler, superior focus characteristics and high resolution are realized by eliminating the deviation between the center of the ph... | 01/02/2007 |
| 7154567 | Projection lens regulator for rear projection television A projection lens regulator for a projection television includes a base, a barrel and an immobilizing hoop. The base has an annular wall, a slope guide slot at the annular wall, and a resilient flexible sheet defined by a pair of incisions at an upper side of the an... | 12/26/2006 |
| 7154113 | Techniques for wafer prealignment and sensing edge position A prealignment sensor comprising a frame fixed to a base and having a U-shape when viewed from its side. A light source is attached to a lower part of the flame. A convex lens is attached to a lower part of an inside of the frame by which diffused light of the light... | 12/26/2006 |
| 7142257 | Laser projection system Laser projection system suitable for commercial motion picture theaters and other large screen venues, including home theater, uses optical fibers to project modulated laser beams for simultaneously raster scanning multiple lines on screen. Emitting ends of optical ... | 11/28/2006 |
| 7133084 | Lens systems for projection televisions Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one o... | 11/07/2006 |
| 7093945 | Imaging apparatus for endoscopes An imaging apparatus for endoscopes has an objective optical system forming an image of an object and a holding frame retaining the objective optical system. The objective optical system is provided with optical filters which reduce a transmittance in a particular w... | 08/22/2006 |
| 7081928 | Optical system for full color, video projector using single light valve with plural sub-pixel reflectors A full color video projector system using a light source and a single light valve. The output of the light source passes through a condenser lens. The lens is directed toward a splayed array of red, green, and blue dichroic reflector color filters. The reflected thr... | 07/25/2006 |
| 7075702 | Micromirror and post arrangements on substrates A micromirror of a micromirror array of a spatial light modulator used in display systems comprises a mirror plate attached to a hinge that is supported by two posts formed on a substrate. Also the mirror plate is operable to rotate along a rotation axis that is par... | 07/11/2006 |
| 7071908 | Digital backplane The present invention provides a various methods, systems and devices for controlling light modulating elements and/or spatial light modulators. In some embodiments of the present invention, a recursive feedback method is used to control light modulating elements an... | 07/04/2006 |
| 7040536 | Electronic shelf label systems and methods An electronic shelf label including an LCD display, a housing including a protective at least partially transparent cover layer disposed over the LCD display and in spaced relationship thereto, and an at least partially transparent intermediate layer formed over the... | 05/09/2006 |
| 7036938 | Pen projection display The projection display includes a light projector unit for generating and projecting light, an oscillator unit for oscillating light projected from the light projector unit, and a frequency generation and modulation unit. The frequency generation and modulation unit... | 05/02/2006 |
| 7019793 | Lens systems for projection televisions Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one o... | 03/28/2006 |
| 6992837 | Hybrid lens and projection optical system including the same A hybrid lens and a projection optical system having the hybrid lens are provided. The projection optical system includes a hybrid lens that is positioned along an optical path between a fluorescent surface and a screen onto which light emitted from the fluorescent ... | 01/31/2006 |
| 6987546 | Projection type image display apparatus An image display technique which projects R, G, and B light rays on a display device to form an image with an increased utilization ratio of light and an increased screen brightness. R, G, and B light rays as a result of color separation are reflected by plural refl... | 01/17/2006 |
| 6967796 | Optical element and optical system A diffractive optical element, which is used for an optical system of an exposure apparatus, includes a light-shielding member composed of a laminated layer of Cr oxide and Cr at a periphery of an effective area. ... | 11/22/2005 |
| 6943850 | Optical apparatus and projection type display apparatus for reducing a physical distance between a light source and a display An optical apparatus for irradiating light emitted from a light source onto a predetermined object, comprising a polarized light separating optical element for passing a first of two linearly polarized light beams polarized in directions perpendicular to each other ... | 09/13/2005 |
| 6940647 | Apparatus and method for controlling polarization of an optical signal In one aspect of the invention, a polarization controller includes a first polarization beam splitter operable to receive an input optical signal having an input state of polarization and to separate the signal into a first and a second principal mode of polarizatio... | 09/06/2005 |
