Patents by Inventor Kannan Raj

Kannan Raj has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6326723
    Abstract: A display screen may be formed with a moth-eye like array of elements of sufficiently small size to reduce glare from ambient light while passing outbound image light substantially unaffected. The screen may be used in direct view and projection displays.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: December 4, 2001
    Assignee: Intel Corporation
    Inventors: Kannan Raj, Lawrence A. Booth, Jr.
  • Patent number: 6231194
    Abstract: A projection system includes a display panel, a light modulator and at least one light sensor. The display panel has an exterior surface that is adapted to receive a first light wave that is indicative of at least one command. An interior surface of the display panel is adapted to receive a second light wave to form an image on the display panel. The light modulator is adapted to produce the second light wave, and the light sensor(s) are adapted to furnish an electrical indication of the command(s) in response to the first light wave.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: May 15, 2001
    Assignee: Intel Corporation
    Inventors: Kannan Raj, Lawrence A. Booth, Jr.
  • Patent number: 6220710
    Abstract: A luminosity channel may be provided in an electro-optic projection display by beam splitting the incident light source into first and second polarization beams. One polarization beam may be used to illuminate the three modulators for the three primary color channels. The other beam may be utilized to illuminate a white light modulator which provides a luminosity channel. The two beams may be recombined to produce the final image. As a result, in some embodiments, higher resolution, or wider color gamut, and better image quality may be achieved without unduly effecting the light efficiency of the display.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: April 24, 2001
    Assignee: Intel Corporation
    Inventors: Kannan Raj, Ronald D. Smith
  • Patent number: 6215534
    Abstract: An electro-optical device may include two pairs of electrodes which apply electric fields oriented at an angle with respect to one another. In this way, a second electric field may be used to create an alignment effect in the electro-optic material which normally is achieved using specially prepared alignment structures. The need for the alignment structures may be reduced or eliminated. The second electric field may be applied, for example, using metallic standoffs which space a top plate from a lower substrate and define a region for the electro-optic material. In this way, in large arrays, the electric field may be applied from a plurality of points improving the uniformity of the applied electric field. In smaller arrays, the field may be applied, for example, using peripheral electrodes.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 10, 2001
    Assignee: Intel Corporation
    Inventors: Kannan Raj, Oleg Rashkovskiy, Anthony C. Miller
  • Patent number: 6208392
    Abstract: An electro-optical device may be defined using metallic standoffs between a top plate and a substrate, such as a silicon substrate in a liquid crystal on silicon (LCOS) technology. In one embodiment, the metallic standoffs may be formed from a metal layer, such as metal four layer, above the metal layer used to form the metal pixel mirrors. In this way, relatively constant and uniform cell thicknesses may be achieved without significantly increasing the processing overhead.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: March 27, 2001
    Assignee: Intel Corporation
    Inventors: Anthony C. Miller, Kannan Raj
  • Patent number: 6194704
    Abstract: An photosensitive device may be formed with a diffractive lens which offsets chromatic aberrations and dispersion caused by a refractive capture lens. The diffractive lens may be formed of a sol-gel material having a photoinitiator, or other materials including those that may be defined with low temperature techniques commonly used in connection with photoresist.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: February 27, 2001
    Assignee: Intel Corporation
    Inventors: Azar Assadi, Kannan Raj, Robert C. Sundahl
  • Patent number: 6175442
    Abstract: A spatial light modulator includes a plurality of spaced pixel elements. This gives rise to the possibility of reflections of light through inter-pixel gaps. These reflections may be reduced, improving the contrast, in some embodiments of the present invention, by providing a substrate beneath the pixel elements with a moth-eye like array of protrusions formed thereon. These protrusions tend to ameliorate the effects of inter-pixel light by causing multiple reflections which tend to dissipate such light.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: January 16, 2001
    Assignee: Intel Corporation
    Inventors: Lawrence A. Booth, Jr., Kannan Raj
  • Patent number: 6172799
    Abstract: A three channel acousto-optic modulator may be used to implement a projection display or a scanner. Each of three channels are deflected differently by the modulator. The channels may correspond to the primary color planes.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: January 9, 2001
    Assignee: Intel Corporation
    Inventor: Kannan Raj
  • Patent number: 6166369
    Abstract: A microcollector for photosensitive devices such as imaging arrays for digital cameras, scanners and other devices, may be formed on a semiconductor structure adjacent to a photosensitive element. The collector may include reflective surfaces arranged about the photosensitive element so as to reflect incident light towards the photosensitive element. The collector may be used in conjunction with a refractive/diffractive microlens to further focus light onto the photosensitive element. As a result, the fill factor of the photosensitive device may be improved, and the signal to noise ratio may also be enhanced.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: December 26, 2000
    Assignee: Intel Corporation
    Inventors: Azar Assadi, Kannan Raj
  • Patent number: 6153927
    Abstract: An integrated circuit die may have a processor and a spatial light modulator formed in the same die. An opening may be provided in an interposer to allow light to reach the spatial light modulator. A plurality of bump bonds may space the interposer from the die region including the processor. Thus, a display may be formed in an integrated fashion with a processor.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: November 28, 2000
    Assignee: Intel Corporation
    Inventors: Kannan Raj, Ronald D. Smith
  • Patent number: 6150653
    Abstract: An photosensitive device may be formed with a diffractive lens which offsets chromatic aberrations and dispersion caused by a refractive capture lens. The diffractive lens may be formed of a sol-gel material having a photoinitiator, or other materials including those that may be defined with low temperature techniques commonly used in connection with photoresist.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: November 21, 2000
    Assignee: Intel Corporation
    Inventors: Azar Assadi, Kannan Raj, Robert C. Sundahl
  • Patent number: 6108130
    Abstract: A stereoscopic image sensor may be formed of a single image sensor having a pair of fields formed therein. The fields may be closer to one another than are a pair of left and right image collectors. The close spacing may be achieved by using an image redirector to redirect image information from the spaced apart collectors to the less spaced apart fields on the image sensor. In some embodiments of the present invention, by using a single imaging sensor, a more compact structure may be achieved which may be of lower cost and may enjoy reduced processing complexity. In addition, because a single sensor is utilized, in some embodiments of the present invention, the left and right images may be captured essentially identically.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 22, 2000
    Assignee: Intel Corporation
    Inventor: Kannan Raj
  • Patent number: 6046859
    Abstract: A segmented aperture lens having multiple lens segments having predetermined patterns. Each lens segment may be a fresnel lens. The lens segments may be arranged in a two-dimensional array or a one-dimensional array.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: April 4, 2000
    Assignee: Intel Corporation
    Inventor: Kannan Raj