Patents by Inventor Basil S. Wilkinson

Basil S. Wilkinson 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
    Patent number: 4768133
    Abstract: A lighting device includes a light pipe and a tungsten halogen reflector lamp transmitting light beams parallel with the axis of the light pipe. This allows the use of a dichroic filter which provides for an increased transmission whereby low wattage lamps (36 w) can be used instead of the more usual 100 to 200 w light sources. A number of shaped prisms can be used as end arrangements whereby different effects are obtained, for example, bi-directional, omni-directional or angled beams can be provided.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: August 30, 1988
    Assignee: Thorn EMI plc
    Inventors: Ronald H. Simons, Basil S. Wilkinson, Ivor C. Henry
  • Lighting unit
    Patent number: 4355349
    Abstract: A lighting unit for a glide path lighting system comprises a light source, a lens, and a colored interference filter part way across the light path between the light source and the lens, arranged so as to produce a light beam having a white part, a colored part and a transition region. The filter is inclined at an angle of approximately 6.degree. to a plane normal to the optical axis of the unit.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: October 19, 1982
    Assignee: Thorn Emi Limited
    Inventors: Ronald H. Simons, Basil S. Wilkinson