US Patent Application No: 2004/0150,991

Number of patents in Portfolio can not be more than 2000

Phosphor based light sources utilizing total internal reflection

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ALSO PUBLISHED AS: 7157839
ATTORNEY / AGENT: (SPONSORED)
 

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Abstract

A LED package including an LED that emits excitation light at an excitation light wavelength and a layer of phosphor material positioned to receive the excitation light and having a first index of refraction at the excitation light wavelength. The phosphor material emits visible light at a visible light wavelength when illuminated with the excitation light. An interference reflector is positioned adjacent to the layer of phosphor material and a TIR promoting layer is in contact with the layer of phosphor material. The TIR promoting layer has a second index of refraction at the excitation light wavelength that is less than the first index of refraction at the excitation light wavelength.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
3M INNOVATIVE PROPERTIES COMPANYST PAUL, MN7902

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ouderkirk, Andrew J - 70 769
Watson, James E - 12 241
Weber, Michael F - 46 499

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
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