Patents by Inventor Robert Lamfers

Robert Lamfers 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).

  • Color measurement instrument
    Patent number: 7145657
    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: December 5, 2006
    Assignee: X-Rite, Incorporated
    Inventors: Steven H. Peterson, Robert A. Lamfers
  • Color measurement instrument
    Publication number: 20060152725
    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.
    Type: Application
    Filed: March 8, 2006
    Publication date: July 13, 2006
    Inventors: Steven Peterson, Robert Lamfers
  • Color measurement instrument
    Publication number: 20050062968
    Abstract: An LED-based color measurement instrument including an illumination system and a sensing system. The illumination system includes modulated LEDs and a temperature control system for regulating the temperature of the LEDs, thereby improving the consistency of their performance. The sensing system includes a photodiode, a transimpedance amplifier, and an integrator in the first stage to cancel the effect of ambient light on the output of the first stage. The sensing system also includes a lens system for imaging a target area of the target sample onto the photo sensor in a manner so that the product of the target area times the solid angle captured by the lens system is generally uniform over a selected range of distances, thereby reducing the positional sensitivity of the instrument with respect to the target sample.
    Type: Application
    Filed: September 23, 2003
    Publication date: March 24, 2005
    Inventors: Steven Peterson, Mark Cargill, Peter VanderJagt, Robert Lamfers
  • Color measurement instrument
    Patent number: D522893
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: June 13, 2006
    Assignee: X-Rite Incorporated
    Inventors: Mark D. Finney, Robert A. Lamfers, Steven M. Beukema
  • Color measurement instrument and base unit
    Patent number: D523766
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: June 27, 2006
    Assignee: X-Rite, Incorporated
    Inventors: Mark D. Finney, Robert A. Lamfers, Steven M. Beukema
  • Base unit for color measurement instrument
    Patent number: D523767
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: June 27, 2006
    Assignee: X-Rite, Incorporated
    Inventors: Mark D. Finney, Robert A. Lamfers, Steven M. Beukema