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LIGHT EMITTING DEVICE AND LAMP-COVER STRUCTURE CONTAINING LUMINESCENT MATERIAL

  • US 20100232134A1
  • Filed: 08/03/2009
  • Published: 09/16/2010
  • Est. Priority Date: 03/10/2009
  • Status: Active Grant
First Claim
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1. A lamp cover structure, comprising:

  • a first lens cap providing the outer surface of said lamp cover structure and a cavity at the inner surface;

    a second lens cap providing the inner surface of said lamp cover structure; and

    a wavelength-conversion layer sandwiched between said first lens cap and said second lens cap, wherein the inner surface of said lamp cover structure has different curvatures or different normal vector planes thereon such that the light emitted from a point on the inner surface of said lamp cover structure is recaptured by said lamp cover structure at other points on the inner surface of said lamp cover structure.

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