Patents by Inventor Florian Cosmin Sabou

Florian Cosmin Sabou 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).

  • Optical arrangement with a light transmitting layer arranged to cover a portion of light entry surface of light guide and to transmit light diffusively
    Patent number: 8770821
    Abstract: An optical arrangement comprising a light guide (101) having a light-entry portion (103) with a light-entry surface (105), a tapering portion (107) with a light reflecting surface, and a light-exit surface (109). The light-entry portion (103) is arranged to guide light from the light-entry surface (105) in a first direction (x) towards the light reflecting surface (H I), the light reflecting surface being arranged in relation to the first direction (x) so that incident light from the light-entry portion (103) is reflected towards the light-exit surface (109). A light transmitting layer (113) is adapted to transmit light diffusively and arranged to cover at least a portion of the light-entry edge surface (105) of the light guide (101). The arrangement is e.g. suitable for use in a LED based luminaire and allows for efficiency and forming of a light beam able to fulfill glare requirements. The arrangement may advantageously be used in a downlighting application.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: July 8, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Willem Lubertus Ijzerman, Michel Cornelis Josephus Marie Vissenberg, Leendert Van Der Tempel, Florian Cosmin Sabou
  • OPTICAL ARRANGEMENT
    Publication number: 20100053959
    Abstract: An optical arrangement comprising a light guide (101) having a light-entry portion (103) with a light-entry surface (105), a tapering portion (107) with a light reflecting surface, and a light-exit surface (109). The light-entry portion (103) is arranged to guide light from the light-entry surface (105) in a first direction (x) towards the light reflecting surface (H I), the light reflecting surface being arranged in relation to the first direction (x) so that incident light from the light-entry portion (103) is reflected towards the light-exit surface (109). A light transmitting layer (113) is adapted to transmit light diffusively and arranged to cover at least a portion of the light-entry edge surface (105) of the light guide (101). The arrangement is e.g. suitable for use in a LED based luminaire and allows for efficiency and forming of a light beam able to fulfill glare requirements. The arrangement may advantageously be used in a downlighting application.
    Type: Application
    Filed: April 10, 2008
    Publication date: March 4, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Willem Lubertus Ijzerman, Michel Cornelis Josephus Marie Vissenberg, Leendert Van Der Tempel, Florian Cosmin Sabou