| Patent Number |
Title Of Patent |
Date Issued |
| 7611247 |
Illumination aperture for projection display |
November 3, 2009 |
| An optical system and method of increasing the contrast of a projected image. The optical system (1800) comprises a combination of aperture stops (1810, 1812) in at least one of the illumination and projection paths to filter scattered light and/or light prone to scatter into the pro |
| 7483216 |
Integrated TIR prism and lens element |
January 27, 2009 |
| An optical component includes a prism element adjacent to a lens element, where the two elements are separated by a small air gap. Elements of the optical component have adjacent and parallel surfaces which are substantially planar and which, with the small air gap, operate through T |
| 7394597 |
SLM projection display with series DMD illuminator |
July 1, 2008 |
| The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and saf |
| 7364326 |
Multiple light source illumination for image display systems |
April 29, 2008 |
| A method for transmitting light in an image display system includes generating a first cone of light from a first light source. The first cone of light includes a plurality of light beams. A first portion of the first cone is projected in an illumination path. A second portion of the |
| 7360902 |
System and method for light source modulation |
April 22, 2008 |
| In one embodiment, a method for modulating light in an image display system includes generating a plurality of light beams. The amount of light beams that are received by a modulator is selectively varied, and the modulated light beams are received at the modulator. |
| 7339719 |
Packaging of frequency-doubled, extended-cavity, surface-emitting laser components on a common s |
March 4, 2008 |
| In one embodiment, a laser module comprising an optical element, a frequency converter, a selective reflector, and one or more surface-emitters, each coupled to a common substrate, wherein the emitters, the optical element, the frequency converter, and the selective reflector are pos |
| 7330298 |
Optical system and method for increasing image resolution and/or dithering in projection applica |
February 12, 2008 |
| An optical system for projecting an image having x and y axes onto a image plane is provided. The system includes an SLM device spaced from the image plane, the SLM device having a plurality of pixels operable to project pixels of the image onto the image plane and positioned such that |
| 7324279 |
Dual modulator projection system |
January 29, 2008 |
| A three dimensional display system 100 using two spatial light modulators and a single projection path. Light source 102 emits a white light beam 104 which typically is focused onto an aperture of a recycling integrator 106. The light beam travels through the recycling integrator 106 and |
| 7252391 |
Method of producing an image |
August 7, 2007 |
| A method of producing an image comprising impinging a beam of light on first region of a dynamic filter. The dynamic filter comprising at least two regions having different light transmission characteristics. A first region of the dynamic filter transmits a first transmitted portion of t |
| 7232224 |
Simultaneous color illumination |
June 19, 2007 |
| According to one embodiment of the present invention, a method for color illumination for an image display system includes field sequentially operating an array of emitters to generate a sequence of light beams. Each light beam includes one color. A first light beam of a first color |
| 7230656 |
Sequential color filter |
June 12, 2007 |
| A sequential color filter and display system. The sequential color filter comprising: a set of at least three color filters (102). The color filters can be arranged in a cylindrical configuration and may have a cooling fan (506) attached. The set of color filters typically comprises |
| 7216990 |
Integrated lamp and aperture alignment method and system |
May 15, 2007 |
| According to one embodiment a method for aligning a light source includes providing a lamp and a lamp interface. The lamp interface has an alignment aperture disposed thereon. The method also includes aligning the lamp with respect to the lamp interface until a desired amount of ligh |
| 7207678 |
Prism for high contrast projection |
April 24, 2007 |
| Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device to separate unwanted off-state and/or flat-state light from the projection ON-light bundle. The TIR critical angle of these prisms is selected to affect either the off-state light or addit |
| 7194169 |
Notched adjustable aperture |
March 20, 2007 |
| An adjustable aperture system includes a stationary aperture operable to remove a portion of a lower intensity light communicated through a light bundle. The system also includes an adjustable aperture comprising a notch and capable of varying an amount of projection light communicated |
| 7182469 |
High contrast projection |
February 27, 2007 |
| A method and system for improving the contrast ratio of a projected image. An asymmetric aperture stop improves the contrast ratio of a projected image. Using slightly offset projection, the majority of the on-state projection light from the modulator array passes through a region that i |
| 7118226 |
Sequential color recapture for image display systems |
October 10, 2006 |
| A method for transmitting light in an image display system includes generating a beam of light from a light source. The beam of light is directed at a first segment of an electronically-switchable filter. A first portion of the beam of light is accepted by the first segment of the el |
| 7118225 |
Illumination system |
October 10, 2006 |
| The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and saf |
| 7066605 |
Color recapture for display systems |
June 27, 2006 |
| A sequential color display system using a white light source to create a full color image projected onto an image plane. A dynamic filter, typically a series of moving dichroic filters, generates a series of primary colored light beams that are swept across the surface of a spatial l |
| 6961194 |
Integrated TIR prism and lens element |
November 1, 2005 |
| Disclosed is an optical component, which comprises a prism element adjacent to a lens element, where the two elements are separated by a small air gap. In disclosed embodiments, the elements have adjacent and parallel surfaces which are substantially planar and which, with the small air |
