Patents Assigned to National Semiconductor Corporation, A Delaware Corporation
  • Publication number: 20080080811
    Abstract: A polymer waveguide assembly. The assembly includes a polymer waveguide have a plurality of waveguide cores and an associated plurality of lenses respectively. The assembly also includes a molded lens structure having a support region, a primary refractive surface and a secondary refractive lens. The polymer waveguide is positioned onto the support surface of the molded lens structure so that the waveguide lenses are in optical alignment with the primary refractive lens and the secondary refractive lens of the molded waveguide structure. The lenses of the polymer waveguide are capable of collimating in the X and Y directions respectively. The primary refractive lens and the secondary refractive lens are both capable of collimating light in the Z direction. With this arrangement, a substantial; portion of the light passing through the secondary lens toward the waveguide cores is within the acceptance angle of the plurality of waveguides lenses respectively.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 3, 2008
    Applicant: National Semiconductor Corporation, a Delaware Corporation
    Inventor: Peter Deane
  • Publication number: 20060002655
    Abstract: Flexible optical waveguide substrates that can be used with touch screen displays. The waveguide substrates include a flexible base material. A first optical layer having a first index of refraction value is formed on the flexible base material. A second optical layer is then formed on the first optical layer, the second optical layer being patterned to form a plurality of optical elements and waveguides respectively. The second optical layer also has a second index of refraction value higher than the first index of refraction value. Lastly, a third optical layer is formed on the second optical layer. The third optical layer has a third index of refraction value lower than the second index of refraction value. The high N second layer is therefore sandwiched between the lower N first and third layers, creating an internally reflective surface wherever the high N and low N materials are in contact. The base material and first, second and third optical layers thus form a flexible waveguide substrate.
    Type: Application
    Filed: August 20, 2004
    Publication date: January 5, 2006
    Applicant: National Semiconductor Corporation, A Delaware Corporation
    Inventor: Gerard Smits
  • Publication number: 20050271319
    Abstract: An apparatus and method for an inexpensive, simple to make, self-aligning molded waveguide made of an optically transparent material and that can be used to generate a grid or lamina of light for use with touch screen displays. The molded waveguide substrate includes a plurality of lenses and a plurality of waveguide grooves corresponding to the plurality of integral lenses respectively. After the substrate is molded, the grooves are filled with an optically transparent material to optically couple and align the plurality of lenses and the plurality of grooves respectively. In one application, the molded waveguide substrate is positioned adjacent a touch screen device. A light transmitter and an imaging device are optically coupled to the molded waveguide substrate, and a processing device is coupled to the imaging device.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 8, 2005
    Applicant: National Semiconductor Corporation, A Delaware Corporation
    Inventor: David Graham
  • Publication number: 20050157990
    Abstract: Techniques for manufacturing an optical transmission device in a manner so that the photonic device is protected from damage that can be caused by exposure to the environment and physical handling are described. The invention involves placing a lens or a lens array over a photonic device, either with or without the use of a receptacle device, such that the photonic device is contained within a sealed cavity. The invention has three main embodiments in which the photonic device can be hermetically sealed, quasi-hermetically sealed, or non-hermetically sealed. The optical transmission device can be configured to serve as an optical receiver, detector, or a transceiver device.
    Type: Application
    Filed: February 1, 2005
    Publication date: July 21, 2005
    Applicant: National Semiconductor Corporation, A Delaware Corporation
    Inventors: William Mazotti, Jia Liu, Luu Nguyen, Haryanto Chandra, Peter Deane, Todd Thyes, Brian Huss, John Rukavina, Glenn Woodhouse
  • Publication number: 20030165303
    Abstract: A high performance ceramic block for use with small-scale circuitry is described. The block can be used in an optical sub-assembly (OSA) suitable for optical interconnection with optical fibers and electrical interconnection with a chip sub-assembly (CSA) is formed. The block includes a first surface and a second surface and is formed using one of low temperature co-fired ceramic (LTCC) and high temperature co-fired ceramic (HTCC) techniques. Photonic devices are formed on the first surface of the ceramic block and electrical contacts are formed on a second surface of the block. The electrical contacts being suitable for electrical communication with a chip sub-assembly. Electrical connections are formed so that they pass internally through the ceramic block to electrically interconnect the photonic devices on the first face of the block with the electrical contacts on the second face of the block. Such a block can be advantageously used to form an optoelectronic module.
    Type: Application
    Filed: March 3, 2003
    Publication date: September 4, 2003
    Applicant: National Semiconductor Corporation, a Delaware Corporation
    Inventors: Neeraj Anil Pendse, Bruce Carlton Roberts, Jia Liu, Lionel Auzereau, Christopher Barratt