Patents by Inventor Vesa Peili

Vesa Peili 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).

  • Method and apparatus for self-monitoring of proximity sensors
    Patent number: 6835923
    Abstract: The present invention relates to proximity sensors. It also relates to proximity sensors in electronic devices using lightguides. More specifically the invention relates to a simple self monitoring of optical proximity sensors. This can be achieved according to one embodiment of the present invention by a system of lightguides for the use in proximity sensor. The lightguide system comprises a transceiver lightguide to direct-transmitter to a predefined direction, and a receiver lightguide to direct transmitter light reflected from an object towards a receiver, where the transceiver and receiver lightguides comprise diffracting surfaces to direct a part of-the light from the transmitter as a self monitoring beam in a direction towards a receiver.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 28, 2004
    Assignee: Nokia Corporation
    Inventors: Tiina Hämäläinen, Henri Vähä-Ypyä, Risto Pirhonen, Vesa Peili
  • Method and apparatus for self-monitoring of proximity sensors
    Publication number: 20030094566
    Abstract: The present invention relates to proximity sensors. It also relates to proximity sensors in electronic devices using lightguides. More specifically the invention relates to a simple self monitoring of optical proximity sensors. This can be achieved according to one embodiment of the present invention by a system of lightguides for the use in a proximity sensor. The lightguide system comprises a transceiver lightguide to direct transmitter to a predefined direction, and a receiver lightguide to direct transmitter light reflected from an object towards a receiver, where the transceiver and receiver lightguides comprise diffracting surfaces to direct a part of the light from the transmitter as a self monitoring beam in a direction towards a receiver.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 22, 2003
    Inventors: Tiina Hamalainen, Henri Vaha-Ypya, Risto Pirhonen, Vesa Peili