| 6959990 |
Prism for high contrast projection |
November 1, 2005 |
| Prism elements having TIR surfaces placed in close proximity to the active area of a SLM device 302 to separate unwanted off-state 324 and/or flat-state 326 light from the projection ON-light bundle 322. The TIR critical angle of these prisms is selected to affect either the off-state |
| 6908197 |
Prism with angular filter |
June 21, 2005 |
| A TIR prism for use in projection displays, which enables angular separation of input illumination and projection light. By controlling the critical angle of a TIR surface, a portion of the illumination cone can be made to fail TIR, thereby being removed from the system prior to over |
| 6879451 |
Neutral density color filters |
April 12, 2005 |
| The present application describes embodiments of a neutral density color wheel filter. According to one embodiment, a neutral density color wheel (100) includes an opaque coating (135) over one or more color segments (120, 130, 140, 150, 160, 170) with randomly placed transmissive region |
| 6863401 |
Illumination system |
March 8, 2005 |
| The addition of DMD illumination modulator(s) 702 in series with projection SLM(s) 706/709 to produce high-performance projection displays with improved optical efficiency, reliability, and lower maintenance requirements. This approach eliminates the vibration, audible noise, and saf |
| 6857751 |
Adaptive illumination modulator |
February 22, 2005 |
| An image display system includes a light source capable of generating an illumination light beam along an illumination path. The system also includes a modulator operable to receive at least a portion of the illumination light beam and to selectively communicate at least some of the |
| 6856464 |
Color splitting apparatus and method with unequal glass path lengths |
February 15, 2005 |
| A three element prism system and method for splitting/combining three different colors of light arranged such that the size of a selected one of the color prism, such as for example, the red prism and, consequently the clear aperture, are increased without a corresponding increase in the |
| 6824275 |
Folded projection lens |
November 30, 2004 |
| A projection lens that uses a TIR surface as both an angular filter and fold mirror. A first lens element 602 is placed very close to the TIR prism assembly 604. Because the lens is so close, it gathers both off state and state light from the modulator. Off state light from the DMD f |
| 6771325 |
Color recapture for display systems |
August 3, 2004 |
| A sequential color display system using a white light source (202) to create a full color image projected onto an image plane (214). A dynamic filter (206), typically a series of moving dichroic filters, generates a series of primary colored light beams that are swept across the surface |
| 6637894 |
High contrast projection |
October 28, 2003 |
| A method and system for improving the contrast ratio of a projected image. An asymmetric aperture stop within a lens is used to provide a 20-30% improvement in the contrast ratio of a projected image when used with offset projection. Using slightly offset projection, the majority of the |
| 6469821 |
Micromirror structures for orthogonal illumination |
October 22, 2002 |
| A micromirror device having an array of mirrors 802 formed with a jagged leading 804 and trailing 806 edge. The jagged leading and trailing edges eliminate the features that cause the most diffraction-straight edges that are perpendicular to the incident illumination 808. The leading and |
| 6249387 |
Stable enhanced contrast optical system for high resolution displays |
June 19, 2001 |
| An optical system for illumination spatial light modulators. The optical system includes a tall color splitting prism (16) with substantially symmetrical face bonding areas, thereby eliminating the need for external holding plates. The face bonding areas (62) are outside the optically |
| 6175422 |
Method and apparatus for the computer-controlled manufacture of three-dimensional objects from c |
January 16, 2001 |
| A method and process for computer-controlled manufacture of three-dimensional objects involves dispensing a layer of a first material, such as a liquid, insoluble material onto a platform at predetermined locations corresponding to a cross-section of the object, which then hardens. A |
| 6169605 |
Method and apparatus for the computer-controlled manufacture of three-dimensional objects from c |
January 2, 2001 |
| A method and process for computer-controlled manufacture of three-dimensional objects involves dispensing a layer of a first material, such as a liquid, insoluble material onto a platform at predetermined locations corresponding to a cross-section of the object, which then hardens. A |
| 5594652 |
Method and apparatus for the computer-controlled manufacture of three-dimensional objects from c |
January 14, 1997 |
| An object produces from a computer data base by representing the object in the data base as a solid voxels surrounded by support voxels within a volume. The data base representation of the object as the solid voxels is converted to a data base representation of the object as a shell of s |
| 5593531 |
System, method and process for fabrication of 3-dimensional objects by a static electrostatic im |
January 14, 1997 |
| A prototype is fabricated from layers of a part and support. A first charging apparatus forms a first charged area to attract a first dry material, and a second charging apparatus from a second charged area to attract a second dry material. The first and second dry material is transf |
| 5260009 |
System, method, and process for making three-dimensional objects |
November 9, 1993 |
| A method and process for computer-controlled manufacture of three-dimensional objects involves dispensing a layer of liquid, insoluble material onto a platform at predetermined locations, which then hardens. A second media, preferably water soluble, is then sprayed onto this layer to |
| 4456268 |
Fastening means in sealed gasket assembly including shoulder bolt |
June 26, 1984 |
| A means maintaining compressive force in a seal assembly to assure seal reliability. The valve cover is fastened to the engine head with a shoulder bolt which carries Belleville washers compressively positioned between the bolt head and valve cover. The gasket load and deflection is |