| 6870580 | Illumination optical system having a mirror with a curved surface having rotational symmetry about a predetermined axis A projection type image display apparatus comprises a light source unit; an integrator unit for mixing luminous fluxes emitted from the light source unit so as to homogenize their light quantity distribution; a curved mirror for bending the optical path of luminous ... | 03/22/2005 |
| 6859239 | Projection system with folded optical path A high throughput, compact image display apparatus comprises a source unit to generate a spatially uniform light beam that propagates along a first beam path in a first direction. The image display apparatus also comprises an imaging unit to collect and focus the li... | 02/22/2005 |
| 6833880 | Bracket for CRT An enclosure for a projection television set is provided that includes an upper compartment to house a mirror and a screen, and a lower compartment attached to the upper compartment. The lower compartment preferably includes a front panel, a rear panel, and a plural... | 12/21/2004 |
| 6791629 | Lens systems for projection televisions Projection lens systems for use with cathode ray tube (CRT) projection televisions are provided which have positive first lens units (U1) and negative second lens units (U2) where the negative second lens units are customized in terms of at least one o... | 09/14/2004 |
| 6784946 | Assembly, in which light from a light source is directed onto a surface An arrangement in which the light emitted by a source of light (44) is directed by means of illumination optics (12) onto a surface (25) by which an image can be generated that can be projected by means of projection optics (4), onto a sc... | 08/31/2004 |
| RE38488 | Optical system including a reflecting polarizer for a rear projection picture display apparatus An optical system for a rear projection picture display has reduced size while maintaining screen size. Two plane mirrors are provided along a light path between a picture display unit and a screen. The first plane mirror at a projection lens side is made of a refle... | 04/06/2004 |
| 6621530 | Projection televisions with mirrors incident on holographic screens A projection television has a screen with a three dimensional hologram on a film substrate for collecting light over a range of incident angles and redirecting the light more nearly forward. Vertical and horizontal holograms can have varying gain across a... | 09/16/2003 |
| 6580469 | Projection device In a projection device with a matrix (50) located in an image plane for generating a video image, with optics (9) for projection of this video image on a screen and with a light source (3, 30) for illuminating the matrix (50), there is an arrangement by w... | 06/17/2003 |
| 6580471 | Projecting images An "extra-folded" projection display system includes a selectively reflective material (e.g., a linear reflecting polarizer) placed immediately behind the system's imaging screen. The display system includes an image projector that projects an image beam ... | 06/17/2003 |
| 6556256 | Projector and prism used therein A projector of the type which uses an optical modulator that modulates light by controlling the emitting direction of light applied to a light illumination surface in accordance with image information is provided with a reduction in size. In the projector... | 04/29/2003 |
| 6509937 | High performance projection television lens systems Projection lens systems for use in CRT projection televisions are provided. The lens systems include a negative lens unit (U4) which is associated with the CRT during use of the lens system and four lens elements (L1, L2, L3, CR) on the image side of the ... | 01/21/2003 |
| 6501517 | Optical system in projection television receiver An optical system in a projection television receiver includes: a screen for simultaneously displaying R (Red), G (Green) and B (Blue) images thereon; and a light source part comprising R, G and B cathode ray tubes. The R and B cathode ray tubes project t... | 12/31/2002 |
| 6491400 | Correcting for keystone distortion in a digital image displayed by a digital projector A method for correcting for keystone distortion and reducing aliasing defects in a digital image for use by a digital image projector, includes the steps of receiving an original digital image; lowpass filtering the original digital image to provide a low... | 12/10/2002 |
| 6437914 | Projection televisions with holographic screens having center to edge variations An East-West switching transistor is coupled between a flyback transformer primary winding and a horizontal deflection output transistor circuit to control retrace energy to obtain an East-West modulation of the deflection current amplitude as required fo... | 08/20/2002 |
| 6417967 | System and method for efficient illumination in color projection displays An illumination system for a color projection display. In one embodiment a broad spectrum light source illuminates a multilevel optical phase element which disperses the broad spectrum light from the light source by diffraction. A display having a number ... | 07/09/2002 |
