Patents by Inventor Curtis W. Stith

Curtis W. Stith 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: 8779483
    Abstract: Electronic devices may be provided with imaging modules that include plasmonic light collectors. Plasmonic light collectors may be configured to exploit an interaction between incoming light and plasmons in the plasmonic light collector to alter the path of the incoming light. Plasmonic light collectors may include one or more spectrally tuned plasmonic image pixels configured to preferentially trap light of a given frequency. Spectrally tuned plasmonic image pixels may include plasmonic structures formed form a patterned metal layer over doped silicon layers. Doped silicon layers may be interposed between plasmonic structures and a reflective layer. Plasmonic image pixels may be used to absorb and detect as much as, or more than, ninety percent of incident light at wavelengths ranging from the infrared to the ultraviolet. Plasmonic image pixels that capture light of different colors may be arranged in patterned arrays to form imager modules or imaging spectrometers for optofluidic microscopes.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: July 15, 2014
    Assignee: Aptina Imaging Corporation
    Inventors: Kenneth Edward Salsman, Ulrich Boettiger, Dmitry Bakin, Curtis W. Stith
  • Patent number: 8538120
    Abstract: An image sensor integrated circuit may contain image sensor pixels. A channel containing a fluid with particles such as cells may be formed on top of the image sensor. Some of the image sensor pixels may form a calibration sensor and some of the image sensor pixels may form an imager. As the fluid and particles flow through the channel at a flow rate, the calibration sensor may measures the flow rate and illumination intensity in the channel. Based on calibration data such as measured flow rate and measured illumination intensity, adjustments may be made to ensure that the imager acquires satisfactory image data. The adjustments may include flow rate adjustments, image acquisition data rate adjustments, and illumination adjustments. A processing unit in the channel may contain a laser or other component to destroy selected cells. A flared region in the channel may be used as a chromatograph.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: September 17, 2013
    Assignee: Aptina Imaging Corporation
    Inventors: Kenneth Edward Salsman, Ulrich Boettiger, Dmitry Bakin, Curtis W. Stith
  • Publication number: 20130070140
    Abstract: An electronic device may have a camera module. The camera module may include a camera sensor divided into two or more regions. The various regions of the camera sensor may include lenses that filter different polarizations of incident light. As one example, a first half of the camera sensor may include a lens that passes unpolarized light to the first half of the camera sensor, while a second half of the camera sensor may include a lens that passes light of a particular polarization to the second half of the camera sensor. If desired, the camera sensor may include microlenses over individual image sensing pixels. Some of the microlenses may select for particular polarizations of incident light. The electronic device may include a component that emits structured or polarized light and the camera sensor may have lenses that are mapped to the light emitted by the component.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 21, 2013
    Inventors: Robert Gove, Curtis W. Stith
  • Publication number: 20120326256
    Abstract: Electronic devices may be provided with imaging modules that include plasmonic light collectors. Plasmonic light collectors may be configured to exploit an interaction between incoming light and plasmons in the plasmonic light collector to alter the path of the incoming light. Plasmonic light collectors may include one or more spectrally tuned plasmonic image pixels configured to preferentially trap light of a given frequency. Spectrally tuned plasmonic image pixels may include plasmonic structures formed form a patterned metal layer over doped silicon layers. Doped silicon layers may be interposed between plasmonic structures and a reflective layer. Plasmonic image pixels may be used to absorb and detect as much as, or more than, ninety percent of incident light at wavelengths ranging from the infrared to the ultraviolet. Plasmonic image pixels that capture light of different colors may be arranged in patterned arrays to form imager modules or imaging spectrometers for optofluidic microscopes.
    Type: Application
    Filed: February 2, 2012
    Publication date: December 27, 2012
    Inventors: Kenneth Edward Salsman, Ulrich Boettiger, Dmitry Bakin, Curtis W. Stith
  • Publication number: 20120045786
    Abstract: An image sensor integrated circuit may contain image sensor pixels. Channels containing a fluid with cells or other material may be formed on top of the image sensor. The image sensor pixels may form imagers. Each imager may be located in a respective one of the channels. Reactant chambers may be used to expose the particles in the fluid to reactant. The imagers may gather images of the cells or other particles as the fluid passes over the imagers following exposure to the reactant. Spent sample chambers at the ends of the channels may be used to collect the fluid after the fluid has passed over the imagers. Image data from the imagers may be processed by control circuitry on the image sensor integrated circuit and external equipment.
    Type: Application
    Filed: May 24, 2011
    Publication date: February 23, 2012
    Inventor: Curtis W. Stith
  • Publication number: 20120044339
    Abstract: An image sensor integrated circuit may contain image sensor pixels. A channel containing a fluid with particles such as cells may be formed on top of the image sensor. The image sensor pixels may form light sensors and imagers. The imagers may gather images of the cells or other particles as the fluid passes over the imagers. The channel may have multiple branches. Gating structures and other fluid control structures may control the flow of fluid through the channel branches. Portions of the channel may be used to form chambers. The chambers may each be provided with one or more light sensors, light sources, and color filters to alter the color of illumination form a light source, one or more reactants such as dyes, antigens, and antibodies, and heaters. The branches may route the fluid to respective chambers each of which has a different set of capabilities.
    Type: Application
    Filed: May 24, 2011
    Publication date: February 23, 2012
    Inventors: Curtis W. Stith, Dmitry Bakin, Ulrich Boettiger, Kenneth Edward Salsman
  • Publication number: 20120045103
    Abstract: An image sensor integrated circuit may contain image sensor pixels. A channel containing a fluid with particles such as cells may be formed on top of the image sensor. Some of the image sensor pixels may form a calibration sensor and some of the image sensor pixels may form an imager. As the fluid and particles flow through the channel at a flow rate, the calibration sensor may measures the flow rate and illumination intensity in the channel. Based on calibration data such as measured flow rate and measured illumination intensity, adjustments may be made to ensure that the imager acquires satisfactory image data. The adjustments may include flow rate adjustments, image acquisition data rate adjustments, and illumination adjustments. A processing unit in the channel may contain a laser or other component to destroy selected cells. A flared region in the channel may be used as a chromatograph.
    Type: Application
    Filed: May 24, 2011
    Publication date: February 23, 2012
    Inventors: Kenneth Edward Salsman, Ulrich Boettiger, Dmitry Bakin, Curtis W. Stith
  • Publication number: 20120044341
    Abstract: An integrated circuit may contain image sensor pixels. Channels containing a fluid with samples such as cells may be formed on top of the image sensor. Control circuitry may be formed on the integrated circuit. The image sensor pixels may form light sensors and imagers. Portions of the channel may have multiple chambers such as fluorescence detection chambers. Gating structures and other fluid control structures may control the flow of fluid through the channels and chambers. Portions of the channel may be used to form chambers. The chambers may each be provided with one or more light sensors, light sources, and color filters to alter the color of illumination form a light source, one or more reactants such as dyes, antigens, and antibodies, and heaters. The control circuitry may be configured to control the imagers, the gating structures, the fluid control structures, the light source, the heaters, etc.
    Type: Application
    Filed: August 8, 2011
    Publication date: February 23, 2012
    Inventors: Curtis W. Stith, Kenneth Edward Salsman, Dmitry Bakin, Ulrich Boettiger