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US 2009/0268461 A1Published application
Photon energy conversion structure
OwnerDavid G. Deak, Joseph Laminventors
Life of this patent
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Abstract
A photon energy conversion device uses at least one ultraviolet light emitting diode (UV-LED) with a wavelength shifting medium such as phosphor or quantum dots. The device can be used as a light source, and shaped like incandescent light bulbs, fluorescent tubes, circles or compact fluorescent bulbs.
Claims30
A light source comprising:
- a photon emission source in the wavelength range of ultraviolet to near ultraviolet (less than about 350 nm);
- and
- a wavelength shifting medium which receives emitted photons and emits lower frequency energy in the wavelength range of about 400-700 nm, and in a substantially uniform, unfocussed, omni directional radiation pattern.
A photon energy conversion device in the form of a first electrode layer being generally transmissive to photon energy, a second electrode layer, and a layer of photon energy conversion material in the form of quantum dots disposed between the first layer and second layer.
Dependencies are inferred from the claim text.