Patents Assigned to TLG plc
  • Method for automatic switching and control of lighting
    Patent number: 5498931
    Abstract: The invention relates to a method for automatic switching and control of lighting to a localized area, the switching of the lighting being dependent on the presence or absence of a person in that localized area and the control of the lighting intensity being dependent on the sensed background level of lighting in that localized area. The invention also relates to a lamp fitting and to an automatic control device for controlling the light output of a light source in a "self managed" and "self controlled" energy saving luminaire.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: March 12, 1996
    Assignee: TLG plc
    Inventor: Lou Bedocs