Register CIPO Patent
Document Number 02575918
Status In Force
Filing Date 2007-01-26
Open to Public Date 2007-07-26
Publication Date 2007-07-26
Grant Date 2014-05-20
  • Klipstein, Donald L.
  • Brass, Jack
  • Whitfield, Robert T.


An LED spotlight is made with at least one light emitting diode and a lens placed forward of the light emitting diode to collimate the light from the light emitting diode into a beam. The light emitting diode is preferably a type with a nominal power of at least 1 watt, requiring heatsinking, and having a nominal radiation pattern width of 100 degrees or more. The lens is preferably concavoconvex. The lens may have a thickness less than the distance between the rear surface of the lens and the light emitting diode. The LED spotlight may be mounted on headwear that would be worn on a person's head. The LED spotlight may be in the form of a flashlight. The LED spotlight may be in the form of an inspection lamp suitable for causing visible fluorescence of fluorescent materials, such as leaks of fluids that have suitable fluorescent dyes.

IPC Classes  ?

  • F21V 5/04 - Refractors for light sources of lens shape
  • F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
  • A61B 90/30 - Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
  • F21K 9/00 - Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
  • A61C 19/00 - Dental auxiliary appliances
  • F21L 4/00 - Electric lighting devices with self-contained electric batteries or cells
  • F21L 14/00 - Electric lighting devices without a self-contained power source, e.g. for mains connection
  • G02C 11/04 - Illuminating means
  • H05B 33/00 - Electroluminescent light sources