Patents by Inventor Pasi Risto Olavi Saarikko

Pasi Risto Olavi Saarikko 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 for coupling light into a thin planar waveguide
    Patent number: 8155489
    Abstract: A light distributing device (100) comprises a thin planar waveguide (10) and a waveguiding ridge (20). An incoming light beam (B1) coupled into the ridge (20) forms a second light beam (B2) waveguided in the ridge (20). The ridge (20) and the planar waveguide (10) have a common portion (23) such that light is further coupled from the side of the ridge (20) into the planar waveguide (10) through said common portion (23). Thus, optical power of a broad incoming beam (B1) may be effectively coupled to a relatively thin planar waveguide (10). The planar waveguide (10) may further comprise diffractive out-coupling elements (30) to direct light towards a display (400).
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: April 10, 2012
    Assignee: Nokia Corporation
    Inventors: Pasi Risto Olavi Saarikko, Tapani Kalervo Levola, Pauli Laitinen
  • Method For Coupling Light Into A Thin Planar Waveguide
    Publication number: 20100220956
    Abstract: A light distributing device (100) comprises a thin planar waveguide (10) and a waveguiding ridge (20). An incoming light beam (B1) coupled into the ridge (20) forms a second light beam (B2) waveguided in the ridge (20). The ridge (20) and the planar waveguide (10) have a common portion (23) such that light is further coupled from the side of the ridge (20) into the planar waveguide (10) through said common portion (23). Thus, optical power of a broad incoming beam (B1) may be effectively coupled to a relatively thin planar waveguide (10). The planar waveguide (10) may further comprise diffractive out-coupling elements (30) to direct light towards a display (400).
    Type: Application
    Filed: November 2, 2006
    Publication date: September 2, 2010
    Applicant: NOKIA CORPORATION
    Inventors: Pasi Risto Olavi Saarikko, Tapani Kalervo Levola, Pauli Laitinen