Patents by Inventor Shi Bei He

Shi Bei He 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).

  • Lighting device with omnidirectional light distribution
    Patent number: 8946978
    Abstract: A lighting device (2) comprises a light source (210) having a main forward emission direction (20), and an envelope (220) in which the light source (210) is arranged. The envelope (220) comprises an upper portion (225) having scattering properties and being arranged to reflect a part of the light from the light source (210) laterally and backwardly relative to the main forward emission direction (20) and transmit a part of the light from the light source (210). The light intensity distribution of the lighting device (2) is more uniform, as backward and lateral light intensity is increased while the light in the main forward emission direction (20) is still admitted.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: February 3, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Johannes Petrus Maria Ansems, Joris Hubertus Antonius Hagelaar, Peter Johannes Martinus Bukkems, Vincent Stefan David Gielen, Reinier Imre Anton Den Boer, Shi Bei He
  • Lighting device with omnidirectional light distribution
    Publication number: 20140252942
    Abstract: A lighting device (2) comprises a light source (210) having a main forward emission direction (20), and an envelope (220) in which the light source (210) is arranged. The envelope (220) comprises an upper portion (225) having scattering properties and being arranged to reflect a part of the light from the light source (210) laterally and backwardly relative to the main forward emission direction (20) and transmit a part of the light from the light source (210). The light intensity distribution of the lighting device (2) is more uniform, as backward and lateral light intensity is increased while the light in the main forward emission direction (20) is still admitted.
    Type: Application
    Filed: October 19, 2012
    Publication date: September 11, 2014
    Inventors: Johannes Petrus Maria Ansems, Joris Hubertus Antonius Hagelaar, Peter Johannes Martinus Bukkems, Vincent Stefan David Gielen, Reinier Imre Anton Den Boer, Shi Bei He